90 



CULTUKE OF FARM CROPS. 



Fig. 1. 



which carries the leaves, and ultimately 

 the seed; and at the lower part the 

 radicle c, from which, on the seed ger- 

 minating, the roots proceed. On the 

 seed being placed in the ground under 

 circumstances favourable to its proper 

 germination, the radicle a, fig. 2, bursts 

 through its integuments, and lateral 

 rootlets begin to develop themselves 

 to the right and left. These rootlets 

 are but sheaths, which, at the early 

 stages of the germination of the seed, 

 cover the true root l>, fig. 2. These roots are elongated 

 for a greater or less distance without sending out lateral 

 branches or fibres; but these at last appear proceeding 

 from slight projections on the side of the roots. These 

 fibres, again, give rise to other lateral branchings out, and 

 are called fibrils. These developments take place in win- 



Fig. 2. 



Fig. 3. 



