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Proceedings of the Eoyal Society of Edinburgh. [Sess. 
SIXTH ORDINARY MEETING. 
Monday, 22 nd January 1912. 
James Burgess, C.I.E., LL.D. , Vice-President, in the Chair. 
The following Communications were read : — 
1. Note upon the Structure of Ternary Alloys. By G. H. Gulliver, B.Sc. , A.M.I.Mech. E. 
Proc., vol. xxxii. pp. 36-39. 
2. The Absorption of Light by Inorganic Salts : 
No. Y. — Copper and the Alkali Metals. By Dr R. A. Houstoun. Proc., vol. xxxii. pp. 
40-49. 
No. VI. — The Cobalt Chloride Colour Change. By Alex. R. Brown, M.A. Communicated 
by Dr R. A. Houstoun. Proc., vol. xxxii. pp. 50-61. 
3. Observations on the Structure and Affinities of Branchiomaldane vincenti, Langerhans. 
By Dr J. H. Ashworth. Proc., vol. xxxii. pp. 62-72. 
4. The Elastic Strength of Flat Plates. By W. J. Crawford, B.Sc. Communicated by Dr 
C. G. Knott. Proc., vol. xxxii. pp. 348-392 (including Dr Knott’s note). 
The following Gentlemen signed the Roll, and were duly admitted Fellows of the Society : — 
Dr R. A. Houstoun, Di- A. E. Bridger, Prof. R. A. Sampson. 
SEVENTH ORDINARY MEETING. 
Monday, 5tli February 1912. 
Sir Thomas R. Fraser, M.D., LL.D., F.R.S., Vice-President, in the Chair. 
The following Communications were read : — 
1. On the Bionomics of Nematus Ericksonii (Hartig), the Large Larch Sawfly. By Dr R. 
Stewart MacDougall. 
2. The Molecular Theory of Magnetism in Solids. By Professor W. Peddie. Proc. , vol. xxxii. 
pp. 216-246. 
3. Note on the Torsional Oscillations of Magnesium Wires. By Mr G. P. Seaman. Com- 
municated by Professor W. Peddie. Proc., vol. xxxii. pp. 247-250. 
EIGHTH ORDINARY MEETING. 
Monday, 19 th February 1912. 
Professor J. C. Ewart, F.R. S., Vice-President, in the Chair. 
The following Communications were read : — 
1. Entomostraca of the Scottish National Antarctic Expedition. By Dr Thomas Scott. 
Communicated by Dr J. H. Ashworth. Trans., vol. xlviii. pp. 521-599. 
2. Cephalopoda of the Scottish National Antarctic Expedition. By Dr W. E. Hoyle. Trans., 
vol. xlviii. pp. 273-283. 
3. The Tunicata of the Scottish National Antarctic Expedition. By Professor W. A. Herdman. 
Trans., vol. xlviii. pp. 305-320. 
4. Notes on Hamiltonian Dynamics. By Professor Andrew Gray, F.R.S. Proc., vol. xxxii. 
pp. 164-174. 
5. An Investigation into the Effects of Seasonal Changes on Body Temperature. By Professor 
Sutherland Simpson. Proc., vol. xxxii. pp. 110-135. 
Sir Thomas Carlaw Martin signed the Roll, and was duly admitted a Fellow of the Society. 
The following Candidates for Fellowship were Balloted for and declared duly elected : — John 
Stephenson, M.B., D.Sc., Arnold Hartley Gibson, D.Sc., John George Lindsay, M.A., B.Sc. 
NINTH ORDINARY MEETING. 
Monday, tth March 1912. 
Professor T. Hudson Beare, B.Sc., M.Inst.C.E., Vice-President, in the Chair. 
The following Communications were read : — 
1. The Geometry of Twin Crystals. By Dr John W. Evans. Communicated by Professor 
J. W. Gregory, F.R.S. Proc., vol. xxxii. pp. 416-457. 
