406 S. MORGULIS, PAUL E. HOWE AND P. B. HAWK. 



EXPLANATION OF FIGURES. 



All figures have been made with the camera lucida and under the same magni- 

 fication, using an objective No. 6 with an ocular piece No. 4 at normal tube length. 



Fig. I. A group of liver cells of a fasting fox. 



Figs. 2 and 3. Cross-section and longitudinal section of fundus gland of a 

 fasting dog. 



Fig. 4. Section of submaxillary gland of fasting dog. 



Fig. 5. Section of tubules in kidney of fasting fox. 



Figs. 6 and 7. Section of convoluted tubule and of Henle's loop in kidney of 

 fasting dog. 



