ACCORDING TO BRESCHET AND ROUSSEL DE VAUZEME. 423 



constituent parts of the skin, the existence of which they had 

 proved separately under the microscope. 



Thus, a is the derm, b, The corneous or horny epiderrmic 

 matter, c, The vessels and nerves which go out from the der- 

 mis. d, Space filled up by their capillary branches, e, Ner- 



Fig. 112.* 



vous or tactile papillae. The diapnogenous, or sudoriferous 

 apparatus, composed of a glandular parenchyma,/, and of spi- 

 ral sudoriferous canals, g. The glandular or secretory organ is 

 inclosed in the substance of the skin, and the canals pass up 

 between the papillae and open obliquely on the surface of the 

 epidermis, constituting the microscopical orifices, from which 

 we see the sweat exuding on the palms of the hand, and soles 

 of the feet. A, The inhaling apparatus, or absorbent canals, 

 which resemble in many respects the lymphatic vessels : they 

 are situated in the corneous matter, or rete mucosum ; they are 

 seen to commence under the most superficial layer of the corne- 

 ous matter which forms the cuticle ; no mouths or orifices are 

 seen, and it is impossible to say, whether they commence in the 

 form of a cul de sac or not. They pass down between the papil- 

 lae, by the side of the sudoriferous canals, and communicate with 



