96 EXAMINATION OF 



horns, and, by tlieli? number, formed a kind of 

 membrane or empty coat. A day or two after- 

 wards, this coat or fac was filled with a white, 

 aqueous, vifcid matter, and adhered to the ute- 

 rus by means of a kind of mucilage ; and the 

 adhefion was mofl: fcnfible at the fuperior part of 

 the uterus, where the rudiments of the placenta 

 began then to appear. In the third month', this 

 fac contained an embryo of two fingers breadth 

 in length, and alfo an internal fac, called the 

 amnios, inclofinga tranfparent cryftalline liquor, 

 in which the foetus fwam. The foetus, at 

 firft, was only an animated point, like what ap- 

 peared in the hen's egg. Every thing now pro- 

 ceeded and terminated in the fame manner as 

 defcribed with regard to the chick, with this on- 

 ly difference, that the eyes of the chick appear- 

 ed much fooner than thofe of the deer. The aT 

 nimated point was vifible about the 19th or 20th 

 of November. A day or two afterwards, the 

 oblong bod)^, which contained the rudiments of 

 the foetus, made its appearance. In fix or {even 

 days more, the foetus was fo completely formed, 

 that all its members, and even its fex, were di- 

 ftinguifiiable. But the heart and vifcera were 

 ftill baie ; and it was not till a day or two after, 

 that they w^ere covered v^ith the integuments of 

 the abdomen and thorax. This is the laft v/ork, 

 the flating of the edifice. 



From thefe experiments upon hens and deer, 

 Harvey concludes, that all female animals have 



eggs J 



