The Metabolism of Voluntary Muscle 



22; 



A clo.ser ajjreement in the analyses of the muscles of tlie two letrs could 

 not well be expected. Hence the operative procedures in themselves were 

 without effect on the creatine content of the muscles. 



The .second series of experiments includes those in wiiici) the main 

 artery of the limb on the left side was ligatured immediately aV)ove 

 Poupart's ligament, before the excitation of the nerves was begun, Tlie 

 results obtained are given in the following table: — 



Group H, .allowing the effects of E.xcitatioii of the Left Anterior Crural and Sciatic \erve.s 



In each of the four experiments there has been a loss of creatine in the 

 excited muscles, accompanied by a reduction in the total nitrogen. There 

 has also been in three of the four an increase of water. 



That these results are due to the stimulation and not to the operation 

 is shown by a comparison with the following controls, in which all the 

 conditions were the same except that excitation of the nerves was 

 omitted : — 



Control Experiments to Group B, in which the Left Anterior Crural and Sciatic 

 Nerves were divided biit not excited, the Left External Iliac Artery being ligatured. 



