LATER .MONTHS ol- PREGNANCY 



91 



knee form prominent angles, and a certain rotation takes place so that the elbow 

 oomos to be directed backwards and the knee forwards (fig. 122). The hind-limb 

 is at first smaller than the fore-limb, and is not so advanced in development. Thus 

 the fingers project from the free margin of the hand during the sixth week, while 



iFiG. 129. PREGNANT UTERUS OF THE FOURTH MONTH. 



The anterior wall of the uterus has been removed to show the fretus in the amnion. (By permission,, 

 from a preparation in the Hunterian Museum, University of Glasgow.) 



the toes do not reach the free border till the seventh week ; the foot is still in the 

 same plane with the leg. By the end of the eighth week the limbs extend beyond 

 the body, but the legs are still smaller than the arms. The thumb projects at 

 an angle different from the other fingers. The ankle-flexure now r begins to show, 

 but the limbs are so rotated that the soles of the feet look towards one another. 



