CUTANEOUS SENSIBILITY 



21 



with many nuclei. Two or more branches of a nerve - fibre 

 penetrate the core, and there lose their sheath and become 

 attenuated. The pale fibres divide and subdivide into a large 

 number of branches, which do not form twisted convolutions, but 

 run a tortuous course to the end of the core. The branched fibres 

 for the most part present numerous varicosities of different shapes 



^ ""'" 



Fio. 9. Dogiel's corpuscle, a, Varicose fibre, passing to the corpuscle ; 5, b, closed portion of 

 corpuscle, corresponding to the base of the papilla ; c, free part, corresponding to the apex of 

 the papilla, formed of non-inyelinated varicose h'bres. 



and sizes (Fig. 10). In others the varicosities are scanty, and the 

 appearance of the terminations is totally different (Fig. 11). In 

 - again, according to Crevatin and Dogiel, 



others 



one or more 



delicate non-medullated fibres also enter the corpuscle, where they 

 ramify and form a slender plexus at the periphery of the core, and 

 also penetrate inside and mingle with the ramifications of the 

 myelinated fibres (Fig. 12). 



In the subcutaneous fatty tissue there are two other charac- 

 teristic forms of corpuscles besides the Golgi - Mazzoni bodies : 



