951

INOCULATION AGAINST COLDS

" XBD=556 XHG=326 YBD=496 YHG=422>THE " XBD=1098 XHG=630 YBD=496 YHG=422>LANCET

" XBD=436 XHG=222 YBD=653 YHG=620>LONDON: " XBD=755 XHG=457 YBD=658 YHG=619>SATURDAY, " XBD=1009 XHG=777 YBD=652 YHG=619>OCTOBER " XBD=1090 XHG=1034 YBD=658 YHG=622>22, " XBD=1208 XHG=1117 YBD=651 YHG=621>1938

" XBD=607 XHG=208 YBD=880 YHG=843>WELL-CONTROLLED " XBD=757 XHG=655 YBD=877 YHG=845>tests " XBD=848 XHG=806 YBD=877 YHG=842>of " XBD=963 XHG=894 YBD=877 YHG=842>the " XBD=1177 XHG=1012 YBD=888 YHG=841>efficacy " XBD=1267 XHG=1225 YBD=878 YHG=843>of" XBD=325 XHG=168 YBD=931 YHG=895>vaccines " XBD=507 XHG=354 YBD=941 YHG=894>against " XBD=605 XHG=536 YBD=928 YHG=893>the " XBD=822 XHG=635 YBD=929 YHG=904>common " XBD=941 XHG=850 YBD=929 YHG=893>cold " XBD=1073 XHG=969 YBD=928 YHG=893>have " XBD=1268 XHG=1104 YBD=940 YHG=893>already" XBD=283 XHG=168 YBD=983 YHG=948>shown " XBD=389 XHG=302 YBD=980 YHG=945>that " XBD=512 XHG=409 YBD=982 YHG=944>their " XBD=650 XHG=534 YBD=980 YHG=944>value " XBD=705 XHG=671 YBD=982 YHG=945>is " XBD=773 XHG=729 YBD=980 YHG=947>at " XBD=884 XHG=795 YBD=980 YHG=945>best " XBD=1044 XHG=904 YBD=992 YHG=944>highly " XBD=1264 XHG=1065 YBD=992 YHG=945>question-" XBD=250 XHG=168 YBD=1034 YHG=997>able. " XBD=470 XHG=298 YBD=1032 YHG=996>Another " XBD=584 XHG=500 YBD=1031 YHG=996>nail " XBD=647 XHG=612 YBD=1033 YHG=997>is " XBD=822 XHG=680 YBD=1032 YHG=997>driven " XBD=938 XHG=851 YBD=1032 YHG=997>into " XBD=1040 XHG=970 YBD=1032 YHG=996>the " XBD=1191 XHG=1073 YBD=1032 YHG=995>coffin " XBD=1265 XHG=1223 YBD=1032 YHG=996>of" XBD=252 XHG=167 YBD=1086 YHG=1049>their " XBD=499 XHG=278 YBD=1094 YHG=1048>reputation " XBD=586 XHG=530 YBD=1094 YHG=1046>by " XBD=669 XHG=616 YBD=1083 YHG=1059>an " XBD=918 XHG=699 YBD=1084 YHG=1047>admirable " XBD=1085 XHG=950 YBD=1093 YHG=1047>study, " XBD=1265 XHG=1117 YBD=1094 YHG=1047>lasting" XBD=255 XHG=167 YBD=1137 YHG=1112>more " XBD=364 XHG=271 YBD=1134 YHG=1099>than " XBD=488 XHG=379 YBD=1134 YHG=1099>three " XBD=634 XHG=506 YBD=1145 YHG=1111>years, " XBD=840 XHG=653 YBD=1147 YHG=1099>reported " XBD=913 XHG=858 YBD=1146 YHG=1099>by |>" XBD=1080 XHG=929 YBD=1142 YHG=1099>DIEHL, " XBD=1262 XHG=1100 YBD=1142 YHG=1099>BAKER," XBD=231 XHG=166 YBD=1188 YHG=1151>and " XBD=391 XHG=249 YBD=1187 YHG=1150>CowAN " XBD=452 XHG=410 YBD=1186 YHG=1150>of " XBD=539 XHG=470 YBD=1186 YHG=1150>the " XBD=759 XHG=559 YBD=1186 YHG=1150>students’ " XBD=913 XHG=774 YBD=1186 YHG=1150>health " XBD=1075 XHG=926 YBD=1186 YHG=1151>service " XBD=1175 XHG=1095 YBD=1186 YHG=1150>and " XBD=1262 XHG=1193 YBD=1186 YHG=1150>the" XBD=389 XHG=166 YBD=1250 YHG=1204>department " XBD=467 XHG=426 YBD=1237 YHG=1201>of " XBD=736 XHG=503 YBD=1249 YHG=1203>preventive " XBD=970 XHG=775 YBD=1238 YHG=1202>medicine " XBD=1089 XHG=1009 YBD=1237 YHG=1202>and " XBD=1262 XHG=1127 YBD=1249 YHG=1202>public" XBD=279 XHG=165 YBD=1290 YHG=1253>health " XBD=351 XHG=313 YBD=1288 YHG=1252>of " XBD=452 XHG=384 YBD=1288 YHG=1252>the " XBD=725 XHG=489 YBD=1300 YHG=1253>University " XBD=803 XHG=761 YBD=1289 YHG=1253>of Minnesota. " XBD=1263 XHG=1144 YBD=1289 YHG=1253>Their" XBD=314 XHG=165 YBD=1351 YHG=1305>subjects " XBD=436 XHG=340 YBD=1339 YHG=1316>were " XBD=518 XHG=465 YBD=1339 YHG=1304>all " XBD=728 XHG=543 YBD=1340 YHG=1304>students " XBD=799 XHG=757 YBD=1340 YHG=1305>of " XBD=893 XHG=825 YBD=1341 YHG=1304>the " XBD=1146 XHG=921 YBD=1351 YHG=1305>university " XBD=1260 XHG=1172 YBD=1340 YHG=1305>who" XBD=389 XHG=165 YBD=1392 YHG=1355>volunteered " XBD=459 XHG=416 YBD=1391 YHG=1358>to " XBD=728 XHG=488 YBD=1403 YHG=1356>participate " XBD=925 XHG=758 YBD=1392 YHG=1356>because " XBD=1053 XHG=954 YBD=1403 YHG=1356>they " XBD=1261 XHG=1082 YBD=1392 YHG=1355>believed" XBD=369 XHG=164 YBD=1444 YHG=1406>themselves " XBD=433 XHG=391 YBD=1442 YHG=1409>to " XBD=504 XHG=457 YBD=1443 YHG=1407>be " XBD=789 XHG=527 YBD=1455 YHG=1407>particularly " XBD=1048 XHG=809 YBD=1456 YHG=1407>susceptible " XBD=1115 XHG=1071 YBD=1444 YHG=1410>to " XBD=1259 XHG=1138 YBD=1445 YHG=1407>colds." XBD=216 XHG=167 YBD=1506 YHG=1461>By " XBD=396 XHG=242 YBD=1494 YHG=1459>random " XBD=676 XHG=429 YBD=1506 YHG=1459>assignment " XBD=808 XHG=709 YBD=1506 YHG=1460>they " XBD=941 XHG=841 YBD=1495 YHG=1472>were " XBD=1140 XHG=975 YBD=1496 YHG=1459>divided " XBD=1259 XHG=1173 YBD=1495 YHG=1460>into" XBD=260 XHG=165 YBD=1558 YHG=1510>equal " XBD=418 XHG=282 YBD=1557 YHG=1522>groups " XBD=527 XHG=447 YBD=1546 YHG=1510>and " XBD=665 XHG=553 YBD=1546 YHG=1511>three " XBD=961 XHG=692 YBD=1558 YHG=1511>experiments " XBD=1089 XHG=989 YBD=1546 YHG=1523>were " XBD=1258 XHG=1117 YBD=1547 YHG=1511>under-" XBD=273 XHG=165 YBD=1598 YHG=1562>taken.

