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J. A. MYERS 



but the primary duct is seen to emerge from the inner surface 

 of the epidermal layer of the skin, pass deeply into the tela sub- 

 cutanea and suddenly turn at right angles after which it lies paral- 



Fig. 4 Internal view of a wax model reconstructed from the right third tho- 

 racic gland of a newborn albino rat. X 40. (For lettering, see fig. 3.) 



