18 DRY FARMING IN RELATION TO RAINFALL AND EVAPORATION. 



All of the results are not, therefore, directly comparable. The meas- 

 urements at stations printed in heavy-faced type have been made 

 as a part of the physical investigations carried on at the dry-farming 

 stations of the Bureau of Plant Industry and can be directly com- 

 pared. 



Table I. — Evaporation from a tank during the six summer months from April to 

 September, inclusive, at various points in the United States. 



[The figures given represent the total number of inches evaporated during this period.] 



State. 



City or town. 



Num- 

 ber of 

 years. 



Date. 



Evapora- 

 tion. 



Tucson. 

 Yuma. . 



California. 



Calexico 



Kingsburg Bridge. 



Lakeport 



Lake Tahoe 



Colorado. 



Kansas 



Massachusetts . 



Michigan 



Montana. 

 Nebraska. 



Nevada. 



Pomona 



Sweetwater 



Tulare 



Akron 



Fort Collins 



Grand Valley 



Rocky Ford 



Hays". 



Garden City 



Boston: 



Beacon Hill... 



Chestnut Hill. 



Detroit 



Monroe 



Thunder Bay 



Judith Basin 



Lincoln 



North Platte 



Fallon 



Reno 



1892-3-4 



1903 



1904 



1907 



1903-4 



1882-3-4-5 



1901,1902 



1900 



1901 



1903-4.. 



1889-90-91-92, 1897.... 



1903-4 



1908 to 1909, inclusive. 



1887 to 1902 



1901 



1901 



1907 to 1909, inclusive. 



1908 to 1909, inclusive. 



&57.8 

 C53.9 

 56.4 



<7 20.7 

 h 21. 6 



New Jersey. . 

 New Mexico . 



New Brunswick. 



New York 



North Dakota. 



Carlsbad . . . 

 Las Cruces . 

 Rochester.. 

 Dickinson. 

 Edgeley. . . 

 Williston. 



1861 to 1864, inclusive 



1863 to 1867, inclusive 



1862 to 1865, inclusive 



1909 



1899 to 1909, inclusive 



1907 to 1909, inclusive 



1908 to 1909, inclusive 



1894 «37.5 



1900 ?42.3 



1900- 1901 *29.1 



1901- 2 *29.9 



1899 



1899, 1900, 1901 



1907 to 1909, inclusive. 

 1907 to 1909, inclusive. 

 1909 



Estimated from 5 months' record. 

 ». 26. 



a 54.2 



56.0 



d 71. 8 

 e49. 2 

 Z25.3 

 21.1 



£2 44.4 



1 39. 

 d 56. 6 



45 

 j 29. 3 

 A 36. 5 



2 61.6 

 45.2 

 59.9 



m25.8 

 «28.6 

 o32.1 

 o30.9 

 o30.2 

 32.6 

 P34.8 

 41.3 

 51.0 



39.9 



29=5 

 «54.6 



«26.7 

 31.4 

 29.8 

 30.0 



a Arizona Agricultural Experiment Station Bulletin 27. 

 b Engineering News, vol. 51, p. 248. 

 c Water-Supply Papers, No. 133, p. 32. 

 d Engineering Record, vol. 51, p. 430. 

 e Water-Supply Papers, No. 81, p. 27. 

 /Idem, p. 32. 

 0ldem, p. 21. 



h First Annual Report Reclamation Service, 1902, p. 230. 

 2 Colorado Agricultural Experiment Station Bulletin 45, 

 j Fifteenth Annual Report Colorado Agricultural Experiment Station, p. 205. 

 A Report Irrigation Investigations, Office of Experiment Stations, 1901, p. 284. 

 I Idem, p. 31. 



m Transactions American Society of Civil Engineers, vol. 15, p. 606 (1888 omitted, the records for that year 

 not being complete). 

 « Idem, p. 618. 



o Report Chief of Engineers, U. S. Army, 1868, p. 978iMay 4 to October 5). 



V Nebraska Agricultural Experiment Station. Data furnished by Prol. E G. Montgomery. 



q Water-Supply Papers, No. 81, p. 22 (May 11 to October 30). 



r Report Irrigation Investigations, Office of Experiment Stations, 1900, p. 151 (May 4 to October 24). 

 * Report Irrigation Investigations, Office of Experiment Stations, 1901 , p. 353 (April 4 to November 30). 

 t Report Irrigation investigations, Office of Experiment Stations, 1902, p. 247. 

 "Idem, p. 31 (May 1 to November 11). 



v New Mexico Agricultural Experiment Station Bulletin 59, p. 43. 

 to Colorado Agricultural Experiment Station Bulletin 45, p. 27. 



188 



