Pressure in mm. Hg. 



ACTION OX IIADBITS. 

 Fig. 107. 



177 



;rfot poisoned. 



Poisoned with curare. 

 X Inhalation stopped. 



Seconds. 



whether the dilatation of the vessels v/as due to a direct action 

 of the substance upon them or to a diminution in the tone which 



N 



