ROYAL SOCIETY OF EDINBURGH. 
SESSION 1865-66. 
CONTENTS. 
Monday^ ^th December 1865. 
PAGE 
Opening Address. Session 1865-66. By Sir David 
Brewster, President, . . . .458 
Donations to the Library, . . . . 483 
Monday, IQth December 1865. 
Address on the Forces concerned in the Laying and Lift- 
ing of Deep-Sea Cables. By Professor William 
Thomson, . . , . . . 495 
On tlie Dynamical Theory of Heat. Part VII. By Pro- 
fessor William Thomson, . . . .510 
The Doctrine of Uniformity'' in Geology briefly refuted. 
By Professor William Thomson, . . . 512 
Note on the Atomicity of Sulphur. By Dr Alexander 
Crum Brown, . . . . .513 
Note on a paper by Balfour Stewart, Esq., in the Trans- 
actions of the Royal Society of Edinburgh, by I. Tod- 
hunter, Esq,, M.A., St John’s College, Cambridge. 
Communicated by Professor Tait, . . .517 
Donations to the Library, . . . .518 
Tuesday f 'Id January 1866. 
Additional Observations on the Polarisation of the Atmo- 
sphere made at St Andrews in 1841, 1842, 1843, 
1844, and 1845. By Sir David Brewster, K.H., 
D.C.L., F.R.S., &c., . . . . .520 
[Turn over. 
