82 On the development of the Spora? of Anthoeeros Icevis. 



a deep brown colour, and a yellowish tint is disseminated 

 also at the same time on the rest of the cellule, which pre- 

 viously was perfectly diaphanous ; we then see that the disk 

 passes insensibly by its circumference into a mucilaginous 

 substance, which covers internally the whole mother-cellule, 

 which seems to coagulate by the action of iodine, and which 

 presents, as it were, the appearance of a membrane de- 

 taching itself in part from the mother-cellule, the mem- 

 brane of which remains perfectly unchanged in colour. The 

 mutations observed in the course of development affect first 

 chiefly the mucilaginous disk. This disk indeed becomes 

 successively dilated on its borders, so as to cover very soon 

 the half or more than the half of the nucleus (fig. 2 and 6) ; 

 at another time it manifests the form of a transversal band 

 (fig. 7) ; with this augmentation of volume it undergoes ano- 

 ther remarkable change — the green granular mass augments, 

 the granules become more apparent, and commence at the 

 same time to separate in a manner, more or less evident, 

 into two parts placed one beside the other, which at this 

 time are rarely completely separated, but which generally 

 are in contact by their borders, or are in connection by the 

 interposition of a kind of bridge (figs. 2, 3, 5, 6). This 

 green mass is not exactly circumscribed at its circumference, 

 it disappears in a colourless mucilaginous mass, very finely 

 granular, and it is the transparence of this which precludes 

 us from examining it more in detail. 



This substance does not manifest itself under the form of 

 a homogenous contiguous membrane, but it forms meshes of 

 greater or less magnitude, circular, or angular (fig. 2, 9). 

 On seeing this organization we could with difficulty refrain 

 from the opinion that we had before our eyes a cellular 

 membrane, the cells of which were formed of a tender, 

 mucilaginous, granular mass, and that the cavity of these 

 cellules was a simple vacuum in this mass, like the vesicles 

 of froth ; but as on turning the mother-cellule we see on 