" XBD=244 XHG=203 YBD=1649 YHG=1614>In " XBD=334 XHG=272 YBD=1649 YHG=1613>the " XBD=453 XHG=366 YBD=1649 YHG=1612>first " XBD=528 XHG=486 YBD=1649 YHG=1613>of " XBD=672 XHG=560 YBD=1649 YHG=1613>these " XBD=775 XHG=707 YBD=1649 YHG=1613>the " XBD=1100 XHG=810 YBD=1661 YHG=1613>experimental " XBD=1258 XHG=1132 YBD=1661 YHG=1626>group" XBD=313 XHG=167 YBD=1701 YHG=1664>received " XBD=644 XHG=352 YBD=1701 YHG=1664>subcutaneous " XBD=898 XHG=687 YBD=1712 YHG=1665>injections " XBD=983 XHG=942 YBD=1700 YHG=1665>of " XBD=1051 XHG=1026 YBD=1700 YHG=1677>a " XBD=1257 XHG=1093 YBD=1714 YHG=1666>vaccine" XBD=358 XHG=167 YBD=1762 YHG=1716>containing " XBD=669 XHG=377 YBD=1763 YHG=1716>pneumococci, " XBD=966 XHG=689 YBD=1763 YHG=1717>streptococci, |>" XBD=1260 XHG=987 YBD=1764 YHG=1716>Haemophilus|>|>|>" XBD=332 XHG=169 YBD=1814 YHG=1768>influenzae " XBD=542 XHG=341 YBD=1814 YHG=1767>(Pfeiffer’s " XBD=1009 XHG=550 YBD=1814 YHG=1767>bacillus), Micrococcus " XBD=1256 XHG=1019 YBD=1811 YHG=1768>catarrhalis," XBD=229 XHG=172 YBD=1855 YHG=1820>and " XBD=539 XHG=247 YBD=1866 YHG=1819>staphylococci, " XBD=633 XHG=564 YBD=1855 YHG=1819>the " XBD=877 XHG=659 YBD=1866 YHG=1820>organisms " XBD=1020 XHG=903 YBD=1867 YHG=1819>being " XBD=1256 XHG=1043 YBD=1867 YHG=1819>destroyed" XBD=415 XHG=174 YBD=1917 YHG=1870>mechanically " XBD=602 XHG=443 YBD=1907 YHG=1871>instead " XBD=675 XHG=633 YBD=1906 YHG=1871>of " XBD=762 XHG=707 YBD=1917 YHG=1871>by " XBD=898 XHG=792 YBD=1907 YHG=1870>heat. " XBD=993 XHG=952 YBD=1907 YHG=1871>It " XBD=1105 XHG=1024 YBD=1907 YHG=1883>was " XBD=1256 XHG=1136 YBD=1919 YHG=1872>given" XBD=207 XHG=177 YBD=1957 YHG=1923>in " XBD=305 XHG=221 YBD=1958 YHG=1922>doses " XBD=365 XHG=325 YBD=1958 YHG=1922>of |>" XBD=446 XHG=383 YBD=1958 YHG=1923>0-5 " XBD=579 XHG=465 YBD=1959 YHG=1934>c.cm. " XBD=717 XHG=601 YBD=1958 YHG=1923>twice " XBD=762 XHG=738 YBD=1958 YHG=1934>a " XBD=891 XHG=781 YBD=1958 YHG=1922>week " XBD=972 XHG=909 YBD=1958 YHG=1922>for " XBD=1103 XHG=990 YBD=1958 YHG=1922>three " XBD=1253 XHG=1123 YBD=1958 YHG=1923>weeks

" XBD=235 XHG=178 YBD=2009 YHG=1974>and " XBD=330 XHG=252 YBD=2010 YHG=1973>then " XBD=393 XHG=353 YBD=2009 YHG=1974>of |>" XBD=479 XHG=415 YBD=2011 YHG=1975>0-5 " XBD=615 XHG=502 YBD=2010 YHG=1985>c.cm. " XBD=763 XHG=641 YBD=2021 YHG=1985>every " XBD=983 XHG=786 YBD=2021 YHG=1973>fortnight " XBD=1254 XHG=1006 YBD=2021 YHG=1973>throughout" XBD=224 XHG=175 YBD=2060 YHG=2024>the " XBD=415 XHG=251 YBD=2069 YHG=2029>autumn, " XBD=608 XHG=456 YBD=2069 YHG=2026>winter, " XBD=731 XHG=651 YBD=2061 YHG=2025>and " XBD=917 XHG=770 YBD=2073 YHG=2026>spring. " XBD=1053 XHG=970 YBD=2061 YHG=2025>The " XBD=1250 XHG=1094 YBD=2061 YHG=2026>control" XBD=262 XHG=171 YBD=2124 YHG=2087>group " XBD=450 XHG=278 YBD=2113 YHG=2077>received " XBD=680 XHG=469 YBD=2124 YHG=2077>injections " XBD=744 XHG=703 YBD=2112 YHG=2076>of " XBD=920 XHG=764 YBD=2112 YHG=2076>normal " XBD=1064 XHG=939 YBD=2112 YHG=2076>saline " XBD=1252 XHG=1085 YBD=2112 YHG=2077>admini-" XBD=266 XHG=168 YBD=2163 YHG=2128>stered " XBD=320 XHG=282 YBD=2164 YHG=2129>in " XBD=404 XHG=337 YBD=2164 YHG=2128>the " XBD=529 XHG=422 YBD=2164 YHG=2140>same " XBD=650 XHG=548 YBD=2175 YHG=2140>way, " XBD=713 XHG=670 YBD=2163 YHG=2130>at " XBD=800 XHG=731 YBD=2164 YHG=2128>the " XBD=927 XHG=818 YBD=2164 YHG=2139>same " XBD=1153 XHG=947 YBD=2172 YHG=2128>intervals, " XBD=1253 XHG=1172 YBD=2164 YHG=2129>and" XBD=372 XHG=167 YBD=2226 YHG=2178>throughout " XBD=460 XHG=392 YBD=2215 YHG=2179>the " XBD=590 XHG=480 YBD=2215 YHG=2191>same " XBD=775 XHG=611 YBD=2227 YHG=2179>period ; " XBD=910 XHG=811 YBD=2226 YHG=2179>they " XBD=1029 XHG=930 YBD=2214 YHG=2191>were " XBD=1105 XHG=1052 YBD=2215 YHG=2179>all " XBD=1253 XHG=1125 YBD=2215 YHG=2179>under" XBD=214 XHG=166 YBD=2265 YHG=2230>the " XBD=447 XHG=231 YBD=2278 YHG=2231>impression " XBD=560 XHG=468 YBD=2266 YHG=2231>that " XBD=681 XHG=581 YBD=2277 YHG=2231>they " XBD=801 XHG=701 YBD=2266 YHG=2242>were " XBD=972 XHG=824 YBD=2277 YHG=2230>having " XBD=1063 XHG=994 YBD=2266 YHG=2230>the " XBD=1250 XHG=1087 YBD=2266 YHG=2231>vaccine" XBD=224 XHG=167 YBD=2317 YHG=2282>and " XBD=338 XHG=248 YBD=2318 YHG=2294>even " XBD=434 XHG=367 YBD=2317 YHG=2282>the " XBD=695 XHG=465 YBD=2329 YHG=2282>physicians " XBD=816 XHG=728 YBD=2317 YHG=2281>who " XBD=931 XHG=848 YBD=2317 YHG=2293>saw " XBD=1072 XHG=960 YBD=2317 YHG=2281>them " XBD=1149 XHG=1104 YBD=2317 YHG=2284>at " XBD=1249 XHG=1179 YBD=2317 YHG=2282>the" XBD=268 XHG=167 YBD=2368 YHG=2331>health " XBD=414 XHG=289 YBD=2369 YHG=2337>centre " XBD=552 XHG=438 YBD=2369 YHG=2333>when " XBD=673 XHG=574 YBD=2379 YHG=2333>they " XBD=929 XHG=694 YBD=2368 YHG=2332>contracted " XBD=1060 XHG=951 YBD=2368 YHG=2332>colds " XBD=1154 XHG=1084 YBD=2369 YHG=2333>did " XBD=1250 XHG=1177 YBD=2368 YHG=2336>not" XBD=252 XHG=166 YBD=2421 YHG=2382>know " XBD=400 