EMBRYO OF SIXTY DAYS. 



151 



coils of the intestine into the coelom of the umbilical cord is about at its maxi- 

 mum. 



Sixty Days. — Embryo of 28 mm. The specimen figured resembles closely 

 in form, though it is larger, His's embryo Wt, which he has determined as a nor- 

 mal embryo of about eight and one-half weeks. The present specimen (Fig. 90) 

 came with no data. The head is still larger in proportion to the body than in 

 figure 89. The face shows the two lines, which, as seen in profile, mark the two 



Fig. 90. — Human Embryo of 28 mm. 

 X 3 diams. 



Fig. 91. — Human Embryo of 32 mm. X 3 diams. 



ridges which run over the cheek, one alongside the nose to the corner of the 

 mouth, the other from the eye ; these ridges are highly characteristic of the ninth 

 week, and traces of them not rarely persist in the adult physiognomy. The limbs 

 have grown considerably, the hands being lifted toward the face ; at the elbow 

 there is a considerable bend; the toes are all free and the soles of the feet are 

 turned toward one another. The tail has disappeared as a free appendage. The 

 external genitalia are considerably developed ; the clitoris-penis projects some 

 distance. 



