IV 
Contents. 
PAGE 
On Ancient Tenure of Land in Scotland. By Mr G. Anldjo 
Jamieson, . . . . . . * . .99 
On the Microscopical ApjDearances of Striped Muscular Fibre during 
Eelaxation and Contraction. By Professor Eutherford, . .126 
Election of Honorary Fellows, . . . . .126 
On the so-called Bicipital Kibs. By Professor William Turner, . 127 
Oscillations and Waves in an Adynamic Gyrostatic System. By Sir 
William Thomson, . . . . . . .128 
On Gyrostatics. By the Same, ..... 128 
On the Dynamical Theory of Dispersion. By the Same, . .128 
On the Impossibility of Inverted Images in the Air. By Edward 
Sang,. ........ 129 
On the Thermo-electric Positions of pure Ehodium and Iridium. 
By Professor Tait, . . . . , . .136 
Observations on the Growth of Wood in Deciduous and Evergreen 
Trees. By the late Sir E. Christison, Bart, and Dr Christison, . 136 
The Variation of Temperature, with Sun-Spots. By Mr A. Buchan, 136 
On some Laboratory Arrangements. By Dr John Gibson, . .137 
On the Thermo-electric Position of pure Cobalt. By Professor Tait, 141 
Transmission of Power by Alternate Currents. By Professor George 
Forbes, ........ 141 
On the Homology of the Neural Gland in the Tunicata with the 
Hypophysis Cerebri. By W. A. Herdman, D.Sc., F.L.S., Pro- 
fessor of Natural History in University College, Liverpool, . 145 
On the Quaternion Expression of Finite Displacements of a System 
of Points of which the Mutual Distances remain Invariable. By 
Gustave Plarr, Docteur ^s Sciences. Communicated by Prof. Tait, 151 
On some Properties of the Line of Simple Flexure. By Edward 
Sang, C.E. (Plates I.*-IIL), ..... 172 
On the Measurement of Eesistance in Electrolytes, By Cargill G. 
Knott, D.Sc., F.E.S.E., 178 
The Electrical Eesistance of Hydrogenised Palladium. By Cargill 
G. Knott, D.Sc., F.E.S.E., 181 
Note on Plane Algebra. By A. Macfarlane, M.A., D.Sc., . . 184 
On Heat-Conduction in Heterogeneous Bodies, as modified by the 
Peltier and Thomson effects. By Professor Tait, . . .186 
Note on the Thermo-electric Position of j)ure Euthenium. By Prof. 
Tait, ........ 186 
At the request of the Council Professor Geikie delivered an Address 
on Eecent Advances in European Pleistocene Geology, . .186 
On the Moon and the Weather. By John Aitken, . . . 187 
The Acids of Opium. By D. B. Dott, . . . .189 
Direct Observations of the Effect of Pressure on the Maximum 
Density-Point of Water. By Professor Tait, . . . 192 
The Diurnal Oscillations of the Barometer. Part II. By Mr A. 
Buchan, ........ 3«93 
Ninth Eeport of the Boulder Committee. Communicated by Mr 
Milne Home, . . . . . . .193 
