THE LARGE INTESTINE OF THE PIG 



503 



Fig- 20 



Fig. 21 



Fig. 22 



Fig. 23 



Figs. 20-23 Anomalies of the spiral. Figure 21, abnormal coil from an 

 embryo of 55 mm., placed beside a normal specimen (fig. 20) for comparison: 

 X 14 diam. Figure 23, an abnormal coil from an embrjj^o of 120 mm., placed 

 beside a normal coil (fig. 22) from an embryo of 100 mm. : X 7 diam. 



