Note: Fo te .....    butrnbaiid,  general character of the* 
lesions the o oxiition would app  to .be cnsiswnt with chronic 
blackhead in the stage of repair.. We Icow-of no other infection 
Which would produce lesions of this character. 
Diagnosis-# Chronic typhl itl s with occlusion possibly due to 
chronic b1ackheado