Joseph Marshall Flint 



385 



interlobular spaces in the submaxillary gland may be compared to those 

 in the liver, except that in the case of the former we have usually two 

 veins accompanying the duct instead of the single branch of the portal 

 vein which we are accustomed to see in the liver. The interlobular 



Fig. 6. — Slide digestion after SpaltchoU. Magnified about 85 diameters. The* sec- 

 tion is the one just follovving that sliown iu figure 5. All of the cells have been 

 removed from the specimen which shows fasciculi in the interlobular spaces and the 

 basement membranes about the alveoli. It is at once apparent that without the con- 

 trol specimen it would be impossible to distinguish the sections of the intralobular 

 ducts from the alveoli. The basement membranes of both structures have practically 

 the same arrangement. />, Interlobular duct ; .1, Interlobular artery ; F, Interlobular 

 vein; J/, Mucous alveoli. 



ducts (Fig. 5) like the other main channels are lined by two layers of 

 epithelial cells which possess all the chief characteristics of those we 

 have just described in ducts of a lower order. They also rest on the 

 basement membranes. In preparations that have been digested on a 