XHG=278 YBD=2421 YHG=2384>which " XBD=555 XHG=430 YBD=2432 YHG=2396>group " XBD=686 XHG=587 YBD=2431 YHG=2384>they " XBD=828 XHG=717 YBD=2419 YHG=2396>came " XBD=975 XHG=860 YBD=2420 YHG=2383>from. " XBD=1184 XHG=1030 YBD=2431 YHG=2383>Clearly " XBD=1249 XHG=1215 YBD=2420 YHG=2385>it" XBD=263 XHG=164 YBD=2472 YHG=2436>would " XBD=332 XHG=289 YBD=2472 YHG=2436>be " XBD=458 XHG=359 YBD=2472 YHG=2436>hard " XBD=528 XHG=485 YBD=2472 YHG=2439>to " XBD=692 XHG=557 YBD=2472 YHG=2436>devise " XBD=746 XHG=722 YBD=2471 YHG=2448>a " XBD=906 XHG=775 YBD=2472 YHG=2436>better " XBD=1039 XHG=934 YBD=2479 YHG=2435>trial, " XBD=1150 XHG=1069 YBD=2471 YHG=2435>and " XBD=1247 XHG=1177 YBD=2471 YHG=2435>the" XBD=293 XHG=163 YBD=2523 YHG=2488>authors " XBD=389 XHG=314 YBD=2523 YHG=2487>will " XBD=458 XHG=411 YBD=2523 YHG=2487>be " XBD=784 XHG=481 YBD=2534 YHG=2487>congratulated " XBD=880 XHG=810 YBD=2534 YHG=2487>(by " XBD=956 XHG=902 YBD=2522 YHG=2486>all " XBD=1122 XHG=976 YBD=2534 YHG=2490>except " XBD=1250 XHG=1145 YBD=2522 YHG=2487>their" XBD=305 XHG=162 YBD=2585 YHG=2539>victims) " XBD=374 XHG=325 YBD=2574 YHG=2551>on " XBD=443 XHG=392 YBD=2574 YHG=2539>its " XBD=764 XHG=464 YBD=2585 YHG=2538>thoroughness." XBD=264 XHG=197 YBD=2626 YHG=2590>The " XBD=464 XHG=289 YBD=2626 YHG=2590>students " XBD=592 XHG=492 YBD=2625 YHG=2601>were " XBD=843 XHG=620 YBD=2625 YHG=2589>instructed " XBD=914 XHG=871 YBD=2624 YHG=2591>to " XBD=1078 XHG=942 YBD=2636 YHG=2591>report " XBD=1149 XHG=1105 YBD=2624 YHG=2591>to " XBD=1246 XHG=1177 YBD=2624 YHG=2588>the" XBD=266 XHG=159 YBD=2676 YHG=2639>health " XBD=421 XHG=282 YBD=2676 YHG=2641>service " XBD=646 XHG=440 YBD=2676 YHG=2640>whenever " XBD=688 XHG=665 YBD=2676 YHG=2652>a " XBD=796 XHG=706 YBD=2676 YHG=2640>cold " XBD=967 XHG=813 YBD=2676 YHG=2640>started " XBD=1065 XHG=985 YBD=2676 YHG=2640>and " XBD=1126 XHG=1083 YBD=2675 YHG=2642>to " XBD=1246 XHG=1145 YBD=2687 YHG=2639>keep" XBD=176 XHG=159 YBD=2726 YHG=2703>a " XBD=307 XHG=189 YBD=2728 YHG=2692>record " XBD=362 XHG=323 YBD=2727 YHG=2692>of " XBD=475 XHG=378 YBD=2727 YHG=2692>each " XBD=583 XHG=492 YBD=2727 YHG=2691>cold " XBD=643 XHG=601 YBD=2727 YHG=2691>of " XBD=768 XHG=660 YBD=2727 YHG=2703>more " XBD=888 XHG=787 YBD=2727 YHG=2691>than " XBD=955 XHG=905 YBD=2727 YHG=2692>24 " XBD=1106 XHG=971 YBD=2727 YHG=2691>hours’ " XBD=1242 XHG=1124 YBD=2726 YHG=2691>dura-" XBD=234 XHG=158 YBD=2779 YHG=2745>tion. " XBD=354 XHG=279 YBD=2778 YHG=2742>The " XBD=595 XHG=371 YBD=2778 YHG=2742>inoculated " XBD=736 XHG=611 YBD=2789 YHG=2755>group " XBD=844 XHG=757 YBD=2789 YHG=2743>(272 " XBD=1041 XHG=862 YBD=2789 YHG=2742>persons) " XBD=1245 XHG=1060 YBD=2789 YHG=2742>reported" XBD=237 XHG=156 YBD=2829 YHG=2793>from " XBD=424 XHG=258 YBD=2839 YHG=2805>memory " XBD=500 XHG=448 YBD=2829 YHG=2806>an " XBD=690 XHG=524 YBD=2840 YHG=2805>average " XBD=758 XHG=717 YBD=2829 YHG=2793>of |>" XBD=846 XHG=784 YBD=2830 YHG=2795>5-9 " XBD=979 XHG=871 YBD=2829 YHG=2793>colds " XBD=1076 XHG=1005 YBD=2840 YHG=2805>per " XBD=1244 XHG=1099 YBD=2840 YHG=2805>person" XBD=271 XHG=157 YBD=2891 YHG=2845>during " XBD=350 XHG=287 YBD=2879 YHG=2844>the " XBD=549 XHG=369 YBD=2891 YHG=2845>previous " XBD=676 XHG=570 YBD=2890 YHG=2856>year, " XBD=777 XHG=697 YBD=2880 YHG=2845>and " XBD=940 XHG=796 YBD=2891 YHG=2844>during " XBD=1027 XHG=958 YBD=2879 YHG=2844>the " XBD=1183 XHG=1045 YBD=2890 YHG=2844>period " XBD=1245 XHG=1203 YBD=2879 YHG=2844>of" XBD=376 XHG=157 YBD=2931 YHG=2895>observation " XBD=504 XHG=402 YBD=2930 YHG=2894>their " XBD=670 XHG=531 YBD=2941 YHG=2895>yearly " XBD=864 XHG=698 YBD=2941 YHG=2905>average " XBD=975 XHG=893 YBD=2930 YHG=2907>was " XBD=1100 XHG=1006 YBD=2941 YHG=2895>only " XBD=1244 XHG=1132 YBD=2930 YHG=2896>1-6-" XBD=174 XHG=157 YBD=2980 YHG=2957>a " XBD=376 XHG=190 YBD=2982 YHG=2946>reduction " XBD=438 XHG=397 YBD=2981 YHG=2945>of " XBD=508 XHG=462 YBD=2981 YHG=2946>73 " XBD=602 XHG=531 YBD=2992 YHG=2957>per " XBD=728 XHG=624 YBD=2981 YHG=2949>cent. " XBD=876 XHG=781 YBD=2981 YHG=2945>This " XBD=1013 XHG=899 YBD=2981 YHG=2945>looks " XBD=1136 XHG=1037 YBD=2992 YHG=2958>very " XBD=1245 XHG=1157 YBD=2981 YHG=2945>well" XBD=239 XHG=157 YBD=3032 YHG=2996>until " XBD=303 XHG=252 YBD=3031 YHG=3007>we " XBD=407 XHG=319 YBD=3031 YHG=2998>turn " XBD=465 XHG=423 YBD=3031 YHG=2999>to " XBD=549 XHG=482 YBD=3031 YHG=2996>the " XBD=723 XHG=568 YBD=3032 YHG=2996>control " XBD=864 XHG=738 YBD=3043 YHG=3008>group " XBD=961 XHG=882 YBD=3032 YHG=2996>and " XBD=1061 XHG=978 YBD=3031 YHG=2995>find " XBD=1171 XHG=1078 YBD=3032 YHG=2997>that " XBD=1241 XHG=1186 YBD=3031 YHG=2997>its" XBD=212 XHG=158 YBD=3082 YHG=3046>276 " XBD=406 XHG=229 YBD=3081 YHG=3046>members " XBD=608 XHG=425 YBD=3093 YHG=3046>reported |>|>" XBD=690 XHG=628 YBD=3082 YHG=3048>5-6 " XBD=819 XHG=710 YBD=3082 YHG=3046>colds " XBD=909 XHG=839 YBD=3093 YHG=3059>per " XBD=1072 