HOW TO GROW GOOD CLOVER. 



135 



single pulse-seed, which is easily freed from its 

 wrinkled shell. 



in 



Pig. 33 a is a drawing of a fruit 

 of false burnet. The section b shows 

 it to be quadrangular, with a wing , 

 at each angle, and to possess two 

 seeds in each capsule. The cap- 

 sules are rather muricated (i. e. Fig - 33 - 

 furnished with short excrescences, and not regularly 

 wrinkled, like the sainfoin). Now the burnet is easily 

 separable from a sample of sainfoin, as the former 

 readily passes through the sieve ; but the objection 

 to sift it may be well understood when the bulk is 

 diminished by the amount of the burnet, and also 

 that of the smaller sainfoin seeds, which pass through 

 at the same time. 



The best plan, then, to pursue is to mill the sain- 

 foin seed, in which case its outer covering is removed, 

 and you simply have a sample of kidney-shaped pure 

 seed-like enlarged clover-seeds, in which the burnet 

 may be detected, because it will not mill, but simply 

 gets its wings broken off, so that the wrinkled two- 

 seeded capsule still remains. 



Now the fact of the burnet being a two-seeded 

 capsule is most important to be noticed, as, from 

 analyses we have made of dirty sainfoin crops, we 

 have estimated as follows : — 



