162 



JOHN SUNDWALL 



the relation of plasma cells to the secretory activity of the retro- 

 lingual gland of the hedge hog — they being fewer in number in 

 the stimulated gland than in the resting. Dantchakoff ('05) 

 observed the relation of plasma cells to the secretory activity 

 of the submaxillary gland of the rabbit, and Hannes ('11) de- 

 scribes them in the lachrymal gland of man. 



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M.ll. 



Fig. 5 Interstitial plasma cells. Oc. 4, obj. 2 mm. oil. 



IV. DUCT SYSTEM AND TUBULES 



For purposes of description I have adopted the following 

 classification of the duct system; (1) main ducts, Ductuli excre- 

 torii; (2) primary ducts; (3) interlobular ducts; (4) intralobular 

 ducts; (5) intercalary ducts; and (6) acini, alveoli, or tubules. 

 I see no reason for the inclusion of separate sublobular ducts in 

 the lachrymal gland. 



