120 EXPERIMENT STATION RECORD. [Vol.13 



January 20 to 25, 1920, with lleTnarks on Forccastinu; (illus. ), by C. L. Meisin- 

 ger; Demoralization of Traffic in New York City by Snow and Sleet; Tremen- 

 dous Snowstorm in Palestine, February 9-11, 1920, by O. A. Glazebrook ; Note 

 .on Deep Northeast-Component Winds Observed January 27-31, 1920 (illus.), 

 by S. Gottlieb ; Blizzards and Chinooks of the North Dakota Plains, by F. J. 

 Bavendick; Weather Forecasting (illus.), by H. H. Clayton; Relation of Winds 

 to Temperature in Central Ohio (illus.), by H. H. Martin (see p. 118) ; Altitude 

 Determinations Based on Barometric Readings (illus.), by H. G. Corntliwaite ; 

 Comparison of Snow-board <ind llaingauge-can Measurements of Snowfall 

 (illus.), by R. E. Horton; and Influence of the Wind on the Movements of 

 Insects, by W. E. Hurd (see p. 157). 



Weather review for 1916 and 1917, H. D. Edmond {Connecticut Storrs 

 Sta. Rpt. 1916-11, pp. 471-483, fig. i).— Observations at Storrs, Conn., on tem-j 

 perature, precipitation, and length of growing season, are summarized in notes' 

 and tables. 



The year 1916 was characterized by the longest frostless period recorded at 

 this place during 30 years, ] 888-1917, namely, from April 11 to October 18, 190 , 

 days. The mean annual teuii»erature of 1917 was 45.1° F., 2.21° below the ^ 

 30-year mean. The rainfall of that yetir was 3.81 in. below the 30-year mean -J 

 of 43.98 in. The frostless period was 149 days. The mean annual temperature I 

 for the 30-year period has been 47.33°. The highest temperature was 99°., 

 July 3, 1912, the lowest -17° February 14, 1914, and December 30, 1917. The* 

 shortest frostless period recorded was 131 days, from May 24 to October 2, | 

 1907. The average date of last killing frost in spring has been May 3, of thet' 

 first killing frost in autuuui, October 10. The greatest annual rainfall was 

 GG.51 in. in 1901, the least 33.33 in. in 1894. 



Climatic contIition.s, C. R. Letteek {U. S. Dcpt. Ayr., Dept. Circ. 73 (1020), 

 pp. 5-1). — Observations at the San Antonio (Texas) Experiment Farm, on 

 temperature, killing frosts, precipitation, evaporation, and wind velocity, 1907- 

 1918, are summarized and briefly discussed. 



The average temperature of the year 1918 was 68.5° F. The lowest tempera- 

 ture in the history of the farm, namely 9°, was recorded January 11. Several 

 other cold spells occurred during the year, which " killed to the ground such 

 subtropical fruits as oranges, pomegranates, figs, and olives. Even citranges 

 were severely damaged by freezing. . . . Canada field peas were killed out com- 

 pletely, and winter oats were damaged rather severely by frost on two occasions. 

 On the other hand, no late freezes occurred in the .spring and a heavy crop of ; 

 peaches and plums was set." The last killing frost in spring occurred February j 

 21 ; the first in the fall, November 30. 



The total precipitation, 27.06 in., was somewhat higher than the average, 

 24.63 in., but the rain was so distributed as to be unfavorable for crop produc- 

 tion, the winter being very dry and the soil consequently deficient in moisture 

 at the opening of the crop season. " The total evaporation from a free-water 

 surface was 69.84 in. This was .somewhat above the average of 68.36 in. for 

 the 12-year period from 1907 to 1918, inclusive." 



Meteorology report for 1918, F. E. Hepner (Wyoming Sta. Rpt. 1919, pp. 

 160-163). — Monthly summaries of observations at Laramie, Wyo., on pressure, 

 tempei-ature, precipitation, humidity, wind, and cloudiness, are given. 



The mean temperature of the year was 41.5° F., slightly above the normal. 

 The mean temperature of June was 7.7° above the normal, and was the highest 

 ever recorded at this place. " November was abnormally cold. April was 

 colder than normal, so that agricultural operations were somewhat delayed. 

 . . . The last freezing temperature in the spring occuri-ed on May 20. A 



