INTRA VENOUS INJECTION OF SUPRARENAL EXTRACT 953 
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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 - 
called auto- 
toxi cation 
paralysi s 
which is 
stated to 
result after 
removal of 
the supra- 
renal cap- 
sules in 
animals 
(1) u t see 
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 
system 
may be di- 
vided into 
the action 
upon the 
heart and 
the action upon the arterial system 
according as the vagi are cut or 
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Upon the heart the effect differs, 
uncut. When the vagi are uncut 
