12 
Colorado Experiment Station. 
erts says of this result, “It is worthy of note that in this experiment 
the loss of potash was very slight in comparison with the phosphoric 
acid and nitrogen; in all of our other experiments the heaviest loss 
has been potash.” 
Director Peter Collier at the Geneva Station, N. Y. Bui. No. 23, 
New Series, with a well packed heap of cow manure containing 
3,298 pounds, found a loss of 60.6 percent of the potash in one 
year. 
Other experimental proof might be given but in almost every 
case where the manure is really exposed to the weather and not taken 
care of, the heaviest loss in a humid climate is the potash. 
No comparable experiments with sheep manure were found. 
The only experiments at our disposal in which sheep manure was 
used were those of Muntz and Giard as quoted by A. Herbert in an 
article in the Experiment Station Record. In these experiments 
the manure was exposed for a period of six months with a loss of 
25.04 percent of dry matter, ii.44 percent of nitrogen, 19.15 percent 
of phosphoric acid and 21.5 percent of potash. It is not clear from 
the article whether the manure was cared for or not, but one would 
surmise that it was probably packed in heaps in pits and the teach¬ 
ings pumped back on the pile. If this surmise be true, our condi¬ 
tions are not comparable, and the small losses recorded would be 
easily accounted for even though the climate of [France, where these ex¬ 
periments were conducted, is much more moist than ours. 
THE TWENTY-THREE SAMPLES OF SHEEP MANURE. 
We will now turn our attention to the samples of sheep manure 
which were collected during 1903 and 1904. As has already been 
stated the sheep, or rather lambs, were all fed for eastern markets 
on corn and alfalfa, with four exceptions, viz. Nos. 31, 32, 34 and 36, 
in which cases the sheep were pastured during the day and kept in 
corrals at night, the object being wool rather than the fat lambs. 
The winter of 1903-04 was an exceptionally favorable one for the 
collection of samples as there was almost no rainfall during that 
time and the samples can be compared without allowance being made 
for teaching. 
A Standard Analysis of Sheep Manure. 
In order to obtain a standard for comparison, a large number of 
analyses of sheep manures, most of which are given in Storer’s work 
on Agriculture, were averaged and recalculated to a dry basis as 
follows: 
