THE NEKVOUS SYSTEM. 



463 



together, and towards the centre the endothelial sheath appears to be 

 absent. 



(3.) End-bulbs are found in the conjunctiva, in the glans penis and 

 clitoris, in the skin, in the lips, and in tendon; each is about -g^ inch 

 in diameter, oval or spheroidal, and is composed of a medullated nerve- 

 fibre, which terminates in corpuscles of various shapes, with a capsule 

 containing a transparent or striated mass, in the centre of which termi- 



FIG. 324. FIG. 325. 



FIG. 324. A corpuscle of Grandly, from the tongue of a duck. 

 FIG. 325. A touch-corpuscle of Meissner, from the skin of the human hand. 



nates the axis-cylinder of the nerve-fibre, the ending of which is some- 

 what clubbed (Fig. 322). 



(4.) Touch-corpuscles (Fig. 323) are found in the papillae of the skin 

 of the fingers and toes, or among its epithelium; they may be simple or 



m 



I 



FKK 326. FIG. 327. FIG. 328. 



FIG. 326. Termination of medullated nerve-fibres in tendon near the muscular insertion (Golgi). 



Fl - 3 ^ O n e. of the reticulated end-plates of Fig. 326, more highly magnified, a, medullated 

 nerve-fibre; 6, reticulated end-plates (Gofgi), 



FIG. 328. A termination of a medullated nerve-fibre in tendon, lower half with convoluted me- 

 dullated nerve-fibre (Golgi). 



compound; when simple, they are large and slightly flattened transpar- 

 ent nucleated ganglion cells, inclosed in a capsule; when compound the 

 capsule contains several small cells. They are small oblong masses, 

 about g-J-g- inch long, and -jfg- inch broad. Some regard touch-corpus- 

 cles as little else than masses of fibrous or connective tissue, surrounded 

 by elastic fibres, and formed, according to Huxley, by an increased de- 



