712 EXPEKIMENT STATION RECORD. 



The influence of insolation on the temperature of different sides of a 

 valley, C. Buhrer (Bui. Sot: Vaiid. 8ci. Nat., 5. set'., 7/5 {1909), No. 165, pp. 

 207-212). — Observations iu a number of Swiss valleys are reported, shovping a 

 decided difference in temperature depending upon their situation with reference 

 to sunlight. 



Instruments for making' weather observations on the farm, D. A. Seeley 

 ( r. .S'. Dcpt. Ayr. Yearbook 190S. iip. Ji3S-.'i'i2, pi. 1, flgs. 2). — The simpler forms 

 of apparatus and methods for determining temperature, pressure, precipitation, 

 and dew-point are described, with a view to encouraging farmers to malie accu- 

 rate observations. 



Weather reports for Alaska, C. C. Geoegeson {Alaska Stas. Rpt. 1908, pp. 

 12-80). — Tabular summaries are given of the reports of the volunteer weather 

 observers of the Weather Bureau of Alaska on temperature, precipitation, and 

 general weather conditions during the year ended October 31, 1908. 



Meteorological record {New Hampshire Sta. Rpis. 1907-8, pp. 561-586). — 

 Daily, monthly, and annual summaries of observations at Durham, N. H.. on 

 temperature, precipitation, cloudiness, and direction of wind during the period 

 from July 1, 1906, to June 30, 1908. The mean annual temperature for the year 

 ended June 30, 1908, was 45.8° F., the precipitation 39.37 in., and the depth of 

 snow 30.5 in. 



[Meteorological observations at Wisley in 1908], R. H. Curtis {Jour. Roy. 

 Hort. Soc. [London], 35 {1909), No. 1, pp. -'/i-52, /(firs. 3).— This is a report of the 

 usual observations on temperature, rainfall, humidity, sunshine, and wiuds, 

 summarized by months, at the garden of the Koyal Horticultural Society. 



Meteorological observations {Statis. JaJirb. Dent. Reich, 30 {1909), pp. 

 Jf06, 407). — The average temperature, precipitation, humidity, and cloudiness 

 for each month of 1907 at a large number of places in the German Empire are 

 recorded. 



Rainfall observations {Mem. y Rev. Soc. Cient. "Antonio Alzate," 27 {1908), 

 No. 2, pp. 51-72). — Tables are given which show the daily and monthly rainfall 

 from 1901 to 1907 at two places in the State of Puebla, Mexico. 



On the sodium and the chlorin in river and rain waters, H. S. Shelton 

 {Chem. News, 99 {1909), No. 2583, pp. 253, 254; abs. in Chem: Ahs., 3 {1909), 

 No. 19, p. 2335; Chem. Ztg., 33 {1909), No. 86, Repert., p. 376).— It is pointed 

 out that the content of sodium and chlorin in river and rain water as determined 

 by ordinary analysis is an unreliable basis for geological and cosmological specu- 

 lations. It is necessary to determine the alkalis, particularly the sodium, with 

 a high degree of accuracy, directly and not by difference. Sodium and chlorin 

 should be separately determined. 



The mineral content of Illinois waters, E. Bartow, J. A. TJdden. S. W. Parr, 

 and G. T. Palmer ( Univ. 111. State Water Surrey Bui. 4, pp. ¥111+192, figs. 9).— 

 This bulletin treats in a very complete manner the geographic and physical and 

 chemical classification of the waters of Illinois, the methods used iu the exam- 

 ination of the waters, and the interpretation of the I'esults. As a result of the 

 large number of examinations reported the following standards for the interpre- 

 tation of the results of sanitary water analysis are suggested : 



