148 



Inez Whipple Wilder. 



cations of the usual tubular type, of such a nature as to give the 

 effect of an acinous gland. 



Each lobe of the gland possesses a somewhat 'convoluted tubular 

 axis, variable in diameter, but often of much larger size than the 

 other tubules of the lobe. These central tubules possess a charac- 

 teristically low epithelium and wide lumina (Fig. 4, In) ; into them 

 open, often in clusters but with apparently no regularity, many con- 



FiG. 4. — Detail showing trausverse section of the lateral gland posterior 

 to the section given in Fig. 3. Abbreviations : alb, somewhat isolated anterior 

 lobe of the gland, sectioned through its extreme posterior end ; In, lumen 

 of the expanded central tubule of one lobe of the gland ; N, nasal bone. 

 Other abbreviations as in previous figures. 



voluted branches, each one of which, may in its turn exhibit much 

 irregular branching. The branches often extend anteriorly as well 

 as posteriorly from the point where they join the central tubule; 

 at their convolutions there are usually acinous enlargements, and 

 the smaller branches are frequently spherical in shape, thus forming 

 true acini. It is the presence of these acinous enlargements and 

 branches in the peripheral region that gives the acinous appearance 

 to the gland. In contrast to the low epithelium and the wide lumina 



