20 Nebraska Experiment Station Research Bulletin 19 
made are compiled in Table 2 from the preceding charts. Strik- 
ing regional climatic differences will be noted. 
TEMPERATURE AND RAINFALL DURING 1915 AND 1916 
Tables 3 to 6 show the temperature and rainfall during the 
crop growing season for localities where corn types were studied. 
A knowledge of these conditions may help account for certain 
Table 5. — Mean Temperature During Four Spring and Summer 
Months in Regions Where Corn Adaptation Studies Were 
Located. 1915 . 
Location 
Mean Temperature 
May 
June 
July 
August 
Average 
County 
(1) 
Degrees F. 
(2) 
Degrees F. 
(3) 
Degrees F. 
(4) 
Degrees F. 
(5) 
Degrees F. 
(6) 
EASTERN NEBRASKA 
Kichardson 
61.6 
69.8 
72.8 
69.6 
68.4 
Washington 
58.4 
66.0 
70.0 
65.9 
65.1 
Thurston 
57.2 
65.6 
69.6 
65.2 
64.4 
Lancaster 
59.0 
67.2 
71.7 
67.9 
66.4 
Nuckolls 
60.0 
67.4 
72.4 
69.0 
67.2 
Average 
59.2 
67.2 
71.3 
67.5 
66.3 
CENTRAL NEBRASKA 
Kearney 
57.5 
65.6 
71.6 
68.6 
65.8 
Holt 
53.8 
63.1 
67.2 
66.4 
62.6 
Lincoln 
55.2 
63.8 
69.4 
68.2 
64.1 
Cherry 
52.7 
62.0 
67.6 
66.4 
62.2 
Average 
54.8 
63.6 
68.9 
67.4 
63.7 
WESTERN NEBRASKA 
Grant* 
Dawes 
Kimball 
52.7 
53.2 
51.8 
61.4 
61.6 
60.0 
67.0 
66.9 
66.5 
66.2 
68.0 
66.0 
61.8 
62.4 
61.1 
Average 
52.5 
61.0 
66.8 
66.7 
61.8 
*Temperature data in Grant County were not available for 1915, and data 
from Arthur County, bordering on the south, have been supplied. 
apparent inconsistencies in the comparative plant characters. The 
year 1915 especially was much wetter than normal. Relatively, 
the seasonal precipitation for Lincoln County in 1916 was unduly 
low, which accounts for the outstandingly low plant development 
there that year. 
