166 Nebraska Agricultural Exp. Station, Research Bui. 6. 
acclimatized to the relatively dry soil and atmosphere of western 
Nebraska. These varieties had been grown for many years in 
their respective localities. Very fortunately the average date of 
ripening was practically the same for all four varieties, so that no 
effect of difference in length of growing season need be con- 
sidered. The yield and water requirement may be summarized 
as follows: 
Description 
Rocky Mountain Dent from New York 
Wood's White Dent from New York 
Average 
Calico from western Nebraska 
Martens' White Dent from western Nebraska 
Average 
Water 
Dry 
require- 
matter 
ment 
Grams 
Grams 
412 
268 
501 
250 
456 
259 
437 
260 
333 
252 
385 
256 
It would appear that the plants have developed no character- 
istics as a result of acclimatization which would cause them to 
differ in their water requirement. 
DIFFERENCE IN GROWTH HABITS. 
The object of this test was to compare early, medium, and 
late varieties, which might also be described as small, medium, 
and large. Three varieties grown in the vicinity of Lincoln, Nebr., 
were selected, namely, Pride of the North, University No. 3, 
and Hogue's Yellow Dent. The varieties did not differ as much 
in their growth in the potometers as had been expected. The 
results follow: 
Dry 
Water 
Date 
Description 
matter 
require- 
ripe 
Height 
ment 
Grams 
Grams 
Inches 
Pride of the North 
446 
230 
Aug. 24 
94 
University No. 3 
473 
285 
Sept. 1 
98 
Hogue's Yellow Dent 
558 
272 
Sept. 2 
114 
The data suggest that the Pride of the North corn used in 
this test was very efficient. The test will be repeated for a number 
of years to confirm the results. With Pride of the North corn, 
the low water requirement per unit dry matter was apparently 
