1908-9.] Strophanthus sarmentosus : Pharmacological Action. 417 
1 in 1000 to 1 in 500. Slight dilatation of the pupil accompanies the 
ansesthesia produced by placing such solutions on the eyeball of warm- 
blooded animals. 
The function of motor nerves is slowly impaired, owing to the action 
of the extract on the nerve-ends, and, much later, it is abolished. Before 
abolition of function, fibrillary twitches occur in the muscles. The occur- 
rence of these twitches is prevented by paralysing the nerve-ends with 
curara. 
It would appear, accordingly, that the action of S. sarmentosus is very 
similar to that of S. hispidus. 
(Issued separately July 9 , 1909 .) 
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