754 
Proceedings of the Royal Society of Edinburgh. [Sess 
PROCEEDINGS OF THE ORDINARY MEETINGS, 
Session 1908-1909. 
FIRST ORDINARY MEETING. 
Monday , 2nd November 1908. 
Professor Gray, F.R.S., Vice-President, in the Chair. 
Dr H. Drinkwater signed the Roll, and was formally admitted a Fellow of the Society. 
The following Communications were read 
1. Temperature Observations on Loch Garry. By E. M. Wedderburn, M.A. , LL.B. ( With 
Lantern Illustrations. ) 
2. On the Discharge of Water from Circular Weirs and Orifices. By G. H. Gulliver, B.Sc. 
3. Dissymmetrical Separations in the Zeeman Elfect in Tungsten and Molybdenum. By 
Robert Jack, M.A., B.Sc., Ph. D., 1851 Exhibition Research Scholar, Glasgow University. 
Communicated by Professor Gray. 
4. On a Question in Absorption Spectroscopy. By Robert A. Houston, M.A., Ph.D., D.Sc., 
assisted by Alexander S. Russell, M.A. Communicated by Professor Gray. 
5. Preliminary Note on the Action of Nitric Anhydride on Mucic Acid. By G. E. Gibson, 
B.Sc. Communicated by Professor A. Crum Brown, F.R.S. 
SECOND ORDINARY MEETING. 
Monday , 1 Qth November 1908. 
Dr James Burgess, C.I.E., Vice-President, in the Chair. 
Mr J. Hannay Thompson signed the Roll, and was duly admitted a Fellow of the Society. 
The following Communications were read: — 
1. An Investigation of the Seiches of Loch Earn by the Scottish Lake Survey. Parts III.-V. 
By Professor Chrystal. 
2. Notes on Hydrodynamics : chiefly on Vortex Motion. By Professor Andrew Gray, F.R.S. 
THIRD ORDINARY MEETING. 
Monday , 7 th December 1908. 
Dr Horne, F.R.S., Vice-President, in the Chair. 
The following Communications were read : — 
1. A Monograph on the General Morphology of the Myxinoid Fishes, based on a study of 
Myxine. Part III. — Further Observations on the Skeleton. By Frank J. Cole, B.Sc., Professor 
of Zoology, University College, Reading. Communicated by Dr R. H. Traquair, F.R.S. 
2. An Investigation of the Seiches of Loch Earn by the Scottish Lake Survey. Parts III.-V. 
( With Lantern Illustrations.) By Professor Chrystal. ( Continuation . ) 
FOURTH ORDINARY MEETING. 
Monday , 21s/, December 1908. 
Professor Crum Brown, LL.D. , Vice-President, in the Chair. 
The following Communications were read : — 
1. A Photographic Apparatus for the purpose of Automatically Recording the Readings of the 
Scale and Vernier of any Instrument. By Dr J. R. Milne. ( Tlie Apparatus will be exhibited.) 
2. On the Friction at the extremities of a Short Bar subjected to a crushing load, and its 
influence upon the apparent compressive strength of the Material. By G. H. Gulliver, B.Sc. 
Mr William Gentle, B.Sc., was balloted for, and declared duly elected a Fellow of the 
Society. 
