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iii 
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Note on Mr M‘Aulay’s Paper. By Professor Tait, . . . . 205 
Additional Remarks on the Yirial of Molecular Force. By Professor Tait, . 206 
The Theory of Determinants in the Historical Order of its Development. By 
Thomas Muir, M.A., LL.D., ...... 207 
The Electrotonic Variation with Strong Polarising Currents. By George N. 
Stewart, Esq., D.Sc., Owens College, Manchester, .... 234 
Notice of Fundamental Tables in Trigonometry and Astronomy, arranged 
according to the Decimal Division of the Quadrant. By Edward Sang, 
LL.D., . . 249 
On Relation among the Line, Surface, and Volume Integrals. By Professor 
Tait, , . . . , ' . . .257 
The Development of Diarthrodial Joints in Birds and Mammals. By David 
Hepburn, M.B., M.R.C.S. (Eng.), Senior Demonstrator of Anatomy, 
University of Edinburgh. Communicated by Professor Sir William 
Turner, . . ....... 258 
Electrification of Air by Flame. By Sir William Thomson, , . . 262 
On the Placentation of the Halicore Dugong. By Professor Sir William 
Turner, ......... 264 
On the Geographical Distribution of some Tropical Diseases, and their Relation 
to Physical Phenomena. By R. W. Felkin, M.D., F.R.G.S., Lecturer on 
Diseases of the Tropics and CLmatology, Edinburgh Medical School. 
(With 16 Plates), ... . . . . . 266 
Quaternion Note on a Geometrical Problem. By Professor Tait, . . 315 
The Solubility of Carbonate of Lime in Fresh and Sea Water. By W. S. 
Anderson, Esq., Chemist at Marine Station, Granton, . . .319 
Secretion of Carbonate of Lime by Animals. Part II. By Robert Irvine, 
F.C.S., and G. Sims Woodhead, M.D., ..... 324 
Theoretical Description of a New “ Azimuth Diagram.” By Captain Patrick 
Weir. Communicated by Sir William Thomson, . . . 354 
Note on Captain Weir’s Paper. By Professor Tait, . . . . 359 
On the Coagulation of Egg and Serum Albumen, Vitellin, and Serum 
Globulin, by Heat. By John Berry Haycraft, M.D., D.Sc., and C. W. 
Duggan, M.B., . . . . . . . .361 
Some New Points in Connection with Muscle Contraction. By Alexander 
James, M.D. (With a Plate), . . . . . 385 
The Theory of Determinants in the Historical Order of its Development. By 
Thomas Muir, M.A., LL.D., . . . , . .389 
A Revision of the Genus Co'scinodiscus and some Allied Genera. By John 
Rattray, M.A., B.Sc., F.R.S.E. (With Three Plates), . . . 449 
