THE STRUCTURE OF MUSCLE. 



91 



semi-fluid, but it liardens and becomes solid immediately 

 after death. 



Examined, with high magnifying powers, in this 



Fig. 19. — Asfacus fliiviatUis.—A, a single muscular fibre; transverse 

 diameter jigth of an inch; B, a portion of the saine more highly 

 magnified ; C, a smaller portion still more highly magnified ; 

 D and E, the splitting up of a part of fibre into fibrillas ; F, the 

 connexion of a nervous with a muscular fibre which has been 

 treated with acetic acid. «, darker, and b, clearer portions of the 

 fibril]^ ; »,. nucleus of sarcolemma ; «r, nerve fibre; s, sarcolerama; 

 t, tendon; 1 — 5, successive dark bands answering to the darker 

 portions, n, of each fibril la. 



