Meteorological Work at the Royal Observatory, Greenwich, 1905

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    In the Egyptian Book of the Dead one of the ancients, among his redeeming merits, declared that he had " not inflicted long lectures " on his hearers. You will, I fear, deny me this merit unless I at once sit down. *+* TIE illustruttiorrs ac~oittprnyirrg t k i s p p t ctppeur by the wttrtr.q of .If,.. Ilgdr, tiittitor nf " l'lte 1:oytri

    Mail ' I ; oJNessrs. dfaortillwi arid 1'0. ; arul n l ~ o of ti@+ Proprietors of tire l l l r r s l~~a td I.otrtIort Nerl*s."

    Meteorological Work at the Royal Observatory, Greenwich, 1905. The ineteorological observatioiis by eye and by self-recording instruments

    liave heen inaintained i19 nsual, and the special observations of clouds on selected (lays in eacli iiiontli have been continued at the request of tlie International lhlloon Coiiiiiiittee, a Pineman Neplioscope having been used for this purpose.

    Daily reports have been issued as ill previous years, weekly inetcorological returns fiiriiished to the Registrar-General, inoiitlily returns of teiiiperaturc, rainfall, aiid snnsliine to the Society, and quarterly reports to the Meteorological Olfice.

    Tlia teiiipcr;iture of tlie air ranged between 87O.2 on July 26 and lO"*!i 011 danunry 1. The mean tcniperature for the year mas 49O.7, being 0O.S above the average for the 60 years 1841-1 890. Three months-Febrnary, hlnrch, mid July-sliowe(1 mean temperatures well above tlie average, by 2"9, 3"4, mitl 3"% respectively ; while October was exceptionally ~0111, 4O.2 below the average, nearly the coldest October in 68 years.

    The snnsliine recorded in tlie year anionnted to 1490 hours out of a possible duratioii ot' 4459 hours, giving a percentage of nearly 38 for the yem, and ii total 32 Iioiirs greater thaii tlie nverage value for the years 1887 to 190.l, csclutliiig tlie yeais 1894 to 1896, when the siin~lii~ie ball was proved to have been defective. KO sunless day occurred in May or Jaly, and only one, that of tlie Solar Eclipsc, iu August. The longest register for a single day W ~ M 14.3 hours on July 3, 14.2 hours being registered both on May 17 aiid June 23 ; IJLlt the higlicst percentage of possible sunshine was 91 per cent on May 17.

    The highest reading of the Solar Radiation Tlierniometer with bleckenetl 1Jdb in 'L'(CCIO was 155O.7 on July 27, and the lowest readings on tlie grass were n'.8 on .Jailuary 1, 10"*0 on January 2, and 13O.8 on November 22 ; another uiiurrual rending being 3 3 O . j on August 2, a clay which also showed the highest reading for tlie month, 148O.8, of the Solar Radiation Thernionieter.

    Rain fell on 161 days in the year to the total amount of 23,024 ius., being 1.514 in. less than the average for the 50 years 1841-1890; less than half the average amount being measured in February, July, October, aiicl December, and iiiore tlian double tlie average amount in Marcli and June, the wettest days being June 5, with 1.080 in., and March 15, with 0.933 in.

    Tlie greatest recordcd pressure of the wind was 23.5 lbs. to the square foot on March 12. The greatest daily velocity was 719 miles on November 27, tlie next greatest being 710 miles on March 11, and the least 69 iiiiles on December 11. The greatest honrly velocity was 44 miles on November 26 and 37. The total movement for the year was 107,583 miles, tlie monthly amounts lieing greatest in Februury and March and least in July and December.

    Parhelia were observed on March 10 and April 29, Paraselente on January 13, aiid Aurora Borealis on November 15.-IV. H. 11. CHRISTIE, March 16, 1906.