PAGE 
t ■ 
111 
, The Effect of Differential Mass-Motion on the Permeability of a Gas. By Prof. 
,/ Tait, 249 
' On a New Diffnsiometer and other Apparatus for Liquid Diffusion. Part II. 
j By J. J. Coleman, Esq., F.K.S.E., F.I.C., F.C.S., . . . . 249 
; Note on the Determination of Diffnsivity in Absolute Measure from Mr Cole- 
man’s Experiments. By the Pkesident, . . . . .256 
' On the Soaring of Birds : being an Extract from a Letter of the late William 
Fronde to Sir W. Thomson, of 5th February 1878, received after' Mr 
Fronde’s death, . . . . . . . . 256 
Preliminary Note on New Determinations of the Electric Kesistance of Liquids. 
By W. Peddie, Esq., B.Sc. . . . . . . . 259 
Notice of the Kecent Earthquake in Scotland , with Observations on those 
since 1882. By Charles A. Stevenson, Esq., B.Sc.„ Assoc. M.Inst.C.E. 
(Plate V.), 259 
Monday, 'Zncl April 1888. 
Analysis of the “Challenger” Meteorological Observations. By Dr Buchan, . 267 
On the Conjugated Sulphates of the Copper-Magnesium Group. By Prafulla 
Chandra Kay, Esq., ..... . . . 267 
On the Chemical Composition of the Water composing the Clyde Sea Area. 
Part II. By Adam Dickie, Esq., ...... 283 
On the Principles of Animal Morphology. By Professor Wilhelm His of 
Leipzig. Letter to Dr John Murray, H.P.K.S.Ed. Communicated by Pro- 
fessor Sir William Turner, ..*.... 287 
Mathematical Notes. By Professor Tait, ..... 298 
Monday, \Qth April 1888. 
Analysis of the “ Challenger ” Meteorological Observations. By Dr Buchan, . 298 
Description of the Rocks of the Island of Malta, and Comparison with Deep- 
Sea Deposits. By Dr John Murray, ..... 298 
An Electrical Method of Reversing Deep-Sea Thermometers. Bj" Professor 
Chrystal, ......... 298 
On a Class of Alternants expressible in terms of Simple Alternants. By 
Thomas Muir, LL.D., ....... 298 
Quaternion Note. By Professor Tait, ...... 308 
Exhibition of Specimens of Eggs of Cod and Haddock. By Dr John Murray, 308 
Monday, 1th May 1888. 
On the Secretion of Lime by Animals. By Robert Irvine, Esq., F.R.S.E., 
F.C.S., and Dr G. Sims Woodhead, . . . . . . 308 
On the Solubility of Carbonate of Lime under different forms in Sea-Water. 
By Robert Irvine, Esq.,F.R.S.E., and George Young, Esq., . . 316 
On a Case of Absence of the Corpus Callosum in the Human Brain. By Dr 
Alexander Bruce. (Plates VI.-XIII.), ..... 320 
Distribution of some Marine Animals on the West Coast of Scotland. By Dr 
John Murray, . . . ... . . 341 
Remarks on the Larvae of certain Schizopodous Crustacea from the Firth of Clyde. 
By W. E. Hoyle, Esq., M.A., . . . . . " . 341 
Monday, 2 Hi May 1888. 
Exhibition of Photographs of the Nice Observatory. By the Astronomer- 
Royal FOR Scotland, . . . . . . . 342 
Note on the Hydrodynamical Equations. By Professor Cayley, Hon. F.R.S.E., 342 
The History of Volcanic Action during the Tertiary Period in the British 
Islands. By Dr Archibald Geikie, F.R.S., . . . . 344 
Monday, 4th June 1888. 
Exhibition of Photographs of large Sections of the Lung. By Dr G. Sims 
Woodhead, ......... 348 
Mean Scottish Meteorology for the last Thirty-two Years, discussed for Annual 
Cycles, as well as Supra-annual Solar Influences, on the basis of the Obser- 
vations of the Scottish Meteorological Society, as furnished to, and published 
by, the Registrar-General of Births, Deaths, &c., in Scotland, after being- 
computed for that Office at the Royal Observatory, Edinburgh. By the 
Astronomer-Royal for Scotland, ...... 348 
On Sir John Leslie’s Computation of the Ratio of the Diameter of a Circle to its 
Circumference. By Edward Sang, LL.D., ..... 343 
