METEOROLOGY WATER. 15 



nnd elevation is traced. DisintegrMtion of rocks Las apparently proceeded more 

 rapidly in areas of low jirossure and tbns prodnced lower reliefs. 



On the diurnal heat exchange in a layer of snow on the ground, T. Okad.v 

 (Tokyo Hug. But. Kizi [I'ruc. Toktio Math. Phys. Soc.'\, 2. ser., J/ (1908), Xo. IS, 

 pp. 358-367; abs. in Bcibl. Ami. I'liys., 33 {1909), No. 231), p. 7)33).— Hourly 

 observations on temperature at the surface and at depths of 5, 10, 20, and 30 

 cm. in snow during 8 days in February, 1907, at two places are recorded. At 

 a depth of oO cm. the daily temperature variation was only 0.4° as compared 

 with 19° on the surface. The heat exchange at this depth was 12 gram-calories 

 at one place of observation and 20 at the other, corresponding in a general way 

 with those found by Homen in sand and moor soils. The exchange on cloudy 

 days was about half that observed ou clear days. 



Monthly Weather Review (Mo. Weather Rev., 38 {1910), Nos. 1, pp. 1-168, 

 figs. 11, charts 33; 2, pp. 169-328, fig. 1, charts 33).— In addition to the nsu:il 

 climatological summaries, weather forecasts and warnings for January and 

 February. 1910, river and flood observations, lists of additions to the Weather 

 Bureau library and of recent papers on meteorology and seismology, a con- 

 densed climatological summary, and climatological tables and charts, these 

 numbers contain the following special i^apers: 



No. 1.— The Weather and the Plant Pathologist, by D. Reddick ; Effects of 

 Low Temperatures on Citrus Trees and Fruits (illus.), by A. J. Mitchell: The 

 Topography and Rivers of Lower Michigan (illus.), by C. F. Schneider: Work 

 Undertaken at the Fremont Forest Experiment Station in Climatology and 

 Forestry (illus.), by L. H. Daingerfield ; Relation of the Farmer to the Weather 

 Bureau, by L. A. Merrill; Precipitation, Run-off, and Evaporation in the Owens 

 Valley (illus.), by C. H. Lee: The Owens Valley and the Los Angeles Aqueduct 

 (illus.), by A. B. Wollaber; and Floods in Southern California (illus.), by 

 A. B. Wollaber. 



No. 2.— Snowfall of the Winter, 1909-10, in New York, by G. W. iNIindling: 

 Topography and Drainage — West Shore of Lake Michigan, by H. B. Hersey : 

 Evaporation and Precipitation Measurements at Provo, Utah, by J. L. Lytel ; 

 Studies on the Phenomena of the Evaporation of Water over Lakes and Reser- 

 voirs, V and VI, by F. H. Bigelow ; and Report on Evaporation at Birmingham, 

 Ala.. 1909 (illus.), by W. F. Lehman. 



Meteorological summaries for the year 1908 {KentucL-y Sta. Rpt. I'JiOS. pp. 

 50.'i-.')0ii) . — Sunnnaries are given of observations at Lexington, Ky., on tempera- 

 lure, pressure, precipitation, cloudiness, and wind moveuient. 



Division of meteorology, N. Helme {Rhode Island Sta. Rpt. 1909, pp. 173- 

 189). — Observations at Kingston ou temperature, prjecipitation, prevailing winds, 

 and general character of the weather are given for each month of the year 

 ended June 30. 1909. The mean temperature for that period was 49.3° F., the 

 lirecipitation r)l.L' in., and the number of clear days 149. 



The weather of 1909, D. V. Lanory {Rpt. Agr. Nciv Bruiisnnrk, 1909. pp. 

 11-18). — Summaries of observations on sunshine and temperature at Frederic- 

 ton and other places in New Brunswick are given. 



Meteorology {New Zeal. Off. Yearbook, 1909, pp. y/.97-50.'/).— Observations ou 

 temperature, atmospheric pressure, rainfall, and wind at 15 stations in New 

 Zealand during 1908 are tabulated. 



Meteorological records {Victorian. Yearbook, 29 {1908-9), pp. .')88-591). — 

 Tables show the average rainfall of 1906, 1907, and 1908 in each of 26 districts 

 of Victoria, Australia, as well as the principal meteorological elements for the 

 year 19(t.s as compared Willi the average for r>2 years, and averages and ex- 

 tremes of climatic elements for the seasons and for the met(>orological year as 

 deduced from the records obtained at the Melbourne Observatory, 



