i8 The: Colorado Experiment. Station. 
ANALYSES 
• XIV 
XV 
Calcic sulfate . 
Calcic chlorid. 
Magnesic chlorid . 
Potassic chlorid. 
Sodic chlorid . 
Sodic nitrate . 
Iron and Aluminic oxid. . 
Silicic acid .. . . 
Water-Soluble 
laboratory 
No. 1014 
Percent 
, . . 23.270 
. . . 17.550 
. . 15.930 
. . 4.044 
. . 35.432 
. 1.420 
. . 2.069 
. . 0.285 
Water-Soluble 
Laboratory 
No. 1071 
Percent 
25.022 
24.160 
17.420 
4.023 
24.268 
4.686 
0.162 
0.258 
100.000 
100.000 
This orchard was 
beginning 
to burn in 
the early part of 
June, 1911, earlier than in preceding years. 
Case No. 8— This is a young orchard set in 1908. The 
history of the ground as given to me is as follows: Prior to 1904 
the whole piece of land was productive; in this year a brown patch 
appeared and the land became unproductive. It was covered 
thickly with manure in 1904 and again in 1906. The conditions 
were not improved. In 1908 it was set to orchard and planted to 
beets. The trees did not do at all well in this area and some of 
them died. The beets came up very poorly; they were replanted 
twice and the stand was still very poor, the beets produced being 
over-grown and having large tops. My information is that the 
quality was poor. In my field notes mention is made of the fact 
that the land outside of this area appears as heavily charged with 
alkali as the area itself, but the owner asserted that this land was 
very productive and subsequent observations lead me to believe that 
the statement is correct. This land was irrigated ten or twelve 
times during the season, each time excessively in the hope that the 
"‘black alkali” might thereby be removed—to use the owner’s 
language: “I washed it till the soil was white.” I took a set of 
samples from this land in April, 1909. The soil is sandy loam 
with a more sandy subsoil. I dug to a depth of five feet, without 
further change in the soil and without striking the water table. 
This place is practically on the river bank where the soil section 
is sand lying on top of coarse gravel. The river bed is now from 
twelve to fifteen feet below the level of this land and the brown 
mealy soil occurs within fifty feet of the edge of the bank. It is 
scarcely possible to obtain better drainage conditions than these. 
This is, in fact, the reason for my making particular mention of 
this place. At first I thought that this condition was in general 
largely due to an excess of moisture, such an excess as to be of 
itself injurious to vegetation, but I do not find such to be the case. 
Orchards No. 5 and No. 7 are also on sandy loam soils and not 
adobe soils which retain water persistently. They are, however, 
