11 
Monday , 7 th February 1887. 
On Cases of Instability in Open Structures. By E. Sang, Esq., LL.D., 
On the Increase of Electrolytic Polarization with Time, By W. Peddie, Esq. 
Communicated by Professor Tait, ...... 
Astronomical Notes. By Ralph Copeland, Esq., Ph.D. Communicated by 
LordM‘LAREN, 
Monday , 21 st February 1887. 
Further Determinations of the Effect of Pressure on the Maximum Density 
Point of Water. By Professor Tait, ...... 
On the Height of the Land of the Globe above Sea-Level. By Dr J. Murray, 
Note on the Effects of Explosives. By Professor Tait, .... 
Report on Fossil Fishes collected in Eskdale and Liddesdale. Part I. Ganoidei 
— Supplement. By Dr Traquair, ...... 
On the Equilibrium of a Gas under its own Gravitation only. By Sir W. 
Thomson, ......... 
Monday , 7th March 1887. 
On the Equilibrium of a Gas under its own Gravitation only. Part II. By Sir 
W. Thomson, ......... 
History of the Theory of Determinants. Part I. Determinants in General: 
Hindenburg (1784) to Reiss (1829). By Dr Muir, .... 
Note on Solar Radiation. By John Aitken, Esq., .... 
On Laplace’s Nebular Theory, considered in relation to Thermodynamics. By 
Sir W. Thomson, ........ 
On a Class of Alternating Functions. By Dr Muir, .... 
Note on Hoar-Frost. By John Aitken, Esq., . . . . . 
On the Quotient of a Simple Alternant by the Difference-Product of the 
Variables. By Dr Muir, ....... 
Investigations on the Influence of certain Rays of the Solar Spectrum on Root 
Absorption and on the Growth of Plants. By Dr A. B. Griffiths, F.R.S.E., 
F.C.S. (Lond. and Paris), and Mrs A. B. Griffiths, 
Monday, 21 st March 1887. 
Variations in the Value of the Monetary Standard. By Professor Nicholson, . 
On Ice and Brines. By J. Y. Buchanan, Esq., ..... 
On the Distribution of Temperature in the Antarctic Ocean. By J. Y. 
Buchanan, Esq., ........ 
Monday, 4th April 1887. 
Note on a Formula for A n 0 i /n i when n, i are very large Numbers. By Professor 
Cayley, ......... 
On the Fossil Flora of the Radstock Series of the Somerset and Bristol Coal 
Fields. (Upper Coal Measures.) Part I. By R. Kidston, Esq., F.G.S., . 
On the Achromatism of the Four-Lens Eye-Piece : New Arrangement of the 
Lenses. By Edward Sang, Esq., LL.D., ..... 
An Effective Arrangement for Observing the Passage of the Sun’s Image across 
the Wires of a Telescope. By Edward Sang, 'E sq., LL.D., . - 
Observations on the Structural Characters of certain new or little-known Earth- 
worms. By Frank E. Beddard, Esq., M.A., Prosector to the Zoological 
Society of London, and Lecturer on Biology at Guy’s Hospital. (Plate V.), 
On the Geology and Petrology of St Abb’s Head.- By Prof. Geikie. (Plate VI.), 
Monday, 18 th April 1887. 
Professor Rowland’s Photographs of the Solar Spectrum. Exhibited by the 
Astronomer-Royal for Scotland, ..... 
On Ship-Waves. By Sir W. Thomson, ...... 
On the Instability in Fluid Motion. By Sir W. Thomson, 
Experimental Research in Magnetism. By D. S. Sinclair, Esq., Communi- 
cated by Principal Jamieson, . . . . . 
On the Summation of certain Series of Alternants. By A. H. Anglin, Esq., 
M. A., LL.B., &c., ........ 
Note on Cobaltic Alums. By Hugh Marshall, B.Sc., .... 
On the Effect produced on the Polarisation of Nerve by Stimulation. By G. 
N. Stewart, Esq., . ..... 
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