THE CONTRACTION OF MUSCLE 



FIG. 288. 



To be read from right to left. Photographic curve of sartorius muscle by isometric- 

 method. At first two submaximaL stimuli, followed by two pairs of maximal 

 stimuli, then by a tetanus, followed by another pair of single responses. The 

 tension set up in the muscle during tettnts is greater tfcf n the maximal tension 

 of a single twitch. (G. R. Mines.) 



A 



FIG. 289. SPONTANEOUS MOVEMENTS IN TOAD'S SAETORICS IN 7 PER CENT. SODIUM 

 CHLORIDE. (G. R. Mines.) 



Temperature 8 C. Time in seconds. 



Fi<;. 200. BICEPS CRUKI.S OF FROG IN SODIUM CHLORIDE 0-65 PER CENT., POTASSIUM 

 CHLORIDE 0-05 PER CENT. (G. R. Mines.) 



A period of one second is marked below. 



