464 
Journal of Agricultural Research 
Vol. XIV, No. II 
Table VIII .—Weather conditions in IQI2 at the Nebraska Experiment Station preceding 
the various samplings 
Date of 
sampling. 
Fields sampled.a 
Weather conditions of interval since previous sampling. 
Apr. 4 
J.. 
The preceding three months had been colder than 
S 
F-C. 
normal, with a normal amount of precipitation. 
Frost had disappeared, except a little within the sur¬ 
face, 6 inches of T. All the precipitation of March 
(2.06 inches) had been in the form of snow. 
23 
J. 
Normal weather; 1.84 inches of rain since Apr. 5, 1.71 
24 
F-C. 
inches of this being on the 2oth-2ist instant. 
May 25 
J and F-C. 
Very dry month, with only 0.97 inch in seven light 
showers. Average temperature and wind velocity not 
far from normal, but with an excess of sunshine. 
27 
S. 
0.10 inch rain on 26th. 
June 1 
J and F-C. 
A dry, hot, windy week, with a hot wind on the 26th. 
A rain of 0.50 inch had ended a few hours before the 
samples were taken. 
14 
J, F, and S. 
A dry, cool, cloudy fortnight, ending in a rain of 2.71 
inches on June 12-13. ' 
July 9 
S. 
An almost cloudless, rainless three-week period, with 
very dry atmosphere but normal temperatures. 
IO 
F. 
A shower of 0.24 inch late in the day before. 
II 
F and S. 
In forenoon 0.81 inch of precipitation, much of it in the 
form of hail. Samples taken in afternoon. 
24 
j. 
Temperatures, wind, and sunshine only slightly above 
normal, but rainfall only 0.72 inch, with the last 
(0.25 inch) on the 20th. 
29 
30 
I** and S.. 
0.75 inch of rain on July 26-27. Other factors normal. 
Aug. 1 
C and S___ 
Normal weather. No rain. 
3 
C, F, M, andS.. 
Cool, calm, cloudy; 0.04 inch of rain on Aug. 2. 
5 
M and S. 
Cool weather; 1.30 inch of rain earlier in the day. 
6 
C, F, and M. 
Normal weather. No rain. 
7 
C and F. 
Normal weather; 0.04 inch of rain. 
9 
C, F, M, andS.. 
Cool and cloudy, with 0.07 inch of rain on the 8th. 
12 
C, F, and M. . . 
Normal weather. No rain. 
16 
C, F, and M. 
Cool and cloudy, with 2.11 inches of rain during the 
night preceding. 
21 
C and M. 
Weather almost normal, with 0.21 inch of rain on the 
19th. 
23 
C, F, and M. .... 
Temperature and wind normal, but no rain and skies 
almost cloudless. 
26 
C, F, M, and S.. 
A continuation of the preceding, except somewhat 
warmer. 
28 
C, F, and M. 
A continuation of the preceding. 
30 
F an d M. 
Do. 
a F=»fallow field; C*= cornfield; F-C*= cornfield before corn plants were large enough to have an appreciable 
effect upon soil moisture; J and M= grass fields; S= ex posed subsoil. 
Field J had been in bluegrass and used as a pasture for many years. 
The amount and distribution of nitrogen in the first foot of this (Table I) 
were very similar to that in virgin prairies near by; the chief difference 
lay in the first inch, in which the bluegrass field showed the higher values. 
As this field was not under the control of the Experiment Station, and the 
frequent samplings were interfering with its use, it was found necessary 
at the end of July to abandon it. For the continuation of the study 
