278 LIST OF MICROSCOPICAL SPECIMENS. 



So. of diameters 

 No. maanified. 



of the dark-bordered nerre-fibres as fine pale 

 fibres ■with nuclei in the intervals can be clearly 

 demonstrated in this specimen. Eolliker thinks 

 these soon cease and thus form e>ids, page 250, 

 but in my specimens they may be followed much 

 further than KoUiker succeeded in tracing them, 

 and observations upon other muscles of the same 

 animal render it certain that these very fine nu- 

 cleated fibres come into close contact vrith the 

 sarcolemma and ramify over every part of the 

 sm-face of the elementary fibre . . . . . . 220 



119. Ultimate division of dark-bordered fibre into pale 



fibres, vcliich ramify on sarcolemma. Elementary 

 muscular fibre ; pectoral, fi'og .. .. .. 215 



120. Fine pale nerve-fibres distributed to striped mus- 



cle ; auricle of frog's heart. The gaughon cells 



are also seen , . . . . . . . . . . 215 



121. Striped muscle. Distribution of fine nerre-fibres 



in connective tissue of striped muscle ; hyla . . 215 



122. Distribution of bundles of nerves and vessels ; thin 



muscle. Chameleon . . . . . . . . 215 



123. Distribution of finest nei^e-fibres to elementary 



muscular fibres. Chameleon. Showmg supposed ! 



' end organs' . . . . . . . . . . 215 ; 



124. Distribution of nerve fibres to the elementary mus- 



cular fibres. Chameleon. The individual mus- 1 



cular fibres are separated from one another by \ 



more than their diameter so that the finest nerve- 1 



fibres can be seen in the intervals between them '. 



and traced over or imder them vrithout difficulty. j 



In this specimen many of the so-called 'nerve- |] 



tufts,' or ' end-organs,' can be discerned, but in ! 



almost every instance more than one individual I 



nerve-fibre can be traced to the tuft. It seems ! 



more pi'obable that the tuft consists of continuous ] 

 fibres, much coiled and convoluted, than that !*■ 

 is a terminal organ connected with the end of a 



single nerve-fibre. From every one of these i 



' nerve-tufts' fibres may be traced and followed ' 



for a considerable distance over many muscular ; 



fibres beyond. The arrangement will be under- 1 



stood if the figs, in plates XII and XIII, pages .1 

 263, 265, be carefully studied. There are no ends ■ \ 

 or terminations whatever . . . . . . . . 700 



