201 
to discover the Ova of Rabbits. 
more distinct, and the black spots, which I before conjectured 
to be congeries of vessels, were now proved to be so. 
EXPERIMENT III. 
I opened another female rabbit the third day after impreg- 
nation : that she was impregnated I could have no doubt, for 
I never knew impregnation fail if the female was hot, and the 
male had not been previously exhausted ; besides the corpora 
lutea in the ovaria fully proved it : the appearances were the 
same as in the last, only the corpora lutea were larger; but 
though I examined the fallopian tubes in the sunshine, and 
with great care, I could not find any ova, neither in them nor 
in the horns of the uterus. 
EXPERIMENT IV. 
I opened another female rabbit the fifth day after concep- 
tion : the appearances were much the same as in the former 
animal, only the corpora lutea were increased in bulk, but there 
was not the least vestige of an ovum any where that I could 
discover. I was now ready to exclaim with Haller, “ vix 
“ liceat admittere/' 
EXPERIMENT V. 
I opened another female rabbit on the eighth day after she 
had admitted the male : the ova were in the cavity of the ute- 
rus, and projected through its substance about the size of a 
large garden pea ; when I cut off the most superior part, and 
cut into the cavities of the ova, the liquor amnii escaped in a 
proportionate quantity ; by their adhesions to the internal sur- 
face of the uterus they remained extended, not collapsing in 
mdccxcvii. D d 
