ON GENERATION. i6i 



E X P E R. XIII. 



The fmail glafs which contained this hquor 

 having been overturned by accident, I took, from 

 ihe fame dog, another quantity of femen. But, 

 whether the animal had been fatigued by too 

 frequent emiflions, or from fomc other cauie, 

 this feminal hquor contained nothing : It was 

 transparent and vifcous, hke the ferum of blood; 

 and, though 1 examined it, at different times, 

 for 24 hours, 1 could perceive no moving bo- 

 dies, no mucilage, nor, in a word, any thing fi- 

 milar to what 1 had formerly fecn. 



E X P E R. XIV. 



I then opened a dog, and took out the tcfticles, 

 md the velfels adhering to them; but I remark- 

 ed, that he had no feminal veflels : The lemen 

 of this animal probably paffes directly from the 

 lefticles into the urethra. Though the dog was 

 full grown and vigorous, I found very little fe- 

 im^n in the tefticles. 1 examined wiih the mi- 

 crofcope tlie fmall quantity I could colled: ; but 

 could perceive Jio moving bodies : I faw only a 

 i^reat number of verv minute ulobules, the 

 greateft part of which were motionlels ; and 

 ibme of the fmalleft of them leemed to move 

 •owardi; each other. But of this 1 could not be 



Vo;.. li. L certain : 



