It 



s. Roy. Soc. Edin. 



Vol. XLVII. 



Thomas R. Fraser and Mr Alister T. Mackenzie on Strophanthus sarmentosus : its Pharmacological Action 



and its Use as an Arrow-poison. — Plate Xb. 



Fig. 9. 



Fio. 11. 



3-2/-ZO 



Fig. 12. Fig. 13. 



Experiment LXIX. — Blood-pressure Tracings. Extract of Strophanthus only. Reads left to right. 



