ISM IN SALAMANDERS 



ir Medical Research, New York City 



weight exceeds by 96 per cent that of the normal worm-fed control animal. The liver-fed animal 

 is larger than the control animal, but much smaller than the anterior lobe-fed animal. 



Although liver-fed animals grow larger than worm-fed animals, neither liver nor earthworms 

 permit the salamanders to become as large as the hypophysis-fed animals. It is noteworthy that 

 the hypophysis-fed animals exceed in size not only the controls, but are considerably larger than 

 any known normal individual of that species. (Fig. 13.) 



