314 OF THE GROWTH, &c. 



of the extremities to the middle : Thefe are the 

 firft veftiges of the placenta. 



Seven days after conception, the lineaments 

 of the foetus are diftinguifhable by the naked 

 eye. They are, however, very imperfect, and 

 have the appearance of a gelly almoft iranfparent, 

 though it has acquired fome degree of folidity. 

 The head and trunk may be eafiiy diftinguilli- 

 ed ; becaufe this mafs is of an oblong figure, and 

 the trunk is longeft and moft delicate. Some 

 fmall fibres, refembling a plume of feathers, if- 

 fue from the middle of the foetus, and termi- 

 nate in the membrane in which it is inclofed. 

 Thefe fibres are the rudiments of the umbilical 

 cord. 



Fifteen days after conception, the head and 

 the moft prominent features of the face are ap- 

 parent. The nofe refembles a fmall elevated 

 thread perpendicular to a line which marks the 

 divifion of the lips : Two fmall black points re- 

 prefent the eyes ; and we fee two holes in place 

 of ears. The body of the foetus has alfo ac- 

 quired fome growth. On each fide of the fu- 

 perior and inferior parts of the trunk, thofe fmall 

 protuberances appear, which are the rudiments 

 of the arms and legs. The length of the whole 

 body is about five French lines. 



Eight days after, in all three weeks, the body 

 of the foetirs is -augmented only about a line : 

 But the arms, and legs .are apparent. The 

 .growth of the arms is quicker than that of the 



legs ; 



