22 
Colorado Experiment Station 
and cdiaracter of the salts held in solution. 
ANALYSIS OP WATER-RESIDUE, 
Laboratory No. 2371 
Wen 25 feet deep — Total solids 9025.0 
p. p. m. 
Percent 
Calcic sulfate 25.410 
Magnesic sulfate 26.937 
Magnesic carbonate 1.67S 
Magnesic chlorid 4.496 
Magnesic nitrate 21.978 
Potassic nitrate 0.558 
Sodic nitrate 13.525 
Sodic silicate 0.444' 
Manganic oxid (br) 0.289 
Excess sodic oxid 4.86S 
100.000 
DRINKABILITY OF THESE WATERS 
This class of data is really foreign to our present purpose, 
but the question which is brought up, is one so frequently pre- 
sented and the results of our observations are so disconcerting 
that a digression ma}^ be tolerated, especially as we have no- 
where found any more remarkable instances of the use of water 
for stock and occasionally for domestic purposes, that judging 
by all ordinary criteria we would unhesitatingly condemn as 
wholly unfit for either purpose, than these, and yet neither men 
nor stock, as a rule, die from their effects. I have a well-water 
that was used for both purposes, i.e., for both stock and do- 
mestic purposes, that carried 3815 p.p.ni. of total solids with 
51.95 p.p.m. of nitrogen in the form of nitrates. I saw a man 
take a very large draught of this water; he stated that to him 
it was an agreeable water; that he drank no other water when 
on the place. 1 do not think that there was any bravado in his 
drinking it. I have seen others drink very bad waters. 
In the following instances the animals, horses, were accus- 
tomed to the waters used, still 1 was surprised at the facts and 
the condition of the animals. 1 will cite but four instances of 
the many that 1 have met. In one case the water carries 12,577.0 
}).p.ni. total solids with 336.0 ]).p.m. of nitrogen as nitrates. 
Another 10,541.0 p.p.m. total solids with 142.0 p.p.m. of nitrogen 
as nitrates. On this ranch there is another Avell which is con- 
sidered a very good one. Its water carries 3,634.0 p.p.m. total 
solids and 171.0 p.p.m. of nitrogen as nitrates. Another water 
carries 10,170.0 p.p.m. total solids and 140.0 p.p.m. of nitrogen 
as nitrates. This water is pumped from a shallow well into a 
large tank. The owner is a man of intelligence, and there is 
an atmosphere of orderliness and thrift about his ])lace. I in- 
