42 



ANATOMY or THE CENTRAL NERVOUS SYSTEM. 



to the epithelial cells of a frog's gum there pass end-fibers (C), and how the 

 pigment-cells in the skin of fishes are densely surrounded by a regular net 

 of fibers (D). In the liver, too, and the bladder, and in many other places, 

 one can find numerous examples of the abundant peripheral innervation. 

 We have always attached too great importance to the single end-apparatus, 



\ 





Fig. 17. — A, Hairs from a mouse. B, Cross-section of same. (V. Geliuchten.) 

 C, Nerves to the epithelial cells of a frog's gums (Gmgiiu). Methyl-blue prepa- 

 ration by Berthi. D, Pigment-cells from the skin of Alburn us, showing the nerve- 

 reticulura. (Berthi and Bunge.) 



overlooking the fact that really the major portion of the body-tissues is 

 supplied with nerves for every cell. One can hardly overestimate the 

 wealth of nerve-fibers in the real end-organs themselves, as the taste- 



