278 



The Ducts of the Human Subniaxinarv Ghind 



substance. Their number is not constant but varies in different glands 

 between three and six. In the cases observed by the author there have 

 been, as a rule, three ducts of the first order. 



Fig. 2. — Celloidiu corrosion of an interlobular duct. Magnitied 12 diameters. The inter- 

 lobular duct is shown taking a rather tortuous course and giving ofif siiblobular 

 ducts of the first and second order. From these the lobular ducts are derived and 

 can be easily seen together with the larger portion of the intralobular system. The 

 lobular ducts in proportion to their diameters appear rather long. C, interlobular 

 duct; i>, sublobular duct ; ^, lobular duct ; i^, intralobular duct. 



From these main divisions arise the ducts of the second order which 

 are usually termed the interlobular ducts. They are of large caliber, 

 ramify extensively, and run for a considerable distance before giving 