XHG=927 YBD=3093 YHG=3059>person " XBD=1154 XHG=1090 YBD=3082 YHG=3047>for " XBD=1240 XHG=1172 YBD=3082 YHG=3047>the" XBD=230 XHG=158 YBD=3139 YHG=3106>year " XBD=378 XHG=256 YBD=3131 YHG=3096>before " XBD=475 XHG=408 YBD=3132 YHG=3097>the " XBD=630 XHG=507 YBD=3143 YHG=3097>study " XBD=741 XHG=661 YBD=3133 YHG=3098>and " XBD=869 XHG=773 YBD=3143 YHG=3098>only " XBD=959 XHG=899 YBD=3133 YHG=3098>2-1 " XBD=1139 XHG=994 YBD=3143 YHG=3098>during " XBD=1238 XHG=1169 YBD=3133 YHG=3098>the|>" XBD=320 XHG=156 YBD=3193 YHG=3148>study-a " XBD=540 XHG=338 YBD=3182 YHG=3147>reduction " XBD=602 XHG=560 YBD=3182 YHG=3147>of " XBD=671 XHG=623 YBD=3183 YHG=3148>63 " XBD=762 XHG=691 YBD=3195 YHG=3160>per " XBD=900 XHG=782 YBD=3192 YHG=3151>cent., " XBD=1054 XHG=921 YBD=3185 YHG=3148>which " XBD=1106 XHG=1073 YBD=3184 YHG=3149>is " XBD=1239 XHG=1129 YBD=3195 YHG=3149>quite" XBD=187 XHG=156 YBD=3233 YHG=3208>as " XBD=294 XHG=204 YBD=3243 YHG=3199>large " XBD=337 XHG=316 YBD=3232 YHG=3209>a " XBD=559 XHG=357 YBD=3233 YHG=3198>reduction " XBD=624 XHG=581 YBD=3233 YHG=3211>as " XBD=719 XHG=647 YBD=3234 YHG=3198>has " XBD=842 XHG=743 YBD=3234 YHG=3199>been " XBD=1047 XHG=862 YBD=3246 YHG=3199>reported " XBD=1110 XHG=1067 YBD=3234 YHG=3200>in " XBD=1238 XHG=1130 YBD=3235 YHG=3212>some" XBD=391 XHG=155 YBD=3283 YHG=3248>uncontrolled " XBD=748 XHG=433 YBD=3294 YHG=3249>investigations. " XBD=882 XHG=800 YBD=3285 YHG=3249>The " XBD=1055 XHG=928 YBD=3284 YHG=3250>moral " XBD=1142 XHG=1098 YBD=3284 YHG=3252>to " XBD=1238 XHG=1189 YBD=3285 YHG=3250>be" XBD=263 XHG=155 YBD=3333 YHG=3297>drawn " XBD=369 XHG=285 YBD=3332 YHG=3297>here " XBD=425 XHG=393 YBD=3333 YHG=3299>is " XBD=542 XHG=452 YBD=3334 YHG=3298>that " XBD=725 XHG=568 YBD=3335 YHG=3300>records " XBD=795 XHG=753 YBD=3334 YHG=3299>of " XBD=913 XHG=820 YBD=3345 YHG=3303>past " XBD=1145 XHG=939 YBD=3335 YHG=3300>incidence " XBD=1239 XHG=1173 YBD=3335 YHG=3312>are" XBD=209 XHG=155 YBD=3383 YHG=3351>not " XBD=271 XHG=235 YBD=3383 YHG=3352>to " XBD=344 XHG=301 YBD=3383 YHG=3348>be " XBD=491 XHG=374 YBD=3384 YHG=3348>relied " XBD=630 XHG=521 YBD=3395 YHG=3361>upon " XBD=742 XHG=662 YBD=3384 YHG=3349>and " XBD=865 XHG=772 YBD=3384 YHG=3349>that " XBD=964 XHG=895 YBD=3385 YHG=3350>the " XBD=1239 XHG=997 YBD=3386 YHG=3354>assessment" XBD=240 XHG=155 YBD=3433 YHG=3402>must " XBD=335 XHG=262 YBD=3433 YHG=3402>rest " XBD=522 XHG=360 YBD=3445 YHG=3399>entirely " XBD=600 XHG=548 YBD=3434 YHG=3411>on " XBD=695 XHG=626 YBD=3434 YHG=3400>the " XBD=888 XHG=723 YBD=3434 YHG=3400>relative " XBD=1168 XHG=915 YBD=3446 YHG=3401>experiences " XBD=1238 XHG=1196 YBD=3436 YHG=3402>of" XBD=206 XHG=154 YBD=3482 YHG=3447>the " XBD=291 XHG=224 YBD=3483 YHG=3452>two " XBD=446 XHG=310 YBD=3495 YHG=3461>groups " XBD=505 XHG=464 YBD=3484 YHG=3450>in " XBD=592 XHG=524 YBD=3484 YHG=3449>the " XBD=728 XHG=612 YBD=3495 YHG=3462>years " XBD=791 XHG=749 YBD=3484 YHG=3449>of " XBD=1076 XHG=809 YBD=3487 YHG=3449>observation. " XBD=1237 XHG=1131 YBD=3487 YHG=3451>Such

1 Diehl, H. S., Baker, A. B., and Cowan, D. W., J. Amer.med. Ass. Sept. 24th, 1938, p. 1168.

" XBD=1583 XHG=1330 YBD=313 YHG=267>comparison " XBD=1732 XHG=1603 YBD=302 YHG=266>shows " XBD=1779 XHG=1755 YBD=301 YHG=278>a " XBD=1934 XHG=1800 YBD=301 YHG=266>rather " XBD=2073 XHG=1954 YBD=301 YHG=266>lower " XBD=2295 XHG=2092 YBD=302 YHG=266>incidence " XBD=2370 XHG=2318 YBD=301 YHG=278>on " XBD=2459 XHG=2391 YBD=301 YHG=265>the" XBD=1558 XHG=1330 YBD=354 YHG=317>inoculated " XBD=1657 XHG=1580 YBD=365 YHG=318>(1.6 " XBD=1720 XHG=1676 YBD=353 YHG=320>to " XBD=1801 XHG=1740 YBD=353 YHG=317>2.1 " XBD=1932 XHG=1823 YBD=353 YHG=317>colds " XBD=2023 XHG=1952 YBD=364 YHG=329>per " XBD=2201 XHG=2042 YBD=364 YHG=319>person) " XBD=2296 XHG=2223 YBD=353 YHG=317>but " XBD=2460 XHG=2314 YBD=364 YHG=317>hardly" XBD=1487 XHG=1330 YBD=415 YHG=369>enough " XBD=1564 XHG=1520 YBD=405 YHG=372>to " XBD=1646 XHG=1598 YBD=404 YHG=368>be " XBD=1723 XHG=1680 YBD=404 YHG=369>of " XBD=1949 XHG=1754 YBD=416 YHG=369>practical " XBD=2239 XHG=1980 YBD=416 YHG=369>importance, " XBD=2355 XHG=2276 YBD=404 YHG=369>and " XBD=2457 XHG=2388 YBD=404 YHG=369>the" XBD=1499 XHG=1331 YBD=456 YHG=420>number " XBD=1565 XHG=1523 YBD=455 YHG=420>of " XBD=1688 XHG=1588 YBD=466 YHG=420>days " XBD=1792 XHG=1713 YBD=456 YHG=420>lost " XBD=1919 XHG=1814 YBD=456 YHG=420>from " XBD=2080 XHG=1943 YBD=456 YHG=420>school " XBD=2261 XHG=2102 YBD=456 YHG=420>showed " XBD=2380 XHG=2285 YBD=467 YHG=420>only " XBD=2456 XHG=2404 YBD=455 YHG=432>an" XBD=1569 XHG=1329 YBD=506 YHG=471>immaterial " XBD=1824 XHG=1613 YBD=507 YHG=471>difference " XBD=1947 XHG=1873 YBD=517 YHG=472>(1.1 " XBD=2066 XHG=1995 YBD=518 YHG=483>per " XBD=2255 XHG=2109 YBD=518 YHG=483>person " XBD=2341 XHG=2299 YBD=507 YHG=472>in " XBD=2454 XHG=2386 YBD=507 YHG=471>the" XBD=1568 XHG=1328 YBD=565 YHG=522>inoculated, |>" XBD=1660 