i62 EXPERIMENTS 



certain; becaufe the fmall drops dried in a mi- 

 nute or two after they were put upon the glafs. 



E X P E R. XV. 



I cut the tefticles of this dog into two parts, 

 put them into a glafs-veflel, with as much wa- 

 ter as was fufficient to cover them, and corked 

 up the glafs. Three days after, I examined this 

 infufion with a view to difcoverif the flelh con- 

 tained any moving bodies, and 1 perceived 'in 

 the water of this infufion a great number of 

 moving bodies, fome of them of a globular, 

 others of an oval figure, and entirely refcmbling 

 thofe I had feen in the feminal fluid of the for- 

 mer dog, except that they had no threads or tails : 

 They moved in all direclions with great viva- 

 city. I obferved, during a long time, thefe bo- 

 dies, which appeared to l^e animated, and I per- 

 ceived feveral of them change their figures be- 

 fore my eyes. Some of them lengthened, o- 

 thers contracted, and others fwelled at the two 

 extremities. Tlie whole of them feem.ed to 

 turn on their centres; fome of them were laro-er 

 and others Imaller; but the v/hole w^ere in mo- 

 tion, and refembled, both in fize and fi<^ure, 

 thofs which were defcribcd in Exper. IV. 



E :^P E R, 



