PLATE V. UNSTRIPED AND STRIPED MUSCLE. 

 Fig. 1. 



J ortions of spindle-shaped and tricaudate muscular fibre-cells from the thin 



-arc of the bladder of the hyla or green tree frog. The fine branches of nerve are 



seen ramifying amongst the mus cular fibres. X 900. 



iig 



Portion of very small artery, showing muscular fibre cells and nerve 'fibres, 

 ramifying in the areolar coat. Prog, x 700. 



Fig. 3. 



Bioplasm and formed, material (contractile tissue) of striped muscle. The 



bioplasm is supposed to be moving in the direction of the arrow. At present it is 



between a and 6, but it was once between b and c. As it has moved onwards, it 



has formed a filament of contractile tissue in its wake. 



