102 



AXIMALCULA OF INFUSIONS. 1« 



put Into fcven different glafles, for the purpofe of 

 comparing wliat might happen in glalTes where 

 ther^ were originally no animakula, and where 

 lliere was one. But none either of one fpecies or 

 another ever appeared in the feven glaffes : and 

 T thought myfelf right in concluding, that the 

 1;:c(^nd animalcule derived its origin from the 

 r-r-n:. This might be in various ways ; whe- 

 ther the firfl had produced the fecond alive, or 

 laid an egg from which it came, or by dividing 

 in two. r\Iore frequent examination of the glaffes 

 was required for difcovering the truth. In half 

 an hour, I found " fomething new : two minute 

 pellets at the bottom of the glais, P Q^ Plate i, 

 h-^. 9. One was oval ; it moved from tim.e to 

 time ; and in moving changed its place. Alter- 

 nate motion and reft condnued an hour and a 

 third : then it w^as more frequent and entirely lo- 

 cal, the pellet beginning to fwim flowly through 

 the fluid. After the lapfe of fome time, its motion 

 was as confiderable as that of the two animakula. 

 This, its equality in fize to them, being pointed 

 at the extremity, and apparently compofed of the 

 the fam.e vafcular fubltance, evinced it to be an 

 juiimalcule of the faipe nature, expanding by de- 

 crees, and nov/ becom.e mofl: adive. While the 

 elliptical pellet prefented thcfe phenomena, the 

 round one O exhibited others. Within were in- 

 cluded a leller fphere difficult to be obferved, and 



whkh 



