PROCEEDINGS 
OP THE 
ROYAL SOCIETY OF EDINBURGH. 
SESSION 1908-9. 
Part V.] VOL. XXIX. [Pp. 385-480. 
CONTENTS. 
NO. PAGE 
XXII. Flexural Vibrations of Thin Rods. By George Green, M.A., 
B.Sc., Assistant to the Professor of Natural Philosophy 
in the University of Glasgow. (Communicated by 
Professor Gray), ...... 393 
(Issued separately April 30, 1909.) 
XXIII. A Negative Attempt to detect Fluorescence Absorption. 
By Robert A. Houstoun, M.A., D.Sc., Ph.D., Lecturer 
on Physical Optics in the University of Glasgow. ( Com- 
municated by Professor A. Gray, F.R.S.), . . .401 
(Issued separately July 8, 1909.) 
XXIV. Experiment with the Spark Gap of an Induction Coil. By 
Dr Dawson Turner, ..... 414 
(Issued separately July 8, 1909.) 
XXV. Strophanthus sarmentosus : its Pharmacological Action and 
its Use as an Arrow Poison. By Sir Thomas R. Fraser, 
M.D., F.R.SS. L. & E., Professor of Materia Medica in the 
University of Edinburgh ; and Alxster T. Mackenzie, 
M.A., M.B., Ch.B., Carnegie Research Scholar, . . 415 
(Issued separately July 9, 1909.) 
[Continued on page iy of Cover . 
EDINBURGH : 
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