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INTRA VENOUS INJECTION OF SUPRARENAL EXTRACT. 953 



nerve. It is in no way comparable to a curari effect, for the muscles 

 remain as excitable through their nerves as before. It is therefore an 

 effect en- 

 tirely dif- 

 ferent from 

 the s o- 

 calledauto- 

 toxication 

 paralysis 

 which is 

 stated to 

 result after 

 removal of 

 the supra- 

 renal cap- 

 s u 1 e s in 

 a n i m a 1 s 

 (but sec 

 note 6, p. 

 949), and 

 the materi- 

 al which is 

 extracted 

 by water, 

 therefore, 

 from the 

 suprarenal 

 capsules is 

 certainly 

 not the 

 same ma- 

 terial that 

 is said to 

 accumulate 

 in the blood 

 after the 

 removal of 

 those or- 

 gans. 



Action on 

 heart and 

 vessels. 

 The action 

 upon the 

 circulatory 

 s y s t e m 

 may be di- 

 vided into 

 the action 

 upon the 

 heart and 



the action upon the arterial system. Upon the heart the effect 

 according as the vagi are cut or uncut. When the vagi are 



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 SJH 



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differs, 

 uncut 



