XVI.] STRIPED OR STRIATED MUSCLE. 197 



as, if possible, to isolate a fibril. Mount in formic glycerine. The 



FIG. 172. Crab's Muscles, 

 partly schematic. A. 

 Non-stretched ; B. Ex- 

 tended ; A'. Fibrils ; D. 

 Dim ; L. Light stripes. 



. , 73 ._T.S. Muscle, with its Sheaths. P. 

 Perimysium ; E. Endomysium. 



dim disc is stained red (fig. 170, a), and if the fibre be stretched 



Or"' 



XT^'/VN, 

 "-' /Q^r-N V N 



FIG. 174.^. T.S. muscle fibres of newt ; B. 

 Of mammal; C. T.S. muscular fibres 

 (mammal), with endomysium: b. Blood- 

 vessel: /''. Fasciculus: P. Perimysiurn. 



FlQ. 175. Capillary Plexus in Muscles. 

 a. Artery; v Vein; e. Capillaries, 

 x 250. 



tli P. details of its structure can be better seen, especially if a very 

 high objective be used (fig. 171). 



