138 



GROWTH OF PLANTS. 



The same farther advanced. a, the central part of the embryo 

 twisted ; b, the neck ; c, the first radicle -, d, the sheath. 



The same farther advanced. a, the central part of the embryo : 

 b, salient point of the radicle with its pith ; c, d, the stem and leaf 

 of the young plant ; e, the root sheath j /, side rootlets ; g, g-emlet 

 sheath ; h, neck or dividing line between the root and the stem. 



