435 
1899 - 1900 .] Meetings of the Society. 
Sir William Turner, F.R.S. Trans., vol. 40, pp. 59-129. (Abstract.) 
pp. 161-162. 
2. A Bathymetrical Survey of the Scottish Fresh-water Lochs : Lochs 
Chon, Ard, Menteith, Earn, Leven, Garry, and Ericht ; with Observa- 
tions on the Distribution of Temperature in the Water of these Lochs. 
By Sir John Murray, K.C.B., and Mr Fred. P. Pullar, F.R.G.S. 
3. Further Note on the Preparation of the Diamond : — a Claim for 
Priority. By R. Sydney Marsden, M.B., D.Sc. 
Mr James Young Simpson, Dr William Gayton, Mr James 
Mitchell, Mr James Bower Bennett, and Dr Nathan Raw were 
balloted for, and declared duly elected Fellows of the Society. 
FOURTEENTH AND LAST ORDINARY MEETING. 
Monday, 1 6th July 1900. 
Professor Copeland, and, subsequently, The Right Hon. 
Lord Kelvin, G.C.Y.O., President, in the Chair. 
Mr James Mitchell was admitted a Fellow of the Society. 
The following Communications were read : — 
1. On the Motion produced in an Infinite Elastic Solid by the 
Motion, through the Space occupied by it, of a body acting on it 
only by Attraction or Repulsion. By the Rt. Hon. Lord Kelvin, 
President, pp. 218-235. 
2. On the Number of Molecules in a cubic centimetre of Gas. 
By the Same. 
3. Hyperbolic Quaternions. By Alexander Macfarlane, M.A., 
D.Sc. pp. 169-180. 
4. Preliminary Note on the Deep-Sea Deposits collected during the 
“Valdivia” Expedition. By Sir John Murray, K.C.B., and Dr E. 
Philippi. 
5. Leakage of Electricity from Charged Bodies at Moderate Tempera- 
tures. II. By Professor J. C. Beattie, D.Sc. 
6. The Theory of Skew Determinants and Pfaffians in the historical 
order of its development up to 1857. By Thomas Muir, LL.D. pp. 
181-217. 
7. Brief Review of the Session. By the President. 
