PLATE I.* 



Fig. 1. Outline drawing of epidermis of parotid. Section near surface and 

 parallel to it. Circular bodies = beaker cells. X 280. 



Figs. 2-4. Outline drawing of epidermis to show relative thickness, shape of 

 cells and number of cell layers in different regions of the body of the adult 

 toad. X 310. 



Fig. 2. Parotid. Two beaker cells. 



Fig. 3. Ordinary skin of the back. Four beaker cells. 



Fig. 4. Ventral skin. 



*The illustrations of all the plates refer to the adult toad unless otherwise 

 stated. 



