watj:r — SOILS. 339 



sun ^^pots at Greenwicli are given, which show "less northerly wind about maxima 

 tlian about the adjoiniiiij; minima [sun spots]." 



Meteorological observations, C. B. RinciAWAY ( Wijomhuj Sta. lipt. 1902, pp. 62, 

 6:i). — Asunnnaryof observations at Laramie, Wyo., on temperature, relative humid- 

 ity, dew-point, atmospheric pressure, precipitation, evaporation, and direction and 

 velocity of the wind during the year 1901. 



Comparison of temperature and rainfall of 1900 with records of previous 

 years, E. R. Demain {Pennsylvania Dept. Agr. RpA. 1901, i)t. 1, pp. 680-683). — A 

 monthly summary is given of observations at Harrisburg, Pa., during each month of 

 1900 on pressure, temperature, precipitation, humidity, dew-point, cloudiness, vapor 

 pressure, and wind movement. The average temperature and rainfall for 1900 and 

 for 11 previous years are also given. The mean temperature for the 12 years was 

 52.2°; for 1900, 54.;^° F. The average rainfall for the 12 years was 38.44 in. ; for 1900, 

 28.94 in. 



The decrease of temperature with altitude, M. Moreno y Anda {Mem. y Rev. 

 Sor. Cieiit. "Antonio Alzate," 17 {1902), No. 1-2, pp. 53-61). 



A study on the diurnal variations in the meteorological elements of the 

 atmosphere, L. Teisserenc de Bort {Compt. Rend. Acad. Set. Paris, 134 {1902), No. 

 4, pp. 25S-256, Jig. 1). — The author reports the results of observations by means of 

 captive kites and balloons on the daily temperature variations in the atmosphere 

 over Paris at a height of 1 1 kilometers during the period from January 27 to March 



1, 1901. 



Hail shooting in lower Austria, 1900-1901, J. von Jablanczy {Das Hagel- 

 tcetterschiessen in NiederosterreicJi, 1900-1901. Vienna: Niederoster. Landes-Austichusses, 

 1902, jyp. 55, pis. 5, figs. 4, charts 4)- — The conclusions reached are in effect that the 

 results of hail shooting have not been conclusive, although apparently effective in 

 many cases when carefully done. Further studies are considered necessary to deter- 

 mine the practicability of the method and directions are given for the systematic 

 application of the method. 



Firing to prevent hail, PI Vidal {Compt. Rend. Acad. Sci. Paris, 135 {1902), No. 



2, pp. 92, 93). — A summary of observations tending to prove the effectiveness of the 

 method. 



Fog studies, A. G. McAdie {Amer. Inventor, 9 {1902), No. 14, pp. 209-211, 214, 

 figs. G). — A l)rief account of studies made in the vicinity of San Francisco, mainly on 

 Mount Tamalpais. 



Short period solar and meteorological variations, N. and W. Lockyer {('oinjit. 

 Rend. Acad. Sci. Paris, 135 {1902), No. 8, pp. 361-364, figs. 2). 



The atmosphere, J. W. Lee {Queensland Agr. Jour., 11 {1902), No. l,pp. 50-52). — 

 A In-ief i)opular discussion of properties of the air, especially as related to the soil and 

 the best means of securing proper aeration of the soil through cultivation. 



A new organic gas of the atmosphere, H. Henriet {Compt. Rend. Acad. Sci. 

 Paris, 135 {1902), No. 2, pp. 101-103). — The occurrence in small amounts in the air 



of a formiamid with one replaceable hydrogen (HCON^ R/^^ reported. 



Verification of the law of barometric heights, W. de Fonvielle ( Compt. Rend. 

 Acad. Sci. Paris, 135 {1902), No. 8, p]>. 335, 336). 



Observations on the climatology of Mexico, T. L. Laguerenne {Mem. y Rev. 

 Soc. Cient. "Antonio Alzate," 17 {1902), No. 1-2, pp. 4S-51). 



WATER^SOILS. 



Experiments in evaporation, C. B. Ridgaway ( Wyoming Sta. Bid. 52, pp. 43-55, 

 fig. 1). — This is an account of observations on the rate of evaporation and rise of 

 alkali in cylinders oi soil 25 in. long and 6 in. in diameter, in which the water was 

 kept at a certain level by ;nibirrigation, and on evaporation from a water surface. 



