4:5i HANDBOOK OF PHYSIOLOGY. 



connective tissue which connect the bundles together. In the funiculi 

 between the fibres is a delicate supporting tissue (the endoneurium). 



There are numerous lymph-spaces both beneath the connective tissue 

 investing individual nerve-fibres, and also beneath that which surrounds 

 the funiculi. 



FIG. 314. Several fibres of a bundle of medullated nerve-fibres acted upon by silver nitrate to 

 show peculiar behavior of nodes of Eanvier, N, towards this reagent. The silver has penetrated at 

 the nodes, and has stained the axis cylinder, M* for a short distance. S, the white substance. 

 (Klein and Noble Smith.) 



Course. Everv nerve-fibre in its course proceeds uninterrupedly from 

 its origin in a nerve-centre to near its destination, whether this be the 



FIG. 315. Small branch of a muscular nerve of the frog, near its termination, showing divisions 

 of the fibres, a, into two; 6, into three. X 350. (Kolliker.) 



periphery of the body, another nervous centre, or the same centre 

 whence it issued. 



