392 
Proceedings of the Royal Society of Edinburgh. [Sess. 
PROCEEDINGS OF THE ORDINARY MEETINGS, 
Session 1915-1916. 
FIRST ORDINARY MEETING. 
Monday, November 1, 1915. 
John Horne, Esq., LL.D., F.R.S., F.G.S., President, in the Chair. 
The President opened the Session with an Address on the Influence of James Geikie’s Researches 
on the Development of Glacial Geology. „ 
SECOND ORDINARY MEETING. 
Monday, November 15, 1915. 
Dr John Horne, F.R.S., President, in the Chair. 
The following Communications were read : — 
1. Preliminary Notice of a Family showing inherited Abnormal Segmentation of the Digits of 
both Hands. By Dr H. Drinkwater, ( With Diagram and Lantern Illustrations.) 
2. The Moulting of the King Penguin. By Professor Cossar Ewart, F.R.S., and Miss 
Dorothy Mackenzie. ( W ith Lantern Illustrations. ) 
THIRD ORDINARY MEETING. 
Monday, December 6, 1915. 
Dr John Horne, F.R.S., President, in the Chair. 
The following Communications were read : — 
1. The Geometria Organica of Colin MacLaurin. By Charles Tweedie, M.A., B.Sc. In 
the absence of the Author, the Paper was read in abstract by Professor G. A. Gibson. 
2. The Anatomy of the Stem of the Papaveracece. By Professor R. J. Harvey Gibson and 
Miss M. Bradley, M.Sc. 
3. On a small Collection of Terrestrial Isopoda from Spain, with Descriptions of Four New 
Species. By W. E. Colringe. Communicated by Professor MTntosh. 
The following Candidate for Fellowship was balloted for, and declared duly elected : — Charles 
Stewart Hunter, L.R.C.P.E., L.R.C.S.E., D.P.H., Medical Officer of Health, Carnoustie. 
FOURTH ORDINARY MEETING. 
Monday, December 20, 1915. 
Dr John Horne, F.R. S., President, in the Chair. 
The following Communications were read : — 
1. The Torsional Vibration of Beams of Commercial Section. By E. G, Ritchie, B.Sc. Com- 
municated by Professor A. H. Gibson. 
2. The Origin of Oil Shale. By E. H. Cunningham Craig, B.A., F.G.S. Communicated 
by Dr Horne, F.R.S. 
3. The Theory of Circulants from 1880 to 1900. By Thomas Muir, C.M.G., LL.D., F.R..S. 
