570 



THE TISSUES. 



gland, containing longitudinal smooth muscular fibres. (ffenJe.) 

 The epithelium is conoidal in the larger ducts, and scaly in the 

 smaller. 



Fig. 396. 



Six milk-tubes of the lacteal gland, injected from the nipple, a. The straight tubes proceeding to 

 the apex of the nipple. 6. Keservoirs, or dilatations of the ducts, c. Branches of the ducts, d. 

 Terminal lobules. (Sir A. Cooper.) 



Fig. 397. 



Terminal lobule of lacteal gland with ducts ; from 

 a puerperal woman. Magnified 70 diameters. (Lan- 



The nipple and areola con- 

 tain many smooth muscular 

 fibres (p. 477), and which are 

 much increased in pregnancy. 

 Its compound papillas are T ^ 

 to gig of an inch long; and 

 their direction is from the base 

 towards the. apex of the nipple. 

 The cuticle is not more than 

 20*00 of an inch thick; while 

 the Malpighian layer is 3^ of 

 an inch thick, and colored in 

 the deeper portion. Over the 

 gland itself, the papillae are 

 small and simple, and the epi- 

 thelium still finer. In the 

 areola, but not on the nipple, 

 there are large sebaceous folli- 



