( 2*5 ) 
cattle, which, if left at liberty in the pafture, 
uniformly reject the ftraw on which the flower 
grow T s, devouring only the herb of the plant, 
fo that the feeds which efcape the fmall birds, 
ripen, fall to the ground, and renew their fpe- 
cies. Thofe grafles which are more liable to 
have their feeds deftroyed, or which, from the 
coldnefs of the climate they inhabit, cannot 
bring them to perfection, become viviparous, 
and perpetuate their fpecies by a bulbous pro- 
geny. The fimilarity of calyx, corol, and 
nectary, in the grafs genera, and the minute- 
nefs of their dimenfions, will frequently pre- 
vent their being accurately diftinguiflied from 
each other, till the ftudent is become familiar 
with the appearance of all thefe parts; and he 
will then find them not more difficult of in- 
veftigation than the fructification of many 
Other plants. 
Q 
EXPLANA- 
