MUSCULAR ACTION 



385 



absorbed by the dark or anisotropic disks. The lymph or sarcoplasm 

 flows in at Hensen's line and then in the two opposite directions of 

 Krause's "membranes." The work of Schafer, histological in nature, 

 tends to corroborate the suppositions of Engelmann and to make this 



Fio. 239 



Relaxation. 

 .Anabolism. 

 G/ycogen 



Con tract ion. 

 Katabo/ism. 

 Oxygen. 



Carbon dioxide. 



Water. 



Lac t/c Acid, etc. 



Dextrose, etc. 



Muscular action according to the Engelmann-Schafer theory of plasmic imbibition 

 caused by heat. 



theory of sarcomeric imbibition of muscle-plasm more probable than any 

 other. Blindly ending canals seem to Schafer to constitute the essen- 

 tial part of the minute sarcomeres, these swelling outward laterally and 

 shortening as they fill with the muscle-lymph from the isotropic disks. 

 25 



