Microscopical E s s a ys. 



485 



figure, and in fub fiance membranaceous and tranfparent ; in the 

 midft ofthis fubftance feveral filial 1 globes may be perceived; 

 each of thefe are fmaller animalcula, which have alfo their 

 diaphanous membrane, and contain within themfelves ftill fmaller 

 generations, which may be diftinguilhed by the affiftance of very 

 powerful glafTes. The larger globules may be feen to efcape 

 from the parent, and then increafe in fize, as we have already 

 obferved, 



22. Volvox Morum. 



Vol vox membranaceus orbicularis, centro moleculis fphaericis 

 viridibus. Membranaceous orbicular, with fpherical green mole- 

 cules in the center. 



This animal culum has fome Tefemblance to the volvox uva, 

 but is fufBciently diftinguifhed by the furrounding bright orbicular 

 membrane. The middle part is full of clear green globules. 

 The globules feldom move, though a quivering motion may 

 fometimes be perceived at the center. It has a flow rotatory mo- 

 tion, and is found amongft the lemna, in the months of October 

 and December. 



23. Volvox Uva, 



Volvox globofus, moleculis fphaericis virefcentibus nudis. 

 Globular volvox, compofed of green fpherical globules, which 

 are not inclofed in a common membrane. 



This 



