B 



FIG. 3. Involution of the udder of an old cow. (A) epithelium, (B) leucocytes, (C) 

 blood capillary, (D) interalveolar connective tissue. (From Chemie und Physiologic der 

 Milch, by Dr. W. Grimmer.) 



FIG. 4. (^1) Funnel-shaped, (B) bell-shaped extremity of the milk cistern. (From Chemie 

 und Physiologic der Milch, by Dr. W. Grimmer.) 



