726 



A. S. WAKTHIN 



_ 



occur; none of these have the vascular relations of the islet, and they all 

 appear to be acinar in structure. An interesting finding is the occasional 



Fig. 3. Active area of plasma-cell infiltration in chronic syphilitic pancreatitis 

 with diabetes. 



occurrence of these new-formations of acinar tissue within the lumen of a 

 larger duct. 



The twenty-four cases of diabetes studied by the writer show, there- 



Fig. 4. Colony of Spirochtjeta pallida, in edematous, infiltrated interlobular con- 

 nective tissue. 



fore, three cases of agenesia or hypoplasia of the islets, probably con- 

 genital, two cases of chronic duct infection without syphilis, and nineteen 

 cases of a chronic pancreatitis of a syphilitic nature. The study of the 



