ACCORDING TO GAULTIER. 421 



Fig. 1 W.* pies, (bourgeons sanguins.) 3, The tunica albida 



& profunda, covering these papillae upon their top 

 ft and sides, and united to the upper surface of the 

 ' derma, and composed entirely of white vessels, 

 (serous capillaries.) 4, Gemmules ; a sort of membrane so 

 named from its undulations, excavated on its internal face, 

 which covers in the tunica albida profunda. This is the seat of 

 the coloring matter of the skin, and each undulation receives 

 two of the bifid tops of the papillae, called bourgeons sanguins. 

 5, Tunica albida superficialis, which covers over the gemmules, 

 and is also formed entirely of white vessels. 6, The external face 

 of the skin, which is only the dried surface of the tunica albida 

 superficialis, or the proper epidermis. Gaultier considers four 

 of these layers as belonging to the rete mucosum ; the perpen- 

 dicular vascular fasciculi (bourgeons sanguins,) the gemmules 

 and the two white tunics. 



Fig. lll.f The first and second of these 



four, correspond with the two 

 vascular layers which Bichat as- 

 signs to the rete mucosum ; and 

 the views of Gaultier differ from 

 this writer's in his adding two more tunics, tun. albid. profun- 

 da, and tun. albid. superficialis. But the vascular fasciculi, 

 as Dutrochet and Beclard have asserted, belong to the cutis 

 vera, and form a part of the proper papillary body ; and were 

 probably the parts injected by Baynham and Cruikshank 

 thus leaving the rete mucosum formed of three layers. Thus 

 modified, Gaultier's researches have been adopted by many 

 writers. 



But there were not wanting others who entertained different 

 views. Gall believed the rete mucosum a nervous expansion 



*Fig. 110, Is a representation of the skin, and the basis of the papillae, 

 the latter surmounted by the vascular villi or fasciculi, (bourgeons sanguins.) 

 The space between these fasciculi is filled up, in the natural state of the parts, 

 according to Gaultier, with the tunica aibida profunda. 



f Fig. Ill, Is a representation of the derm, or cutis vera, with a line of 

 prominences on its upper surface, constituting the basis of the papillae. 



36 