XHG=1601 YBD=558 YHG=524>1-0 " XBD=1731 XHG=1687 YBD=557 YHG=522>in " XBD=1826 XHG=1757 YBD=558 YHG=522>the " XBD=2059 XHG=1854 YBD=569 YHG=523>controls). " XBD=2194 XHG=2111 YBD=558 YHG=522>The " XBD=2455 XHG=2222 YBD=569 YHG=523>proportion" XBD=1371 XHG=1329 YBD=608 YHG=573>of " XBD=1574 XHG=1397 YBD=619 YHG=573>subjects " XBD=1805 XHG=1601 YBD=620 YHG=573>reporting " XBD=1883 XHG=1831 YBD=609 YHG=585>no " XBD=2019 XHG=1911 YBD=608 YHG=573>colds " XBD=2093 XHG=2049 YBD=608 YHG=576>at " XBD=2174 XHG=2120 YBD=608 YHG=573>all " XBD=2280 XHG=2200 YBD=608 YHG=585>was " XBD=2358 XHG=2308 YBD=609 YHG=575>20 " XBD=2456 XHG=2385 YBD=620 YHG=585>per" XBD=1432 XHG=1328 YBD=660 YHG=627>cent. " XBD=1497 XHG=1455 YBD=659 YHG=623>of " XBD=1585 XHG=1516 YBD=660 YHG=624>the " XBD=1836 XHG=1606 YBD=660 YHG=624>inoculated " XBD=2014 XHG=1856 YBD=671 YHG=624>against " XBD=2081 XHG=2038 YBD=660 YHG=625>11 " XBD=2176 XHG=2104 YBD=671 YHG=636>per " XBD=2299 XHG=2195 YBD=660 YHG=627>cent. " XBD=2363 XHG=2322 YBD=660 YHG=624>of " XBD=2452 XHG=2383 YBD=660 YHG=624>the" XBD=1516 XHG=1327 YBD=719 YHG=675>controls, " XBD=1631 XHG=1550 YBD=711 YHG=675>and " XBD=1697 XHG=1663 YBD=711 YHG=676>it " XBD=1762 XHG=1729 YBD=712 YHG=676>is " XBD=1966 XHG=1796 YBD=722 YHG=675>entirely " XBD=2040 XHG=1997 YBD=711 YHG=676>in " XBD=2153 XHG=2073 YBD=712 YHG=676>this " XBD=2212 XHG=2190 YBD=712 YHG=678>9 " XBD=2315 XHG=2244 YBD=722 YHG=688>per " XBD=2451 XHG=2347 YBD=712 YHG=679>cent." XBD=1537 XHG=1327 YBD=762 YHG=727>difference " XBD=1645 XHG=1551 YBD=762 YHG=727>that " XBD=1727 XHG=1658 YBD=762 YHG=727>the " XBD=1860 XHG=1741 YBD=763 YHG=727>lower " XBD=2075 XHG=1871 YBD=763 YHG=727>incidence " XBD=2131 XHG=2090 YBD=763 YHG=727>of " XBD=2212 XHG=2145 YBD=763 YHG=727>the " XBD=2452 XHG=2226 YBD=763 YHG=727>inoculated

" XBD=1453 XHG=1327 YBD=826 YHG=790>group " XBD=1572 XHG=1488 YBD=814 YHG=778>lies. " XBD=1674 XHG=1625 YBD=814 YHG=778>In " XBD=1780 XHG=1710 YBD=814 YHG=778>the " XBD=1981 XHG=1817 YBD=814 YHG=779>vaccine " XBD=2144 XHG=2018 YBD=825 YHG=790>group " XBD=2229 XHG=2183 YBD=813 YHG=779>12 " XBD=2373 XHG=2265 YBD=814 YHG=790>cases " XBD=2453 XHG=2411 YBD=814 YHG=779>of" XBD=1641 XHG=1326 YBD=876 YHG=829>complications, " XBD=1775 XHG=1675 YBD=864 YHG=829>such " XBD=1853 XHG=1808 YBD=865 YHG=841>as " XBD=2088 XHG=1885 YBD=865 YHG=828>tonsillitis " XBD=2195 XHG=2115 YBD=864 YHG=829>and " XBD=2452 XHG=2221 YBD=873 YHG=829>bronchitis," XBD=1427 XHG=1326 YBD=915 YHG=892>were " XBD=1667 XHG=1455 YBD=926 YHG=880>reported ; " XBD=1752 XHG=1709 YBD=915 YHG=880>in " XBD=1848 XHG=1779 YBD=915 YHG=880>the " XBD=2031 XHG=1876 YBD=915 YHG=879>control " XBD=2183 XHG=2058 YBD=927 YHG=892>group " XBD=2321 XHG=2210 YBD=916 YHG=880>there " XBD=2449 XHG=2349 YBD=916 YHG=892>were" XBD=1387 XHG=1330 YBD=967 YHG=932>11. " XBD=1583 XHG=1441 YBD=978 YHG=931>Lastly |>|>" XBD=1650 XHG=1601 YBD=966 YHG=932>55 " XBD=1853 XHG=1668 YBD=967 YHG=931>students " XBD=1972 XHG=1871 YBD=967 YHG=943>were " XBD=2170 XHG=1992 YBD=978 YHG=930>changed " XBD=2294 XHG=2189 YBD=966 YHG=931>after " XBD=2336 XHG=2312 YBD=967 YHG=944>a " XBD=2451 XHG=2355 YBD=978 YHG=944>year" XBD=1430 XHG=1325 YBD=1017 YHG=982>from " XBD=1522 XHG=1453 YBD=1017 YHG=982>the " XBD=1773 XHG=1544 YBD=1018 YHG=982>inoculated " XBD=1839 XHG=1795 YBD=1018 YHG=985>to " XBD=1931 XHG=1863 YBD=1018 YHG=982>the " XBD=2109 XHG=1955 YBD=1018 YHG=983>control " XBD=2269 XHG=2131 YBD=1029 YHG=994>group, " XBD=2339 XHG=2295 YBD=1018 YHG=995>or " XBD=2449 XHG=2362 YBD=1019 YHG=983>vice" XBD=1700 XHG=1325 YBD=1080 YHG=1033>versa-believing, " XBD=1768 XHG=1727 YBD=1069 YHG=1033>of " XBD=1942 XHG=1793 YBD=1077 YHG=1045>course, " XBD=2060 XHG=1969 YBD=1069 YHG=1033>that " XBD=2183 XHG=2085 YBD=1079 YHG=1033>they " XBD=2306 XHG=2207 YBD=1069 YHG=1045>were " XBD=2449 XHG=2333 YBD=1080 YHG=1033>being" XBD=1552 XHG=1323 YBD=1120 YHG=1084>inoculated " XBD=1636 XHG=1592 YBD=1120 YHG=1087>at " XBD=1730 XHG=1676 YBD=1120 YHG=1084>all " XBD=2017 XHG=1768 YBD=1121 YHG=1085>times-and " XBD=2160 XHG=2056 YBD=1120 YHG=1085>their " XBD=2449 XHG=2199 YBD=1132 YHG=1085>experiences" XBD=1452 XHG=1324 YBD=1172 YHG=1136>under " XBD=1533 XHG=1464 YBD=1172 YHG=1135>the " XBD=1628 XHG=1547 YBD=1172 YHG=1139>two " XBD=1867 XHG=1642 YBD=1172 YHG=1136>conditions " XBD=1952 XHG=1882 YBD=1172 YHG=1136>did " XBD=2038 XHG=1966 YBD=1172 YHG=1139>not " XBD=2166 XHG=2052 YBD=1172 YHG=1136>differ " XBD=2446 XHG=2179 YBD=1184 YHG=1136>appreciably." XBD=1375 XHG=1324 YBD=1224 YHG=1188>In " XBD=1524 XHG=1397 YBD=1231 YHG=1188>short, " XBD=1657 XHG=1546 YBD=1223 YHG=1188>there " XBD=1714 XHG=1680 YBD=1223 YHG=1189>is " XBD=1835 XHG=1740 YBD=1234 YHG=1187>only " XBD=1882 XHG=1858 YBD=1223 YHG=1200>a " XBD=2005 XHG=1907 YBD=1234 YHG=1200>very " XBD=2129 XHG=2025 YBD=1224 YHG=1188>little " XBD=2198 XHG=2156 YBD=1223 YHG=1191>to " XBD=2273 XHG=2225 YBD=1223 YHG=1188>be " XBD=2382 XHG=2295 YBD=1224 YHG=1188>said " XBD=2448 XHG=2405 YBD=1224 YHG=1189>in" XBD=1466 XHG=1321 YBD=1275 YHG=1240>favour " XBD=1522 XHG=1481 YBD=1274 YHG=1239>of " XBD=1606 XHG=1536 YBD=1275 YHG=1238>the " XBD=1747 XHG=1622 YBD=1285 YHG=1238>really " XBD=1958 XHG=1760 YBD=1275 YHG=1239>intensive " XBD=2219 XHG=1974 YBD=1275 YHG=1239>inoculation " XBD=2448 XHG=2232 YBD=1287 YHG=1239>procedure" XBD=1416 XHG=1322 YBD=1327 YHG=1291>that " XBD=1517 XHG=1436 YBD=1326 YHG=1302>was " XBD=1728 XHG=1540 YBD=1337 YHG=1290>adopted." XBD=1422 XHG=1372 YBD=1378 YHG=1342>In " XBD=1471 XHG=1447 YBD=1377 YHG=1354>a " XBD=1639 XHG=1494 YBD=1378 YHG=1342>second " XBD=1921 XHG=1662 YBD=1389 YHG=1342>experiment, " XBD=1989 XHG=1947 YBD=1377 YHG=1342>in " XBD=2142 XHG=2012 YBD=1377 YHG=1341>which " XBD=2190 XHG=2167 YBD=1377 YHG=1353>a " XBD=2446 XHG=2214 YBD=1390 YHG=1341>polyvalent" XBD=1485 XHG=1321 YBD=1430 YHG=1394>vaccine " XBD=1800 XHG=1518 YBD=1430 YHG=1393>administered " XBD=1959 XHG=1832 YBD=1440 YHG=1393>orally " XBD=2070 XHG=1989 YBD=1429 YHG=1405>was " XBD=2212 XHG=2102 YBD=1437 YHG=1393>used, " XBD=2271 XHG=2246 YBD=1429 YHG=1405>a " XBD=2447 XHG=2301 YBD=1441 YHG=1392>wholly" XBD=1504 XHG=1320 YBD=1492 YHG=1446>negative " XBD=1661 XHG=1538 YBD=1481 YHG=1445>result " XBD=1776 XHG=1694 YBD=1481 YHG=1458>was " XBD=1990 XHG=1809 YBD=1481 YHG=1445>reached. " XBD=2124 XHG=2043 YBD=1482 YHG=1445>The " XBD=2447 XHG=2159 YBD=1492 YHG=1445>experimental" XBD=1446 XHG=1321 YBD=1545 YHG=1509>group " XBD=1506 XHG=1464 YBD=1533 YHG=1497>of " XBD=1596 XHG=1522 YBD=1534 YHG=1498>363 " XBD=1695 XHG=1613 YBD=1533 YHG=1497>had |>" XBD=1775 XHG=1715 YBD=1533 YHG=1499>1’8 " XBD=1901 XHG=1792 YBD=1533 YHG=1496>colds " XBD=1990 XHG=1919 YBD=1544 YHG=1508>per " XBD=2150 XHG=2005 YBD=1544 YHG=1509>person " XBD=2237 XHG=2166 YBD=1544 YHG=1509>per " XBD=2348 XHG=2252 YBD=1543 YHG=1509>year " XBD=2444 XHG=2365 YBD=1533 YHG=1497>and" XBD=1388 XHG=1319 YBD=1584 YHG=1548>the " XBD=1563 XHG=1409 YBD=1584 YHG=1548>control " XBD=1708 XHG=1582 YBD=1596 YHG=1560>group " XBD=1769 XHG=1728 YBD=1584 YHG=1548>of " XBD=1862 XHG=1790 YBD=1585 YHG=1549>372 " XBD=1964 XHG=1881 YBD=1584 YHG=1548>had " XBD=2073 XHG=1987 YBD=1593 YHG=1549>1’7 ; " XBD=2177 XHG=2107 YBD=1585 YHG=1549>the " XBD=2345 XHG=2197 YBD=1584 YHG=1548>former " XBD=2444 XHG=2363 YBD=1584 YHG=1549>lost|>" XBD=1383 XHG=1319 YBD=1637 YHG=1601>0-8 " XBD=1502 XHG=1402 YBD=1647 YHG=1600>days " XBD=1592 XHG=1521 YBD=1647 YHG=1612>per " XBD=1765 XHG=1609 YBD=1647 YHG=1612>person, " XBD=1854 XHG=1785 YBD=1636 YHG=1600>the " XBD=1994 XHG=1872 YBD=1636 YHG=1600>latter " XBD=2101 XHG=2011 YBD=1646 YHG=1601>0’7 ; " XBD=2183 XHG=2138 YBD=1636 YHG=1601>13 " XBD=2285 XHG=2204 YBD=1637 YHG=1600>and " XBD=2354 XHG=2307 YBD=1636 YHG=1601>14 " XBD=2443 XHG=2372 YBD=1648 YHG=1613>per" XBD=1422 XHG=1318 YBD=1687 YHG=1654>cent. " XBD=1710 XHG=1444 YBD=1699 YHG=1652>respectively " XBD=1811 XHG=1729 YBD=1687 YHG=1652>had " XBD=1884 XHG=1832 YBD=1688 YHG=1663>no " XBD=2016 XHG=1906 YBD=1688 YHG=1652>colds " XBD=2083 XHG=2040 YBD=1687 YHG=1655>at " XBD=2183 XHG=2105 YBD=1697 YHG=1652>all; " XBD=2269 XHG=2221 YBD=1688 YHG=1653>30 " XBD=2371 XHG=2292 YBD=1687 YHG=1652>and " XBD=2444 XHG=2394 YBD=1688 YHG=1653>34" XBD=1417 XHG=1317 YBD=1738 YHG=1715>were " XBD=1675 XHG=1460 YBD=1749 YHG=1703>registered " XBD=1763 XHG=1719 YBD=1738 YHG=1715>as " XBD=1956 XHG=1807 YBD=1750 YHG=1703>having " XBD=2310 XHG=1999 YBD=1750 YHG=1704>complications. " XBD=2443 XHG=2364 YBD=1739 YHG=1704>Yet" XBD=1418 XHG=1319 YBD=1790 YHG=1754>both " XBD=1580 XHG=1441 YBD=1791 YHG=1754>record " XBD=1629 XHG=1605 YBD=1790 YHG=1767>a " XBD=1861 XHG=1652 YBD=1791 YHG=1755>reduction " XBD=1926 XHG=1884 YBD=1791 YHG=1755>of " XBD=1998 XHG=1951 YBD=1791 YHG=1756>70 " XBD=2092 XHG=2022 YBD=1802 YHG=1767>per " XBD=2218 XHG=2115 YBD=1791 YHG=1758>cent. " XBD=2348 XHG=2242 YBD=1790 YHG=1754>from " XBD=2440 XHG=2371 YBD=1791 YHG=1754>the" XBD=1485 XHG=1316 YBD=1842 YHG=1805>number " XBD=1559 XHG=1518 YBD=1841 YHG=1806>of " XBD=1701 XHG=1592 YBD=1842 YHG=1806>colds " XBD=1834 XHG=1734 YBD=1853 YHG=1806>they " XBD=2084 XHG=1864 YBD=1842 YHG=1806>remember " XBD=2264 XHG=2114 YBD=1854 YHG=1806>having " XBD=2339 XHG=2296 YBD=1842 YHG=1807>in " XBD=2440 XHG=2371 YBD=1842 YHG=1806>the" XBD=1500 XHG=1315 YBD=1905 YHG=1858>previous " XBD=1630 XHG=1523 YBD=1904 YHG=1869>year, " XBD=1784 XHG=1653 YBD=1893 YHG=1857>which " XBD=1924 XHG=1806 YBD=1905 YHG=1858>again " XBD=2186 XHG=1944 YBD=1905 YHG=1858>emphasises " XBD=2277 XHG=2209 YBD=1894 YHG=1858>the " XBD=2440 XHG=2299 YBD=1894 YHG=1857>unreli-" XBD=1460 XHG=1317 YBD=1955 YHG=1908>ability " XBD=1533 XHG=1492 YBD=1945 YHG=1909>of " XBD=1848 XHG=1564 YBD=1945 YHG=1909>recollections. " XBD=1936 XHG=1899 YBD=1945 YHG=1909>A " XBD=2077 XHG=1968 