Contents. 
iy 
PAGE 
Chemical Affinity and Solution. By W. Durham, Esq., . . 48 
Thermometer Screens. Part IY. By John Aitken, Esq. (Plates 
II., III., IV.), . 53 
On the General Effects of Molecular Attraction of Small Bange on 
the Behaviour of a Group of Smooth Impinging Spheres. By 
Professor Tait, . . . . . . .85 
On a New Formula for the Pressure of Earth against a Retaining 
Wall. By A. C. Elliott, Esq., B.Sc., C.E. Communicated by 
Professor Armstrong, . . . . . .85 
The Conducting Paths between the Cortex of the Cerebrum and the 
Lower Centres, in relation to their Function. By Professor D. J. 
Hamilton, . . . . . . . .97 
Researches on Micro-Organisms, including ideas of a New Method 
for their Destruction in Certain Cases of Contagious Disease. By 
Dr A. B. Griffiths, F.R.S. (Edin.), . . . .97 
On Cases of Instability in Open Structures. By E. Sang, Esq., 
LL.D., . . . . . . . .106 
On the Increase of Electrolytic Polarization with Time. By W. 
Peddie, Esq. Communicated by Professor Tait, . . . 107 
Astronomical Notes. By Ralph Copeland, Esq., Ph.D. Communi- 
cated by Lord McLaren, . . . . . .110 
Further Determinations of the Effect of Pressure on the Maximum 
Density Point of Water. By Professor Tait, . . .110 
On the Height of the Land of the Globe above Sea-Level. By Dr J. 
Murray, ........ 110 
Note on the Effects of Explosives. By Professor Tait, . .110 
Report on Fossil Fishes collected in Eskclale and Liddesdale. Part 
I. Ganoidei — Supplement. By Dr Traquair, . . .111 
On the Equilibrium of a Gas under its own Gravitation only. By 
Sir W. Thomson, ....... Ill 
On the Equilibrium of a Gas under its own Gravitation only. Part 
II. By Sir W. Thomson, . . . . . .118 
History of the Theory of Determinants. Part I. Determinants in 
General : Hindenburg (1784) to Reiss (1829). By Dr Muir, . 118 
Note on Solar Radiation. By John Aitken, Esq., . . .118 
On Laplace’s Nebular Theory, considered in relation to Thermo- 
dynamics. By Sir W. Thomson, . . . . .121 
On a Class of Alternating Functions. By Dr Muir, . . .121 
Note on Hoar-Frost. By John Aitken, Esq., . . .121 
On the Quotient of a Simple Alternant by the Difference-Product 
of the Variables. By Dr Muir, . . . . .125 
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. & Paris), and Mrs A. B. 
Griffiths, . . . . . . . .125 
