CLIMATOLOGY EVAPORATION. 



17 



Table III. — Maximum, 



minimum, and mean temperatures for 1909 m the 

 region of San Antonio, Tex. 





Maximum. 



Minimum. 





Station. 



Date. 



Tem- 

 pera- 

 ture. 



Date. 



Tem- 

 pera- 

 ture. 



Mean. 



Austin 



Aug. 19 

 ...do 



°F. 

 102 

 106 



107 

 109 



Jan. 11 



...do 



Jan. 12 

 Feb. 16 



°F. 

 19 

 23 

 14 

 14 

 21 

 23 

 IS 

 11 

 16 

 20 



°F. 

 67.9 





72.0 





Aug. 18 

 Aug. 19 

 Aug. 20 

 Aug. 18 



...do 



...do.... 

 ...do 



66.1 









109 j Jan. 12 

 107 ! Feb. 16 

 107 Jan. 12 



104 ...do 



112 ...do 



104 i Jan. 11 



71.2 



Falfurrias 



Flatonia 



Fredericksburg 



74.1 

 70.5 

 66.8 

 67.4 



Hallettsville 



Aug. 20 

 Aug. IS 

 Aug. 19 



Aug. 18 



Aug. 19 

 ...do 



71.0 





108 

 105 







Kerrville 



Feb. 16 



11 



} » 



19 

 20 



} * 



20 



} » 



15 



} I 



66.6 





in - /Jan. 12 

 100 (Feb. 15 

 105 Jan. 12 



108 Dec. 19 

 lin '/Jan. 12 

 110 ,\Feb. 16 

 107 Jan. 12 

 in , /..do.... 



100 jtFeb. 15 



109 Jan. 12 

 lin (Jan. 13 



110 \Fel». It) 



101 I Vn. IS 





New Braunfels 



69.5 



Rossville 



72.1 



Sabinal 



Aug. 4 

 Aug. 20 



Aug. IS 

 ...do 



72.0 





70.3 



San Marcos 



68.4 



Taylor 



68.0 



Uvalde 



...do 



71.6 





...do 



71.0 













The month of August was marked by excessive heat, some localities 

 showing a temperature as high as 110° to 112° F. The continuance 

 of the high temperature for several days following or subsequent to 

 the maximum recorded was general for the entire territory. The con- 

 tinued high temperatures and the lack of the customary amount of 

 rainfall caused a very considerable decrease in crop yields. Through- 

 out the area cotton did not make half a crop, many fields of corn were 

 a total failure, and other vegetation suffered in a corresponding 

 degree. 



EVAPORATION. 



The relative total evaporation for the vicinity of San Antonio is 

 high, with a rate between that of a desert center and a deciduous 

 forest. 



Table IV shows the average daily evaporation in inches for the year 

 1909, and the first three months in 1910, at the San Antonio Experi- 

 ment Farm. The data were obtained from Mr. C. S. Scofield, who 

 recorded the daily evaporation from an open-air tank. 

 100833°— Bull. 226—12 2 



