Contents , 
Vll 
PAGE 
On a supposed Resemblance between the Marine Faunas of the 
Arctic and Antarctic Regions, By D’Arcy Wentworth Thomp- 
son, C.B., ........ 311 
Note on Dew Bows. By C. G. Knott, D.Sc., and R. A. Lundie, 
M.A., B.Sc., M.B., C.M., 350 
On the Eliminant of a Set of Quadrics, Ternary or Quaternary. By 
E. J. Nanson. ( Communicated by Professor Chrystal), . . 353 
Note on the Compressibility of Solutions of Sugar. By Professor Tait, 359 
Dust Figures of Electrostatic Lines of Force. By David Robertson, 
A. G.T.C. ( Communicated by Professor Jamieson), . . .361 
On the Reflexion and Refraction of Solitary Plane Waves at a Plane 
Interface between two Isotropic Elastic Mediums — Fluid, Solid, 
or Ether. By Lord Kelvin, G.C.Y.O., .... 366 
Symmetrical Solution of the Ellipse-Glissette Elimination Problem. 
By the Hon. Lord M‘Laren, . . . . .379 
The Action of Persulphates on Iodine. By Hugh Marshall, 
D.Sc., 388 
On some Oceanographic Problems. By Vice-Admiral S. Makaroff, 
Imperial Russian Navy. (Plates I. to XII.), . , . 391 
On the Survey by the S.S. “ Britannia” of the Cable Route between 
Bermuda, Turk’s Islands, and Jamaica. By R. E. Peake, M.Inst. 
C.E. With Descriptions by Sir John Murray, K.C.B., F.R.S., of 
the Marine Deposits brought home. ( Communicated by Sir John 
Murray. (With a Map), ...... 409 
The Energy of the Rontgen Rays. By Rev. Alexander Moffat, M. A., 
B. Sc. ( Communicated by Dr C. G. Knott), , . . 430 
On Nernst’s “Osmotic Experiment” and a Definition of Osmotic 
Pressure. By Professor Crum Brown, .... 439 
Determination of the Sign of a Single Term of a Determinant. By 
Thomas Muir, LL.D., ...... 441 
Tidal Currents of the North Sea. By Alexander Buchan, LL.D., 
F. R.S., 478 
On the Development and Morphology of the Marsupial Shoulder- 
Girdle. By R. Broom, M.D., B.Sc. {Communicated by Sir 
William Turner), . , . . . . .482 
Equilibrium between Sulphuric Acid and Sulphates in Aqueous 
Solution. By Sydney A. Kay, B.Sc. {Communicated by Pro- 
fessor Walker), ....... 484 
Application of Sellmeier’s Dynamical Theory to the Dark Lines 
D lt D 2 produced by Sodium- Vapour. By Lord Kelvin, G.C.V.O., 
P.R.S.E., . . . , . . , .523 
Note on Polarisation Phenomena observed in Quantitative 
Electrolytic Determinations. By Hugh Marshall, D.Sc., . . 532 
The Multiplication of an Alternant by a Symmetric Function of the 
Variables. By Thomas Muir, LL.D., .... 539 
Note on a Persymmetric Eliminant. By Thomas Muir, LL.D., . 543 
