/ ns. Roy. Soc. Edin. 



Vol. XLVII. 



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



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



-Secoi cry coil at 120 mm. Fig. 7. — Secondary coil at 100 mm. Fig. 8.— Secondary coil at 100 mm. Fig. 9. — Secondary coil at 80 mm. 



Experiment LI.— Muscle Tracing*. Extract of Strophanthus sarmentosus (1 in 10,000). Reads left to right. 



