CEREAL EXPERIMENTS AT DICKINSON, N. DAK. 



tion. These ratios for the different years compared with the average 

 ratio for the entire period offer an excellent basis for judging the 

 seasonal conditions under which the experiments reported in this 

 bulletin were conducted. 



2.& 

 2<S 

 <S7 

 2.6 

 «?..$- 

 2.-9 

 2.3 

 2J2 



2./ 

 2.0 



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 /.S 

 /.-& 



S.3 

 /-£> 

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/.O 

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 .& 

 7 



G 



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Fig. 2. 



o^/V. /K£ A»?M S?/??. /7/ty <y6/A/f <St//-r ^IC/G. S&&7T OC7T /VOIS 0£C, 













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-Graph showing the average monthly precipitation for the 22 years from 1892 

 to 1913, inclusive, at Dickinson, N. Dak. 



The anemometer used at the Dickinson substation was not ob- 

 tained until June, 1908, and for that reason the records of the wind 

 for 1907 and for May, 1908, are not available. Complete records 

 for April were not taken except for the years 1912 and 1913, when the 

 averages were 8.4 and 9.4 miles, respectively. Since June, 1908, a 

 complete record of the wind during four months of the growing 

 season has been kept. The anemometer stands next to the evapora- 

 tion tank at a height of about 2 feet from the surface of the ground. 



