502 AN AMERICAN TEXT-BOOK OF PHYSIOLOGY. 



is comparatively small. In curarized auinials reflex dilatation apparently follows 

 the stimulation of the nerves the excitation of which would have caused the 

 contraction of the muscles observed, had not the occurrence of actual contrac- 

 tion been prevented by the curare. The stimulation of the central end of 

 nerves not capable of calling forth reflex contractions in the muscles observed 

 for example, the vagus seems to cause constriction of the muscle-vessels. 1 



1 Gaskell, 1878, p. 289. 



