SECT. III. SPECIFIC EXAMPLES. 38$ 



the area of the upper portion of the scale. The 

 upright flap of the pocket is distinctly visible, 

 from which the true radicle may now be disengaged 

 with a little dexterity of manipulation, though only 

 by means of tearing the plantlet from the scale at 

 the collar. 



On the 4th, when the seed seemed to be quite 

 ripe, the green film after changing to a pale brown 

 had disappeared by insinuating itself into the inner 

 envelope, or adhering to it so closely as to be 

 separable from it only by scraping it off in small 

 fragments. The plumelet filled up the area of the 

 upper portion of the scale entirely. The rudiments 

 of the lateral fibres were now visible in the form of 

 small protuberances issuing from the collar, one on 

 each side the flap. And when the plantlet was cut 

 open at the collar, several small globules were dis- 

 coverable, which are perhaps destined to become 

 future stalks. The embryo and albumen were firm 

 and compact; and in the course of a day or two 

 the Wheat was cut down. 



SUBSECTION IV. 



The Hazel-nut. On the 30th of June, 1808, the 

 most advanced nuts were about one third of an inch 

 in length. When the nut was cut in two, theputamen, 

 which was of a greenish colour, but somewhat firm 

 at the apex, was found to contain the chorion, a 

 white and succulent mass, resembling the pith of 



