CONTENTS. 
Election of Office-Bearers, ...... 
Opening Address. Session 1875-76. By the Senior Vice-President, 
David Milne Home, Esq. of Wedderburn, LL.D., 
The Volcanic Eruptions of Iceland in 1874 and 1875. By Captain 
Burton. (With two Maps of Iceland), .... 
Vortex Statics. By Sir William Thomson, .... 
Experiments illustrating Rigidity produced by Centrifugal Force. 
By John Aitken, Esq., .... 
On the Electrical Conductivity of Stretched Silver Wires. By J. G-. 
MacGregor, M.A., B.Sc. Communicated by Professor Tait, 
On the Defoliation of the Coniferae. By Dr Stark, . 
On Diamagnetic Rotation. By George Forbes, Esq., M.A., F.R.A.S., 
On the Linear Differential Equation of the Second Order. By Pro- 
fessor Tait, ........ 
On Two-dimensional Motion of mutually influencing Vortex- 
columns, and on Two-dimensional Approximately Circular Motion 
of a Liquid. By Sir W. Thomson, .... 
On the Origin of Language — Max-Miiller, Whitney. By Professor 
Blackie, ........ 
Note on Certain Formulae in the Calculus of Operations. By Pro- 
fessor Stokes, Hon. F.R.S.E. (In a Letter to Professor Tait), 
A Further Contribution to the Placentation of the Cetacea ( Monodon 
Monoceros ). By Professor Turner, .... 
Observations on the Zodiacal Light. By C. Michie Smith. Com- 
municated by Professor Tait, . . . . . 
Note on the Volcanoes of the Hawaiian Islands. By J. W. Nichol, 
F.R.A.S. Communicated by Professor Tait, 
New General Formulae for the Transformation of Infinite Series 
into continued Fractions. By Thomas Muir, M.A., 
Laboratory Notes. By Professor Tait — 
a. On a Possible Influence of Magnetism on the Absorption 
of Light, and some correlated subjects, 
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