64 The Colorado Experiment Station 
amount, 7.7 parts, is found in the case of beets grown on a plot 
which had received 160 pounds of potassic sulfate and 100 pounds 
sodic nitrate per acre. On the other hand, beets from plots which 
had received heavier applications than this contained less than beets 
grown on plots which had received no fertilization. The irregular¬ 
ity of the results does not admit of any definite conclusion. 
The apparent coefficient of purity for the beets from all of the 
plots ranged from 79.0 to 85.0 as they were harvested, and from 
79.0 to 86.0 for the samples as taken on 11 Oct. excepting one sam¬ 
ple which was very low. The plot on which this sample was grown 
had received a dressing of 120 pounds superphosphate and 50 
pounds sodic nitrate. 
The percentage of chlorin in the ash of the beets from these 
fertilized fields is high in comparison with the available data relative 
to the amount of chlorin in the sugar beet. According to Wolff 
quoted by Ruempler the average amount in beets prior to 1871 was 
0.04000, ten years later it had fallen to 0.03060 percent. The aver¬ 
age obtained at the Halle Experiment Station was nearly the same 
from 0.0260 to 0.0420. The maximum given by Ruempler for 
chlorin in fresh sugar beets is 0.242 percent, calculated on the basis 
of 80 percent water in the beet. In the six analyses previously 
quoted from Andrlik the maximum is 0.038 percent. In the Michi¬ 
gan beets we found 0.0029 and in our standard Fort Collins beets 
0.0194 percent, but in the beets grown on this land we find the mini¬ 
mum to be 0.124 and the maximum 0.246 percent of the fresh beet. 
The fact that our beets are apt to be rich in chlorin was shown 
by our earlier analyses, 1898, at which time mention was made of 
this fact. While manure in some experiments which we made 
clearly increased the amount of chlorin taken up by the beets, the 
high chlorin in these cases cannot be wholly attributed to the fer¬ 
tilizers used, for the beets from our check plot are as high in chlorin 
as those grown with fertilizers. The water soluble chlorin in this 
soil was, in the surface foot (three samples) 0.008, in the second 
foot O.OT2, 0.013 and 0.014, and in the third foot 0.021 and 0.015 
percent. These analytical results indicate not far from 1500 pounds 
of chlorin per acre taken to a depth of three feet, or about 2500 
pounds of ordinary salt. The molassegenic properties of sodic 
chlorid seems to be beyond question. This quantity of salt, if it 
has any value as a fertilizer for beets, was perhaps more than suffi¬ 
cient to be of the highest advantage. The extent to which soda 
salts were appropriated by the by the plants shows very plainly when 
we consider the composition of the pure ash in which we see that 
sodic chloril makes up from 23. to 32. percent of the total. 
The phosphoric acid in all of the samples except in the ash of 
the Michigan beet and in that of our standard Fort Collins beet is 
