S. Kuriyama 205 
The glycogen of the liver of thyroid-fed frogs (Rana pipiens) 
is practically the same as that of control animals. This accords 
with the results obtained with frogs poisoned with strychnine 
or in hibernation and perhaps indicates a notable difference in 
the intensity of metabolism of warm- and cold-blooded animals 
and of the frog at different life stages. 
