CONTENTS. 
1. The Freezing-Points of Rhombic Sulphur and of Soufre Nacre. By Alexander 
Smith and C. M. Carson. Issued separately January 10, 1912, 
2. The Preparation and Properties of Basic Copper Nitrate and the Hydrates of 
Copper Nitrate. By Alexander Charles Cumming and Alexander Gemmell. 
Issued separately January 10, 1912, 
3. On the Reduction of Ferric Iron (1) by Sulphurous Acid and (2) by Zinc Dust. 
By Alexander Charles Cumming and E. W. Hamilton Smith. Issued separ- 
ately January 10, 1912, . 
4. Note on a Perforated Silica Plate for excluding Flame Gases from a Crucible 
during Ignition. By Alexander Charles Cumming. Issued separately January 
31, 1912, .......... 
5. Observations on the Body Temperature of some Diving and Swimming Birds. 
By Sutherland Simpson, M.D., D.Sc. (From the Physiological Laboratory, 
Medical College, Cornell University, Ithaca, N.Y., U.S.A.) Issued separ- 
ately February 16, 1912, ........ 
6. Note upon the Structure of Ternary Alloys. By G. H. Gulliver, B.Sc., 
AM.I.Mech.E., Lecturer in Engineering in the University of Edinburgh. 
(With One Plate.) Issued separately February 16, 1912, 
7. The Absorption of Light by Inorganic Salts. No. V. : Copper and the Alkali 
Metals. By R. A. Houstoun, M.A., Ph.D., D.Sc., Lecturer on Physical Optics 
in the University of Glasgow. Issued separately March 20, 1912, 
8. The Absorption of Light by Inorganic Salts. No. VI. : The Cobalt Chloride 
Colour Change. By Alex. R. Brown, M.A., Carnegie Scholar in the University 
of Glasgow. Communicated by Dr. R. A. Houstoun. Issued separately March 
20,1912, 
9. Observations on the Structure and Affinities of Branchiomaldane vincenti Langer- 
hans. By J. H. Ashworth, D.Sc., Lecturer in Invertebrate Zoology, Uni- 
versity of Edinburgh. (With One Plate.) Issued separately April 11, 1912, 
10. A Method of Measuring Mental Processes in Normal and Insane People, with 
special reference to Maniac Depressive Insanity. By George Rutherford 
Jeffrey, M.D. (Glas.), F.R.C.P. (Edin.), Senior Assistant Physician, Crichton 
Royal Institution, Dumfries ; late Senior Assistant Physician, District 
Asylum, Ayr. Communicated by Sir James Crichton-Browne. Issued separately 
April 13, 1912, ......... 
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