MODES OF TERMINATION OF NEEVE-FIBRES. 



105 



two or three times before ending, and then each branch passes straight 

 to a muscular fibre. Having reached this, the neurolemma of the 

 nerve-fibre is continued into the sarcolemma of the muscle, the medul- 

 lary sheath stops short, and the axis-cylinder ends in a close terminal 

 ramification with varicosities upon its branches (figs. 128, 129). This 

 rj unification is embedded in a layer of granular nucleated protoplasm. 

 In some cases the ramification is restricted to a small portion of the 



FIG. 127. OKGAN OF GOLGI FROM THE HUMAN TENDON ACHILLES. CHLORIDE OF GOLD 



PREPARATION. (Ciaccio.) 

 HI, muscular fibres ; t, tendon-bundles ; G, Golgi's organ ; n, two nerve-fibres passing to it. 





FIG. 128. NERVE-ENDING IN MUSCULAR FIBRE OF A LIZARD (Lacerta viridis). 



(Kiihne.) 



, end-plate seen edgeways ; 6, from the surface; s, s, sarcolemma; p, p, expansion of axis- 

 cylinder. In 6 the expansion of the axis-cylinder appears as a clear network branching 

 from the divisions of the medullated fibres. 



muscular fibre, and forms with the granular bed a slight prominence 

 (eminence of Doyere). This is the case in insects and mammals. In the 

 lizard the ramification is rather more extended than in mammals, whilst 

 in the frog it is spread over a considerable length of the fibre. In 



