PLATE 2 
EXPLANATION OF FIGURES 
18 Drawn from a section through the right first inguinal gland of a female 
albino rat at birth. Zenker’s fixation; Mallory’s connective-tissue stain. ¢., 
corium; d.f., developing fat cells; ep., epidermis; h., hair follicles; m.b., muscle 
bundle; m.d., milk-ducts; t.s., tela subcutanea. X 83}. 
19 Drawn from a section through the right first inguinal gland of a female 
albino rat of nine weeks. Zenker’s fixation; Mallory’s connective-tissue stain. 
b., blood vessel; c., corium; c.t., connective-tissue lamina; ep., epidermis; f., fat 
cells; h., hair follicles; m.l., mantle layer; m.d., milk-ducts. X 833. 
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