CONTENTS. 
PAGE 
1. The Influence of James Geikie’s Researches on the Development of Glacial 
Geology. Opening Address by John Horne, LL.D., F.R.S., President. Issued 
separately May 8, 1916, ........ 1 
2. Notices of Fellows, Honorary and Ordinary, recently deceased. By The General 
Secretary. Issued separately May 8, 1916, . . . . .26 
3. The Torsional Vibration of Beams of Commercial Section. By Ernest G. Ritchie, 
B.Sc., Engineering Department, University College, Dundee. Communicated, 
by Professor A. H. Gibson. Issued separately May 8, 1916, . . .32 
4. The Origin of Oil-Shale. By E. H. Cunningham-Craig, B.A., F.G.S. Com- 
municated by Dr Horne, F.R.S. Issued separately May 16, 1916, . . 44 
5. The Geometria Organica of Colin Maclaurin : A Historical and Critical Survey. 
By Charles Tweedie, M.A., B.Sc , Lecturer in Mathematics, Edinburgh 
University. Issued separately October 20, 1916, . . . .87 
6. The Theory of Circulants from 1880 to 1900. By Sir Thomas Muir, LL.D., 
F.R.S. Issued separately October 14, 1916, ..... 151 
7. The Dynamics of Cyclones and Anticyclones. Part III. By John Aitken, 
LL.D., F.R.S. Issued separately September 30, 1916, . . . . 174 
8. Clinical Methods of Estimation of Sugar in the Blood. By Dr Harry Rainy and 
Miss Christina M. Hawick, B.Sc. Issued separately September 30, 1916, . 186 
9. Note on Captain Weir’s Azimuth Diagram and its anticipation of a Spherical 
Triangle Nomogram. By Herbert Bell, M.A., B.Sc. Communicated by The 
General Secretary. Issued separately November 29, 1916, . . . 192 
10. On a Possible Explanation of the Satellites of Spectral Lines. By R. A. Houstoun, 
M.A., Ph.D., D.Sc., Lecturer on Physical Optics in the University of Glasgow. 
Issued separately November 29, 1916, . . . .199 
11. The Optical Rotation and Cryoscopic Behaviour of Sugars dissolved in (a) Forma- 
mide, (b) Water. Part II. By John Edwin Mackenzie and Sudhamoy Ghosh, 
D.Sc. (Edin.). Communicated by Professor J. Walker, F.R.S. Issued 
separately November 29, 1916, . . . . . . 204 
12. Note on the Sublimation of Sugars. By Sudhamoy Ghosh, D.Sc. (Edin.). 
Communicated by Professor J. Walker, F.R.S. Issued separately November 
30, 1916, .......... 216 
