ANIMALS. 377 



covered with its double membrane, and these 

 much more distinct than before. In nine days 

 having examined the liquor contained in one of 

 these eggs, he found it, from a limpid colour, 

 less fluid, to have got a light cloud floating upon 

 it. In ten days this cloud began to thicken, and 

 to form an oblong body, of the figure of a little 

 worm : and in twelve days the figure of the em- 

 bryo was distinctly to be perceived, and even its 

 parts came into view. In the region of the 

 breast he perceived two bloody specks ; and two 

 more that appeared whitish. Fourteen days after 

 impregnation, the head of the embryo was be- 

 come large and transparent, the eyes prominent, 

 the mouth open, and the rudiments of the ears 

 beginning to appear ; the back-bone, of a whitish 

 colour, was bent towards the breast : the two 

 bloody specks being now considerably increased, 

 appeared to be nothing less than the outlines of 

 the two ventricles of the heart ; and the two 

 whitish specks on each side now appeared to be 

 the rudiments of the lungs : towards the region 

 of the belly, the liver began to be seen, of a red- 

 dish colour ; and a little intricate mass, like ra- 

 velled thread, discerned, which soon appeared to 

 be the stomach and the intestines : the legs soon 

 after began to be seen, and to assume their natu- 

 ral positions ; and from that time forth, all the 

 parts being formed, every day only served to de- 

 velope them still more, until the thirty-first day, 

 when the rabbit brought forth her young, com- 

 pletely fitted for the purposes of their humble 

 happiness. 



