1^2 ANIMALCULA OF INFUSIONS. V 



complete animalcula equalling the fize of the 

 whole. The vortex never difcontlnues durinir 



o 



divifion: minute fpines proceed from the cleft as 

 it gradually advances, which, encreafmg in length 

 and thicknefs, in fome time are as large as the 

 old. Two well formed hedgehogs are produced 

 by divifioln of the firfh fpecies ; and two hemi- 

 fphreres armed with fpines by that of the fecond. 

 A confiderable period is required for completing 

 the reparation. 



Thefe being the mod fmgular modes of longi- 

 tudinal divifion, I have thought it of confequence 

 to enter on fome detail. Many fmiilar propaga- 

 tions lefs worthy of recital are omitted ; and I 

 prepare to relate nev/ methods of multiplication- 

 by divifion of the body into parts. A fmgularity 

 is very frequently to be feen in an infufion of 

 "tremelia.. Two minute pellets, attached together 

 by many continued points, traverfe the fluid in- 

 sn irregular courfe, PI. i. fig. 8. M. We can- 

 not be miftaken if we fuppofe this an animal pre- 

 paring to divide : in fact it is fo ; but one would 

 be egregiouHy deceived if he formed an opinion 

 of what v/as to happen here. Judging by othsr 

 animalcula, we jfhould imagirie it had hardly be- 

 gun, and that the cleft would encreafe till the 

 animalcula remained attached only by a point. 

 It is otherwife ; for in the twinkling of an eye, 

 one pellet feparates from the other in fpite of the 



apparent 



