1186 
Proceedings of Royal Society of Edinburgh. [sess. 
SIXTH ORDINARY MEETING. 
Monday , 23 rd January 1905. 
I)r R. H. Traquair, F.R.S., Vice-President, in the Chair. 
The following Communications were read : — 
1. On the Canal Ship Waves. By the Rt. Hon. Lord Kelvin, 
G.C.V.O., President, pp. 562-587. 
2. A Comparative Study of the Lakes of Scotland and Denmark. By 
Dr C. Wesenberg-Lund. Communicated by Sir John Murray, 
K.C.B., P.R.S. pp. 401-448. 
3. On a New Family and Twelve New Species of Rotifera of the order 
Bdelloida, collected by the Lake Survey. By James Murray, Esq. 
Communicated by Sir John Murray, K.C.B., F.R.S. Trans., vol. 41, 
pp. 367-384. 
4. Variations in the Crystallisation of Potassium Hydrogen Succinate 
due to the presence of other metallic compounds in the solution. (Pre- 
liminary Notice.) By Alexander T. Cameron, M.A. Communicated 
by Dr Hugh Marshall, F.R.S. pp. 449-451. 
5. Continuants whose main Diagonal is Univarial. By Thomas Muir, 
LL.D. pp. 507-512. 
6. The Eliminant of a set of General Ternary Quadrics. By the Same. 
'Trans ., vol. 41, pp. 387-397. 
Mr William Anderson, M.A., Dr John Cameron, the Rev. 
Wm. Galloway Donaldson, Professor Hector Munro Macdonald, 
F.R.S., Mr Archibald Milne, M.A., Mr C. II. Miller-Milne, 
M.A., Mr Peter Pinkerton, ALA., Mr George Romanes, and Mr 
Alexander Thoms were balloted for, and declared duly elected 
Fellows of the Society. 
SEVENTH ORDINARY MEETING. 
Monday , (5th February 1905. 
Dr R. H. Traquair, F.R.S. , Adce-President, in the Chair. 
Dr John Cameron and Air R. George Romanes were admitted 
Fellows of the Society. 
The following Communications were read : — 
1. On Penella : a Crustacean Parasitic on the Finner Whale ( Balce - 
noptera musculus). By Sir William Turner, K.C.B., LL.D. ( With 
Lantern Illustrations.) Trans., vol. 41, pp. 409-434. ( Abstract , p. 480.) 
