SECT-HI. SPECIFIC EXAMPLES. 



part of an inch. It was surrounded with a clear 

 and transparent fluid -the amnios. In a nucleus 

 measuring one sixth of an inch, the embryo mea- 

 sured -. In a nucleus measuring one fifth, the 

 embryo measured -^. The surrounding substance 

 was now gelatinous. In some cases both the nuclei 

 seemed to be impregnated and were continuing to 

 thrive ; and it is known they do sometimes both 

 ripen, as may be seen in the course of cracking a 

 good many nuts. In the larger specimens the veins 

 were very conspicuous. 



On the 15th, many nuts had attained to nearly 

 their full size. In one specimen in which the 

 nucleus measured one fourth of an inch in length, 

 the outer envelope now full of veins was not easily 

 separated from the under envelope, though both 

 were easily separated from the cotyledons, which 

 measured about one fifth of an inch, having the re- 

 mainder of the amnios lodged between them at the 

 top, but still gelatinous and attached to the coats. 

 The plantlet measured about T V of an inch. 



In another specimen in which the nucleus mea- 

 sured about one third of an inch, the remainder of the 

 amnios^ which was still gelatinous, was now wholly 

 within the cleft of the lobes, and lodged in a sort of 

 hollow near the apex. 



In a third specimen in which the kernel seemed 

 nearly ripe, the amnios had totally disappeared, ex- 

 cept a thin and membranaceous film, which was 

 still separable from the cotyledons. The umbilical 



