POT EXPERIMENTS WITH FERTILIZERS. Pacey; 
DISCUSSION OF THE EXPERIMENTS. 
On the following pages is given the discussion of the experi- 
ments with oats and Hungarian grass in 1898, with Hungarian 
grass, orchard grass and soy beans in 1899, and with soy beans 
in 1900. A number of other experiments besides these were 
made during the three years, but the growth in most cases 
was so poor that it was believed the results would be abnormal 
and therefore it would not be advisable to make the analyses. 
The oat experiments of 1898 comprised twelve pots; all the 
other experiments reported comprised sixteen pots. In each 
experiment, the total number of pots used was made up of an 
equal number of those with mineral fertilizer only and those 
with the one-third, two-thirds and full rations of nitrogen in 
addition to the minerals. All the pots of the same kind formed 
a group, the results for the individual pots in each group being 
averaged together. 
EXPERIMENT WITH OATS, 1898. 
This experiment included pots Nos. I to 12, with three pots 
fertilized alike comprising a group. In general the growth on 
the different pots was not so heavy in the case of the oats as it 
was on corresponding pots in the Hungarian grass and the 
orchard grass experiments described below. The crop was 
fairly uniform, however, on pots which were similarly fertil- 
ized with nitrogen. Samples were taken October 20, 1898. 
The crop was cut about an inch above the soil, and the total 
amount on each pot was taken for a sample. When the crop 
was thoroughly air-dry the seeds were separated from the straw 
and chaff, and later the two were analyzed separately. The 
results of this experiment are given in the table below. 
Oat seeds. —There was a gradual increase in the percentages 
of nitrogen and of protein in the crops of different pots in ac- 
cordance with the quantities of nitrogen supplied in the fertil- 
izer. ‘The increase in the percentage of nitrogen in the oat 
seeds was much more marked than the increase in yield. 
Oat straw.—With the exception of the crop on pot 6 the 
growth was quite uniform on all the pots which were similarly 
fertilized with nitrogen. Omitting the results from pot 6 the 
