The Fixation op Nitrogen. 71 
from the north end, on October 11, 1909. The surface at this time 
showed nothing unusual as a rainfall of 0.83 of an inch had fallen 
three days before, on the eighth of the month. The surface at this 
time was not muddy or wet. The sample from the southern part 
of the field, Laboratory No. 867, contained 2. 564 percent; the one 
from the north end contained 3.315 percent of material soluble 
in water. 
ANALYSES 
LXXXVII 
LXXXVIII 
Water-Soluble 
Water-Soluble 
laboratory 
laboratory 
No. 866 
No. 867 
Oet. 11, 1909 
Oct. 11, 1909 
Percent 
Percent 
Calcic sulfate . 
. 28.672 
32.729 
Magnesic 'sulfate . 
. 14.156 
11.468 
Potassic sulfate . 
. 4.345 
3.495 
Sodic sulfate . 
. 28.779 
18.150 
Sodic chlorid . 
. 17.197 
28.256 
Sodic nitrate . 
. 6.435 
5.410 
Iron and Aluminic oxid . 
. 0.162 
0.070 
Silicic acid . 
. 0.254 
0.422 
100.000 
100.000 
We have in each of these samples essentially 0.16 percent of 
the top three inches of the soil consisting of sodic nitrate or its 
equivalent in other nitrates. Even beets have not grown in this 
soil for four years. 
Case No. 26 —This is as typical a location for seepage as I 
think can be found anywhere, not excepting Cases Nos. 22 and 23. 
The difficulty here has been unhesitatingly designated by the double 
term seepage and alkali by all local parties concerned up to the 
present time. The configuration of the country at this place is 
that of a flat tract bordered on either side by rising ground, the 
fiat section varying in width up to two hundred paces or more, 
through the central portion of which runs a drainage ditch three to 
four feet deep and about five feet wide. The portion of this higher 
strip of land in consideration is about twenty feet above the surface 
of the lower portion and from twenty-three to twenty-five fee: 
above the bottom of the drainage ditch. Persons really familiar 
with drainage problems in Colorado will not be misled by the ap¬ 
parently simple condition stated above. In this case borings showed 
that the water table, in the lowest portion of the cultivated area, 
was, in November, five feet below the surface, and that the water 
table at a distance of six hundred and fifty feet south of the drain¬ 
age ditch was only one foot above, while the surface of the ground 
at this point was six feet above the bottom of the ditch. As else¬ 
where stated we will subsequently show that the beet will thrive, 
producing a fair crop of excellent beets with the water table much 
