846 EXPERIMENT STATION RECORD. 



growth] and tlmt the occurrence of heavy and well-distributed rainfalls in the 

 months of May and June or June and July are of the tirst importance. . . . The 

 rain during the.period under review contril)uted an average of 121 lbs. of chlorin, 

 ecjuivalent to, in round numbers, 200 lbs. of common salt per acre, and 1.5J9 lbs. of 

 combined nitrf>gen, the equivalent of, in round numbers, 8 lbs. of sulphate of 

 ammonia." 



The climatolog-y of Africa, E. G. Kavexsts:in et al. [Upt. lirltish .l.svsoc. ^Idr. 

 ScL, 1901, pp. 883-395, figs. ^).^This is the tenth and final report of the committee 

 appointed b^ the association to report on this subject, and gives summaries of obser- 

 vations during the year ended May 31, 1901, on pressure, temperature, precipitation, 

 humidity, evaporation, prevailing wind, etc., at 21 stations in Africa, "including 

 Asiut and Omdurman; Old Calabar; Blantyre, Lauderdale, Fort Johnston, and 

 Nkata Bay, in Nyasaland; Kisimayu, Malindi, Lamu, Takaunga, Mombasa, and Shi- 

 moni, on the coast of British East Africa; Machako's, Kitui, Nairobi, and Kikuyu, in 

 the interior of that Protectorate; and from the four lake stations in Buganda." 

 There are also added the results of 7 years' ol)servations on the rainfall at Mengo 

 (Buganda), taken from the unpul)lished journal of A. M. Mackay, and a tal)le giving 

 the rainfall since 1890 at a number of stations. 



Rainfall and temperature at Pretoria, J. L. Soutter {Transvaal A gr. Jour., 1 

 (lUOJ), No. 1, ])p. .'j.j-56). — Sunnnaries are given of observations on rainfall from 

 July, 1891, to June, 1902, inclusive, and on shade temperature during the 15 months 

 ended SejitemlKT .".O, 1902. 



Meteorological report of the State of Florida for the year 1901, A. J. 

 Mitchell [Rpt. Comr. Agr. Florida, 1901 and 190J, pp. 230-:J35) . — This is a report 

 by the director of the Florida section of the climate and crop service of the U. S. 

 Weather Bureau on temperature, precipitation, cloudiness, wind movement, dates of 

 first and last frosts, etc., at a large number of places in the State. The mean tem- 

 perature during 1901 was 68.8° F., the precipitation 58.47 in. ; the means for 10 years, 

 including 1901, wei'e 70.6° and 52.73 in., respectively. 



Meteorolog-ical observations, W. B. Alwood ( Virginia Sla. Rpt. 1902, pp. 10, 

 11). — Tables are given which show monthly averages of observations at Blacksburg, 

 Va., on temperature, precipitation, direction of wind, and cloudiness for the calendar 

 year 1902; and monthly means of temi)erature and preciiiitation during 10 years 

 (1893-1902). The mean temperature for the year ended December 31, 1902, was 

 52° F., tlic precipitation 33.78 in. 



Meteorological observations on Ben Nevis, A. Buchan et al. {Rpt. British 

 yl.s.soc. Adv. Sci., 1901, pp. 54-60). — This is the report of the committee of the associa- 

 tion appointed to cooperate with the Scottish Meteorological Society in making 

 observations at the two Ben Nevis observatories, and gives summaries of observations 

 during 1900 on pressure, temperature, rainfall, sunshine, cloudiness, wind movement, 

 and casual phenomena. 



Meteorological observations at the agricultural-chemical experiment sta- 

 tion of Breslau, B. Sciillze (.hihrcxticr. Thill. Ai/r. ('Iu'ju. ]'erx. St(d., I'mrin: Scldr^icn, 

 1901-2, pp. 5, 6, tables 15). — Detailed daily, monthly, and annual sunnnaries are 

 given of observations on pressure, temi)erature, humidity of the air, sunshine, wind 

 movement, and rainfall for tlie period from January, 1901, to March, 1902, inclusive. 



On the seasonal variation of the atmospheric temperature of the British 

 Isles and its relation to wind direction, W. N. Shaw and R. W. Cohen {Rpt. 

 British Assoc. Adv. Sci., 1901, ]/]>. 55S-5H0). 



On the effect of sea temperature upon the seasonal variation of air tem- 

 perature of the British Isles, W. N. Shaw {Rpt. British .l.s.toc. Adv. Sci., 1901, pp. 

 500,561). — An analysis of oliservations on atmospheric temperature "shows that 

 there is a considerable lag in the occurrence of the seasonal variations of temperature 



