PROCEEDINGS 
OP THE 
ROYAL SOCIETY OF EDINBURGH. 
SESSION 1911-12. 
Part IV.] VOL. XXXII. [Pp- 321-432. 
CONTENTS. 
NO. PAGE 
XXIII. On a Continuous-current Motor- Gyrostat with accessories for 
demonstrating the Properties and Practical Applications of the 
Gyrostat.- By James G. Gray, D.Sc., Lecturer on Physics in the 
University of Glasgow ; and George Burnside, Mechanical 
Assistant to the Professor of Natural Philosophy in the University 
of Glasgow, . . . . . . .321 
( Issued separately August 19, 1912.) 
XXIY. The Railway Transition Curve. By E. M. Horsburgh, . 333 
{Issued separately August 30, 1912.) 
XX Y. The Elastic Strength of Flat Plates : An Experimental Research. 
By W. J. Crawford, B.Sc., Mechanical Engineering Department, 
Municipal Technical Institute, Belfast. {Communicated by Pro- 
fessor C. G. Knott (Secretary), . . . 348 
{Issued separately September 9, 1912.) 
XXYI. Comparison of Mr Crawford’s Measurements of the Deflection of 
a Clamped Square Plate with Ritz’s Solution. By Professor C. G. 
Knott (Secretary), ...... 390 
{Issued separately September 9, 1912.) 
XXYII. Experiments in Radioactivity; the Production of the Thorium 
Emanation and its use in Therapeutics : Thorium X. By Dr 
Dawson Turner, . . . . . 393 
{Issued separately September 9, 1912.) 
[' Continued on page iv. of Cover 
EDINBURGH : 
Published by ROBERT GRANT & SON, 107 Princes Street, and 
WILLIAMS & NORGATE, 14 Henrietta Street, Coyent Garden, London. 
MDCCCCXII, 
Price Six Shillings. _ • 
