18 COLORADO AGRICULTURAL EXPERIMENT STATION 
nearly as striking as the variations in their later development. 
Plate No. 16 shows early sprng development of plants No. 105 
and 106, in the spring of 1913 Plant No. 105 on the left, started very 
much earlier and more vigorously than plant No. 106 on the right. 
These two plants exhibited a striking contrast not only in the shape 
of the growing mass produced but in the character of their foliage. 
Plant No. 105 is a broad leaved, vigorous grower, and starts very 
early in the spring, and continues growing late in the fall. Plant No. 
106 starts slowly in the spring, has narrow, short leaves, and a very 
dark green color. By the first of June plant No. 105 had attained a 
height of 30 inches in 1913, arid plant No. 106 a height of only 18 
inches. Fom previous experience with this plant we would be war¬ 
ranted in concluding that it has practically reached as much develop¬ 
ment in the way of leaf growth as it will make during the season, 
while we can expect plant No. 105 to make a considerable further 
growth before it reaches seed maturity. 
Plate No. 17. 
Plant No. 24 (Plate No. 17) and Plant No. 25 (Plate No. 18) il¬ 
lustrate another set of contrasts Plant No. 24 in a very sparse stooler. 
