Fixation ot Nitrogen in Colorado Soils 43 
NITRIC NITROGEN IN SOIL IN EACH 40 ACRES ON EITHER SIDE OF 
NORTH AND SOUTH ROAD, 2 MILES EAST OF WELLINGTON, BEGINNING 
li/o MILE NORTH OF AND EXTENDING 41/2 MILES SOUTH OF WELLING- 
TON, TOGETHER WITH THE WELLS ON THE SAME ROAD. 
Nitric Nitrogen, p. p. m. Nitric Nitrogen, p. p. m. 
SOIL 
WELLS 
West 
East 
West 
East 
7.9 
10.8 
0.8 
8.4 
56.3 
134. 
7.7 
1.4 
85.4 
19.6 
101 
50 
13.1 
23.3 
36.9 
5.6 
81.2 
8.9 
298.7 
877.3) . . . 
, . . (336.0 
) 
(302.0 
1092.0 
746.6 
253.0 
15.9 
25.2 
21.0 
42.5 
1941.3 
690.7 
1040.7 
141.4 
) 
(296.8) 
"Well 280 ft. 
deep, none 
15.4 
16.3 
53.7 
28.5 
43.4 
23.8 
515.2 
52.3 
31.7 
858.7 
466.6 
Well 400 ft. 
21.5 
73.3 
610.0 
deep, none 
28.9 
17.7 
599.0 
9.3 
20.1 
830.7 
462.0 
134.9 
639.0 
387.3 
14.5 
The bigger features of this case present these facts. The 
higher lands surrounding the area in question are not unusually 
I rich in nitric nitrogen, that is, they carry less than 8.0 p.p.m., 
which is not sufficient to account for any accumulation of it. 
The rainfall is less than 15 inches and cannot effect much 
. washing. Even with irrigation, this amount of nitric nitrogen 
is not sufficient to show any effect upon the nitric nitrogen 
contained in the ground-waters. This is shown in all of the 
tables giving the nitric nitrogen in well-waters, especially in 
those from the Waverly district or on the Cheyenne Road south 
of Jacob Rosenberg’s. The drainage into the bad area is not 
I great and if there were a sufficient amount of it to justify con- 
1 sideration, the content of neither the soil nor the ground-waters 
of the surrounding lands in nitric nitrogen would account for 
: the amounts found, nor could any possible accumulation be ef- 
fected in the places where we find them. 
