ON GENERATION. i8i 



a6live, moving with rapidity round their centres, 

 and in all diredlions. I obferved them, from 

 time to time, during three days, and they always 

 became fmaller and fmaller, till they totally dis- 

 appeared on the third day. 



E X P E R. XL. 



I procured the uteri of three other cows. I 

 ■firft iearclied the tefticles, in order to difcover 

 if there were any mature glandulous bodies. In 

 two of the uteri I found only fmall glandulous 

 bodies on the teflicles. I was not informed 

 whether the cows had ever brought forth ; but 

 it is probable that they had often been in feafon; 

 for a number of cicatrices appeared on their te- 

 fticles. On one of the teftlcles of the third cow, 

 1 obferved a glandulous body as large as a cherry, 

 and very red; it was much fwellcd, and feemed 

 to be perfedly ripe. I prclfed the nipple, which 

 was perforated by a hole, with my fingers, and 

 a confiderable quantity of liquor ifliied out. Ii\ 

 this liquor, 1 found moving bodies [I'l. VJ. 

 fig. 24.] perfedly fimilar to ihofe defcribed in 

 Exper. XXXVl. Their number v.'as indeed 

 greater, and their progreiTive motion was quick- 

 ei- ; they fecmcd to be fomcwhat longer; and, 

 having obferved them a long time, I perceived 

 that they grew longer, and changed their figure. 

 I then introduced a fine probe into the fmall 



M 3 aperture 



