PLATE 2 



EXPLANATION OF FIGURES 



lU Drawn from a cleared preparation (internal view) of an albino rat foui 

 weeks old (weight 53 grams) to show distribution and relations of ducts of left 

 abdominal gland (A); left first inguinal gland (B), and left second inguinal gland 

 (C). X 5. A.n., abdominal nipple; I.n.l, I.n.2, 1st and 2d inguinal nipples; 

 p.d., primary duct; s.d., secondary duct; t.d., tertiary duct; tr.d., terminal duct; 

 e.h., end-bud; L, lymph-node. 



11 Same as figure 10, but from an albino rat five weeks old (weight 54 grams K 

 X 5. 



330 