YBD=1945 YHG=1909>third " XBD=2368 XHG=2108 YBD=1957 YHG=1910>experiment, " XBD=2442 XHG=2400 YBD=1945 YHG=1909>in" XBD=1445 XHG=1314 YBD=1996 YHG=1960>which " XBD=1486 XHG=1462 YBD=1995 YHG=1972>a " XBD=1798 XHG=1503 YBD=2008 YHG=1963>streptococcus " XBD=1979 XHG=1816 YBD=1996 YHG=1962>vaccine " XBD=2077 XHG=1997 YBD=1997 YHG=1973>was " XBD=2212 XHG=2094 YBD=2008 YHG=1961>given " XBD=2284 XHG=2229 YBD=2007 YHG=1960>by " XBD=2441 XHG=2300 YBD=1997 YHG=1961>mouth" XBD=1396 XHG=1315 YBD=2047 YHG=2012>and " XBD=1446 XHG=1423 YBD=2048 YHG=2025>a " XBD=1632 XHG=1478 YBD=2048 YHG=2012>control " XBD=1786 XHG=1661 YBD=2059 YHG=2024>group " XBD=1915 XHG=1816 YBD=2048 YHG=2012>took " XBD=2218 XHG=1944 YBD=2048 YHG=2012>lactose-filled " XBD=2440 XHG=2247 YBD=2059 YHG=2012>capsules," XBD=1394 XHG=1313 YBD=2099 YHG=2075>was " XBD=1485 XHG=1432 YBD=2099 YHG=2075>no " XBD=1631 XHG=1522 YBD=2099 YHG=2074>more " XBD=1945 XHG=1668 YBD=2111 YHG=2064>encouraging. " XBD=2054 XHG=1997 YBD=2099 YHG=2065>To " XBD=2181 XHG=2091 YBD=2099 YHG=2075>sum " XBD=2287 XHG=2219 YBD=2111 YHG=2075>up, " XBD=2438 XHG=2325 YBD=2099 YHG=2063>these" XBD=1463 XHG=1313 YBD=2150 YHG=2114>careful " XBD=1745 XHG=1477 YBD=2161 YHG=2116>experiments " XBD=1931 XHG=1761 YBD=2163 YHG=2118>support " XBD=2014 XHG=1946 YBD=2150 YHG=2115>the " XBD=2133 XHG=2032 YBD=2150 YHG=2115>view " XBD=2240 XHG=2149 YBD=2150 YHG=2114>that " XBD=2439 XHG=2256 YBD=2150 YHG=2115>vaccines" XBD=1380 XHG=1314 YBD=2201 YHG=2177>are " XBD=1451 XHG=1409 YBD=2201 YHG=2166>of " XBD=1581 XHG=1477 YBD=2201 YHG=2166>little " XBD=1656 XHG=1610 YBD=2201 YHG=2178>or " XBD=1735 XHG=1682 YBD=2202 YHG=2178>no " XBD=1879 XHG=1764 YBD=2201 YHG=2166>value " XBD=2035 XHG=1909 YBD=2201 YHG=2166>either " XBD=2124 XHG=2062 YBD=2201 YHG=2166>for " XBD=2341 XHG=2152 YBD=2212 YHG=2165>reducing " XBD=2438 XHG=2369 YBD=2201 YHG=2165>the" XBD=1518 XHG=1312 YBD=2254 YHG=2218>incidence " XBD=1579 XHG=1537 YBD=2253 YHG=2217>of " XBD=1703 XHG=1595 YBD=2253 YHG=2217>colds " XBD=1767 XHG=1723 YBD=2253 YHG=2229>or " XBD=1828 XHG=1784 YBD=2253 YHG=2229>as " XBD=2074 XHG=1846 YBD=2264 YHG=2217>safeguards " XBD=2250 XHG=2094 YBD=2263 YHG=2217>against " XBD=2438 XHG=2277 YBD=2264 YHG=2216>compli-" XBD=1466 XHG=1312 YBD=2304 YHG=2268>cations " XBD=1628 XHG=1481 YBD=2316 YHG=2269>arising " XBD=1745 XHG=1642 YBD=2304 YHG=2269>from " XBD=1880 XHG=1758 YBD=2304 YHG=2268>them. " XBD=2024 XHG=1913 YBD=2314 YHG=2269>They " XBD=2147 XHG=2038 YBD=2303 YHG=2268>show " XBD=2227 XHG=2159 YBD=2303 YHG=2268>the " XBD=2440 XHG=2242 YBD=2314 YHG=2269>necessity" XBD=1354 XHG=1312 YBD=2355 YHG=2319>of " XBD=1764 XHG=1385 YBD=2366 YHG=2323>contemporaneous " XBD=1982 XHG=1797 YBD=2362 YHG=2319>controls, " XBD=2076 XHG=2014 YBD=2354 YHG=2319>for " XBD=2149 XHG=2106 YBD=2354 YHG=2320>in " XBD=2265 XHG=2177 YBD=2354 YHG=2319>face " XBD=2338 XHG=2297 YBD=2354 YHG=2319>of " XBD=2438 XHG=2368 YBD=2355 YHG=2320>the" XBD=1454 XHG=1309 YBD=2407 YHG=2370>results " XBD=1510 XHG=1476 YBD=2406 YHG=2371>it " XBD=1563 XHG=1529 YBD=2406 YHG=2372>is " XBD=1755 XHG=1586 YBD=2406 YHG=2370>difficult " XBD=1819 XHG=1776 YBD=2406 YHG=2373>to " XBD=1943 XHG=1840 YBD=2406 YHG=2370>have " XBD=2046 XHG=1966 YBD=2417 YHG=2382>any " XBD=2171 XHG=2066 YBD=2406 YHG=2370>faith " XBD=2233 XHG=2191 YBD=2406 YHG=2371>in " XBD=2437 XHG=2254 YBD=2406 YHG=2370>histories" XBD=1353 XHG=1311 YBD=2458 YHG=2422>of " XBD=1466 XHG=1373 YBD=2470 YHG=2425>past " XBD=1659 XHG=1488 YBD=2458 YHG=2422>attacks. " XBD=1804 XHG=1712 YBD=2458 YHG=2422>And " XBD=1958 XHG=1824 YBD=2468 YHG=2421>lastly, " XBD=2024 XHG=1981 YBD=2457 YHG=2433>as " XBD=2115 XHG=2047 YBD=2457 YHG=2422>the " XBD=2303 XHG=2139 YBD=2458 YHG=2421>authors " XBD=2438 XHG=2324 YBD=2469 YHG=2423>point" XBD=1394 XHG=1310 YBD=2517 YHG=2477>out, " XBD=1542 XHG=1442 YBD=2520 YHG=2473>they " XBD=1860 XHG=1587 YBD=2510 YHG=2474>demonstrate " XBD=1998 XHG=1907 YBD=2508 YHG=2473>how " XBD=2170 XHG=2043 YBD=2520 YHG=2473>easily " XBD=2439 XHG=2215 YBD=2509 YHG=2473>individual" XBD=1491 XHG=1309 YBD=2572 YHG=2526>opinions " XBD=1582 XHG=1507 YBD=2560 YHG=2537>can " XBD=1644 XHG=1595 YBD=2571 YHG=2536>go " XBD=1822 XHG=1659 YBD=2571 YHG=2527>astray : " XBD=2049 XHG=1856 YBD=2571 YHG=2524>&dquo; During " XBD=2131 XHG=2063 YBD=2559 YHG=2524>the " XBD=2285 XHG=2147 YBD=2560 YHG=2536>course " XBD=2341 XHG=2300 YBD=2560 YHG=2524>of " XBD=2436 XHG=2355 YBD=2560 YHG=2525>this" XBD=1432 XHG=1307 YBD=2622 YHG=2577>study " XBD=1615 XHG=1462 YBD=2611 YHG=2575>several " XBD=1875 XHG=1644 YBD=2622 YHG=2575>physicians " XBD=2010 XHG=1907 YBD=2611 YHG=2575>have " XBD=2203 XHG=2043 YBD=2611 YHG=2576>written " XBD=2280 XHG=2235 YBD=2611 YHG=2587>or " XBD=2436 XHG=2309 YBD=2611 YHG=2575>called" XBD=1354 XHG=1307 YBD=2662 YHG=2638>us " XBD=1411 XHG=1368 YBD=2662 YHG=2630>to " XBD=1521 XHG=1424 YBD=2673 YHG=2628>say’ I " XBD=1672 XHG=1570 YBD=2662 YHG=2626>have " XBD=1711 XHG=1685 YBD=2661 YHG=2638>a " XBD=1882 XHG=1722 YBD=2674 YHG=2627>patient " XBD=1983 XHG=1893 YBD=2662 YHG=2627>who " XBD=2077 XHG=1996 YBD=2662 YHG=2638>was " XBD=2116 XHG=2093 YBD=2661 YHG=2639>a " XBD=2294 XHG=2128 YBD=2662 YHG=2627>student " XBD=2351 XHG=2307 YBD=2662 YHG=2629>at " XBD=2432 XHG=2363 YBD=2662 YHG=2627>the" XBD=1541 XHG=1307 YBD=2724 YHG=2678>University " XBD=1633 XHG=1551 YBD=2713 YHG=2677>last " XBD=1751 XHG=1655 YBD=2724 YHG=2690>year " XBD=1843 XHG=1763 YBD=2713 YHG=2678>and " XBD=1954 XHG=1855 YBD=2713 YHG=2678>took " XBD=2065 XHG=1964 YBD=2724 YHG=2689>your " XBD=2166 XHG=2076 YBD=2713 YHG=2677>cold " XBD=2342 XHG=2177 YBD=2714 YHG=2678>vaccine " XBD=2435 XHG=2356 YBD=2714 YHG=2678>and" XBD=1377 XHG=1306 YBD=2775 YHG=2733>got " XBD=1491 XHG=1392 YBD=2765 YHG=2729>such " XBD=1690 XHG=1508 YBD=2776 YHG=2729>splendid " XBD=1851 XHG=1707 YBD=2765 YHG=2729>results " XBD=1961 XHG=1868 YBD=2765 YHG=2728>that " XBD=2025 XHG=1976 YBD=2764 YHG=2729>he " XBD=2170 XHG=2042 YBD=2765 YHG=2732>wants " XBD=2230 XHG=2187 YBD=2765 YHG=2733>to " XBD=2433 XHG=2247 YBD=2765 YHG=2730>continue" XBD=1352 XHG=1306 YBD=2817 YHG=2781>it. " XBD=1498 XHG=1404 YBD=2815 YHG=2780>Will " XBD=1609 XHG=1529 YBD=2826 YHG=2793>you " XBD=1690 XHG=1642 YBD=2815 YHG=2780>be " XBD=1828 XHG=1723 YBD=2826 YHG=2781>good " XBD=2017 XHG=1859 YBD=2827 YHG=2781>enough " XBD=2092 XHG=2049 YBD=2816 YHG=2784>to " XBD=2197 XHG=2125 YBD=2816 YHG=2781>tell " XBD=2290 XHG=2227 YBD=2817 YHG=2792>me " XBD=2433 XHG=2323 YBD=2816 YHG=2781>what" XBD=1468 XHG=1305 YBD=2867 YHG=2832>vaccine " XBD=1574 XHG=1495 YBD=2877 YHG=2843>you " XBD=1667 XHG=1601 YBD=2867 YHG=2843>are " XBD=1872 XHG=1693 YBD=2879 YHG=2832>using ? ’ " XBD=2016 XHG=1925 YBD=2867 YHG=2831>And " XBD=2099 XHG=2041 YBD=2867 YHG=2843>we " XBD=2257 XHG=2125 YBD=2867 YHG=2832>would " XBD=2376 XHG=2283 YBD=2867 YHG=2831>look " XBD=2434 XHG=2401 YBD=2867 YHG=2833>it" XBD=1360 XHG=1304 YBD=2929 YHG=2894>up " XBD=1470 XHG=1390 YBD=2917 YHG=2882>and " XBD=1584 XHG=1501 YBD=2917 YHG=2881>find " XBD=1655 XHG=1613 YBD=2917 YHG=2883>in " XBD=1809 XHG=1685 YBD=2929 YHG=2893>many " XBD=2037 XHG=1837 YBD=2918 YHG=2883>instances " XBD=2161 XHG=2068 YBD=2918 YHG=2882>that " XBD=2258 XHG=2190 YBD=2918 YHG=2883>the " XBD=2434 XHG=2289 YBD=2929 YHG=2894>person" XBD=1346 XHG=1303 YBD=2968 YHG=2934>in " XBD=1558 XHG=1374 YBD=2980 YHG=2933>question " XBD=1654 XHG=1584 YBD=2979 YHG=2936>got " XBD=1751 XHG=1681 YBD=2968 YHG=2933>the " XBD=1911 XHG=1779 YBD=2969 YHG=2933>sterile " XBD=2062 XHG=1938 YBD=2970 YHG=2933>saline " XBD=2265 XHG=2091 YBD=2970 YHG=2934>solution " XBD=2336 XHG=2292 YBD=2969 YHG=2945>or " XBD=2432 XHG=2362 YBD=2968 YHG=2933>the" XBD=1450 XHG=1302 YBD=3019 YHG=2984>lactose " XBD=1690 XHG=1469 YBD=3030 YHG=2984>capsules.&dquo;

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" XBD=1576 XHG=1353 YBD=3264 YHG=3229>PROBLEMS " XBD=1645 XHG=1604 YBD=3263 YHG=3228>of " XBD=1933 XHG=1670 YBD=3274 YHG=3228>professional " XBD=2083 XHG=1957 YBD=3264 YHG=3229>ethics " XBD=2211 XHG=2110 YBD=3274 YHG=3240>vary " XBD=2334 XHG=2236 YBD=3263 YHG=3228>with " XBD=2430 XHG=2360 YBD=3264 YHG=3228>the" XBD=1435 XHG=1302 YBD=3315 YHG=3279>times. " XBD=1539 XHG=1489 YBD=3314 YHG=3279>In " XBD=1582 XHG=1558 YBD=3313 YHG=3291>a " XBD=1725 XHG=1600 YBD=3325 YHG=3290>paper " XBD=1839 XHG=1742 YBD=3315 YHG=3279>read " XBD=1901 XHG=1856 YBD=3315 YHG=3282>to " XBD=1988 XHG=1920 YBD=3315 YHG=3280>the " XBD=2163 XHG=2009 YBD=3315 YHG=3279>British " XBD=2430 XHG=2176 YBD=3315 YHG=3267>Association" XBD=1343 XHG=1301 YBD=3365 YHG=3331>in " XBD=1533 XHG=1378 YBD=3375 YHG=3328>August " XBD=1642 XHG=1569 YBD=3364 YHG=3329>Mr. " XBD=1718 XHG=1672 YBD=3365 YHG=3330>T. " XBD=1809 XHG=1756 YBD=3365 YHG=3330>H. " XBD=2078 XHG=1847 YBD=3365 YHG=3330>MARSHALL |>" XBD=2302 XHG=2111 YBD=3364 YHG=3328>showed 1 con-" XBD=1508 XHG=1301 YBD=3426 YHG=3380>vincingly " XBD=1625 XHG=1533 YBD=3415 YHG=3379>how " XBD=1724 XHG=1654 YBD=3415 YHG=3379>the " XBD=1971 XHG=1756 YBD=3416 YHG=3381>antithesis " XBD=2183 XHG=2000 YBD=3415 YHG=3380>between " XBD=2428 XHG=2210 YBD=3416 YHG=3390>commerce" XBD=1382 XHG=1302 YBD=3465 YHG=3430>and " XBD=1480 XHG=1412 YBD=3465 YHG=3430>the " XBD=1753 XHG=1509 YBD=3475 YHG=3429>professions " XBD=1854 XHG=1780 YBD=3466 YHG=3431>has " XBD=1984 XHG=1882 YBD=3466 YHG=3431>been " XBD=2227 XHG=2001 YBD=3464 YHG=3429>weakened. " XBD=2427 XHG=2281 YBD=3466 YHG=3429>Never-" XBD=1449 XHG=1299 YBD=3515 YHG=3480>theless " XBD=1537 XHG=1469 YBD=3514 YHG=3479>the " XBD=1650 XHG=1554 YBD=3514 YHG=3480>code " XBD=1705 XHG=1662 YBD=3515 YHG=3480>of " XBD=2120 XHG=1716 YBD=3516 YHG=3480>self-advertisement " XBD=2217 XHG=2135 YBD=3514 YHG=3480>still " XBD=2428 XHG=2226 YBD=3526 YHG=3486>separates

1 See Nature, Lond. Oct. 15th, p. 712.