494 



LYCOPODIACE.-E. 



the only hyaline part ill defined ; many of the nucleary granules, of the 

 outer wall of capsule marked out : cells b. not separable. 



XYIIa. Development from the circumference of the mass towards 

 the centre, presents every degree of compound cells, in none do I see a 

 common membrane. Evolution of the cells is probably centripetal. 



Nitric acid reduced all these to one appearance, viz. a large nucleus 

 and beautiful hyaline membrane. 



XVIII. I would almost think that there are two kinds of bodies 

 formed during the intermediate period, for I find that numerous large 

 compound cells certainly do exist, chiefly round the parietes of the cell ; 

 containing globular incrusted nucleary cells, each distinct, while the rest 

 consists of the original compound cells, now all detached and distinct, 

 but of a different aspect, very grumous, with a nucleus. 



The primary parents do not exist at first, at least in the trilocular 

 fruits, however nucleary the appearance of cells may be in the centre of 

 the mass, from the grume in which they are imbedded. 



Afterwards these large incrusted globules contained indistinct cells, 

 they are very abundant, some are of large diameter, several times bigger 

 than the separated ones, and always at this period presenting a distinct 

 aspect ; some seem to be attached to the parent. 



They certainly appear to increase in number, while the distinct ones 

 seem to diminish, and however these may appear to assume the appearance 

 of division, the spores are really, I think, formed entirely from the cells 

 enclosed. 



Before the compound including cells make their appearance, the cells 

 are not uniform. They are grouped as before ; the groups either consist- 

 ing of grumous cells with a nucleus, or some of the outer ones have as- 

 sumed the incrusted appearance : nucleus without an enlargement of size, 

 is characteristic of those afterwards found contained in a membranous 

 bag. But even granting that these are the same, where does the mem- 

 brane originate. 



XIX. These represent what I take to be the passage of formation. 

 If the enlarged cells of the compound cells subsequently become en- 

 closed in bags, how are the abortive ones excluded, or are they vivified 

 by becoming enclosed ? 



1. Certainly there is no common membrane to any of these cells. 



2. Appear in many to be contained in cells, as if the enveloping 

 grume was being developed into a membrane. The contained grains 

 are similar to those outside. 



2a. It is remarkable, that the enlargement of the cell is always ac- 

 companied by the appearance of a hyaline membrane and distinct ap- 

 pearances of the nucleus. 3a. all cells detached, 3c. changed, Zb. un- 

 changed cell in nitric acid.] 



