168 STORRS AGRICULTURAL EXPERIMENT STATION. 
crop of grass was harvested in good condition, and a second or 
rowen crop was then produced from the same pots, but without 
a second application of fertilizer. Table 50 gives the data for 
this experiment. 
First crob.—The growth of grass seemed to be normal 
throughout the season. The samples of the first crop were 
taken July 1, 1899, when most of the heads were past bloom 
and the earliest plants were beginning to form seed. The total 
crop from each pot was cut off about an inch above the soil, 
then cut into pieces about a half an inch long and dried in the 
steam drier. 
The variation in weight of the total crop was small for alt 
pots of a group. The growth seemed heavy on all the pots, 
but was especially so on the pots of the group having the 
larger rations of nitrogen. On the pots with mineral fertil- 
izers there was a rather slender growth, pale yellow in color; 
on the pots with the smallest (one-third) nitrogen ration the 
growth was fairly heavy, with medium amount of leaf, and 
slightly pale green in color; on the pots with the medium 
(two-thirds) nitrogen ration the growth was quite heavy, 
quite thickly leaved at the bottom, and of good color; on 
the pots with the full nitrogen ration there was a heavy 
growth with leaves thick at the bottom and of dark green 
color. 
The average percentage of nitrogen in the crop from the 
pots on which the largest ration of nitrogen was used was 
more than twice as high as that in the crop from the mineral 
pots, where no nitrogen was used. ‘This, of course, affected 
in the same proportion the percentages of protein.. This ex- 
periment illustrates very forcibly the possibility of increasing 
the feeding value of our common grasses by the liberal use of 
nitrogenous fertilizers. 
Second or rowen crop.—The orchard grass rowen was sam- 
pled November 10, 1899. The pots had been under shelter 
since September 20. The grass was considerably dried and 
brown when harvested. Crop was cut off just above the soil 
and was cut into pieces about an inch long and dried. 
The second growth of orchard grass appeared to be nearly 
normal, although there were considerable differences between 
the groups of pots to which different quantities of nitrogen 
