SCHOOL SCIENCE AND MATHEMATICS 755 A SUGGESTION FOR MEMORIZATION Various devices have been suggested for the memorization of certain numbers which appear in mathematics. To remember piy think of the expression, "See, I have a number!" The number of letters in each word gives the sequence of digits 3.1416. If more accuracy is required, you may use "See, I have a rhyme assisting My feeble brain its tasks sometime re- sisting." One student remembers \/3 from 1732, the year of George Washington’s birth. However, it is probably expecting too great a knowledge of history to remember V2 as fifteen years after the abdication of Richard II of England (1399+15 ==1414).-C. B. READ, University of Wichita. NEW NYLONS WILL BE MADE FROM SUGAR New nylon plastics that have unusual properties and are expected to cost less than the present product will be made from sugar. It will be possible to "tailor" the properties of the new nylons, or polyamides as chemists call them, to make everything from sheer stockings to ball bearings. The starting compound in the production of the new nylons is 2-methyl- piperazine, prepared by reacting sugar with ammonia and hydrogen under pres- POLIO IMMUNITY INCREASING EVEN WITHOUT SALK VACCINE Even without Salk shots, people are naturally getting more and more immune to polio, Dr. Robert L. Vought, Bristol Laboratories, Inc., Syracuse, N.Y., and Dr. Morris Greenberg, New York City Department of Health, reported in the Journal of the American Medical Association. Natural immunization against polio occurs when the virus is spread from the gastrointestinal or respiratory tract of either patients or carriers to other people. These people, in turn, become carriers and usually develop immunity without developing active cases of the disease. "DRY PHOTOGRAPHY" AND FILMS FOR NIGHT USE AMONG MILITARY NEEDS SEEN BY ARMY GENERAL High speed films for military photography at night and a completely dry photographic process for battlefield use were set forth as technical goals for re- search science by an Army general speaking to members of the Society of Photo- graphic Scientists and Engineers at their 1957 Annual Conference. Brig. Gen. Earle F. Cook, commanding officer, Army Signal Engineering Laboratories, Fort Monmouth, N. J., told the scientists that photography is the most advanced sensory technique available to the military for gathering intel- ligence information in combat surveillance. He cited the advantages of photography in providing a permanent record for expert examination, high resolution for detection of targets, and comparatively light and compact equipment.

A SUGGESTION FOR MEMORIZATION

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SCHOOL SCIENCE AND MATHEMATICS 755

A SUGGESTION FOR MEMORIZATIONVarious devices have been suggested for the memorization of certain numbers

which appear in mathematics. To remember piy think of the expression, "See, Ihave a number!" The number of letters in each word gives the sequence ofdigits 3.1416. If more accuracy is required, you may use

"See, I have a rhyme assistingMy feeble brain its tasks sometime re-sisting."

One student remembers \/3 from 1732, the year of George Washington’s birth.However, it is probably expecting too great a knowledge of history to rememberV2 as fifteen years after the abdication of Richard II of England (1399+15==1414).-�C. B. READ, University of Wichita.

NEW NYLONS WILL BE MADE FROM SUGARNew nylon plastics that have unusual properties and are expected to cost less

than the present product will be made from sugar.It will be possible to "tailor" the properties of the new nylons, or polyamides as

chemists call them, to make everything from sheer stockings to ball bearings.The starting compound in the production of the new nylons is 2-methyl-

piperazine, prepared by reacting sugar with ammonia and hydrogen under pres-

POLIO IMMUNITY INCREASING EVEN WITHOUT SALK VACCINEEven without Salk shots, people are naturally getting more and more immune

to polio, Dr. Robert L. Vought, Bristol Laboratories, Inc., Syracuse, N.Y., andDr. Morris Greenberg, New York City Department of Health, reported in theJournal of the American Medical Association.Natural immunization against polio occurs when the virus is spread from the

gastrointestinal or respiratory tract of either patients or carriers to other people.These people, in turn, become carriers and usually develop immunity withoutdeveloping active cases of the disease.

"DRY PHOTOGRAPHY" AND FILMS FOR NIGHT USE AMONGMILITARY NEEDS SEEN BY ARMY GENERAL

High speed films for military photography at night and a completely dryphotographic process for battlefield use were set forth as technical goals for re-search science by an Army general speaking to members of the Society of Photo-graphic Scientists and Engineers at their 1957 Annual Conference.

Brig. Gen. Earle F. Cook, commanding officer, Army Signal EngineeringLaboratories, Fort Monmouth, N. J., told the scientists that photography is themost advanced sensory technique available to the military for gathering intel-ligence information in combat surveillance.He cited the advantages of photography in providing a permanent record for

expert examination, high resolution for detection of targets, and comparativelylight and compact equipment.