STUDIES ON THE PANCREAS OF THE GUINEA PIG 



R. a. BENSLEY 



PLATE 1 



Figs. 1-3 Photomicrographs of jireparatioiis of the pancreas of the guinea ]iig, 

 made by injection of neutral red into the blood vessels, showing the character of the 

 preparations in which the counts of islets of Langerhans were made, and also the 

 variations in size and frequency of the islets. X 38. 



THE AMERICAN JODRN.^L OF ANATOMY, VOL. 12, NO. 3 



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