PLATE I 



Ve/n/ete 



/Jrter/oJes 



and 

 Capillaries 



Diagram of Cell-metabolism. 



The substances mentioned on the outer edges of the two cells are some of the materials 

 of cell-anabolism, while those whose names are seen between the cells are katabolic products 

 on their outward way into the circulation. The red lines show the locations of osmotic 

 membranes. 



