Index. 
769 
Christison (Sir Robert). Note on a 
White Sunbow, 542. 
Circles, — Properties of two sets of three 
Concentric Circles, intersecting one 
another, by Professor Tait, 533. 
Clapeyron’s Formula, Note on, by Pro- 
fessor Dewar, 283. 
Closed Plane Curves. See Curves. 
Cobalt, Note on the Thermo-Electric 
Position of, by Professor Tait, 138. 
Note on the Thermo-Electric 
Properties of, by Messrs Knott, 
MacGregor, and C. M. Smith, 170. 
Cocoa-Nut Oil, On the Solid Fatty 
Acids of, by G. Carr Robinson, 537. 
Cohesion. — On the connection between 
Cohesion, Elasticity, Dilatation, 
and Temperature, by Professor 
George Forbes, 141. 
of Liquids, by J. B. Hannay, 
526. 
Colour. — Method of Studying the 
Binocular Vision of Colour, by 
Professor M‘Kendrick, 654. 
in Practical Astronomy, by 
Professor Piazzi Smyth, 721. 
Columnar Vortices, Vibrations of a 
Triad of, by Sir William Thomson, 
660. 
Combinations (Chemical), 537. 
Conductivity of Stretched Silver 
Wires, by J . G. MacGregor, M. A., 79. 
Coniferae, On the Defoliation of the, 
by Dr Stark, 85. 
Constant (Cyclic) of a Vortex, p. 70. 
Continued Fractions, Transformation 
of Infinite Series into, by Thomas 
Muir, M.A., 117. 
Cook (J.) on an Improved Form of 
Galvanic Battery, 148. 
Corals, On New Forms of Palaeozoic, 
by Professor Alleyne Nicholson 
and James Thomson, 149. 
Core, or Vortex Core, by Sir W. 
Thomson, 69. 
Coventry (Andrew), Obituary Notice 
of, by Sir Alex. Grant, 506. 
Crawford (Dr Thomas Jackson), Obit- 
uary Notice of, 17. 
Crystals, Note on Circular, by E. W. 
Dallas, 129. 
Curves. — Applications of Theorem 
that Two Closed Plane Curves 
intersect an even number of times, 
by Professor Tait, 237. 
• On the Curves produced by Re- 
flection from a Polished Revolving 
Wire, by Edward Sang, 302. 
Curves. — Tables of Ballistic Curves 
applied to Gunnery, by E. Sang, 637. 
On a Peculiarity of the Diur- 
nal Hygrometric Curves at Geneva, 
by Alexander Buchan, 304. 
Cyclic Constant of a Vortex, 69. 
Dallas (E. W.), Note on Circular 
Crystals, 129. 
Danube, Works for the Improvement 
of the, designed by Sir Charles A. 
Hartley, by David Stevenson, 142. 
De Candolle (Alphonse) elected an 
Honorary Fellow, 287. 
De la Rive (M.) on Sounds emitted 
by Induction Coils, 627, 628. 
Determinants. — On Determinant Ex- 
pressions for the Sum of aHarmoni- 
cal Progression, by T. Muir, 361. 
On a Class of Determinants, 
by J. D. H. Dickson, 714. 
Dewar (Professor) on Clapeyron’s 
Formula, 283. 
Diamagnetic Rotation, by Prof. 
George Forbes, M.A., 85. 
Dickson (J. D. Hamilton) on the 
Least Roots of Equations, 393. 
on a Class of Determinants, 714. 
Differential Equation of Second Order. 
See Equation. 
Digester. — On a Glass Digester in 
which to heat Substances under 
Pressure, by Dr E. A. Letts, 139. 
Dilatation. — On the Connection be- 
tween Cohesion, Elasticity, Dilata- 
tion, and Temperature, by Professor 
George Forbes, 141. 
Disruptive Discharge of Electricity, 
by Alex. Macfarlane, M.A., and P. 
M. Playfair, M.A., 563, 721. 
Dittmar (William) on New Forms of 
Precision Balance and Gas governor, 
145. 
Can the Law of Multiple 
Proportions be demonstrated from 
Analytical Data ? 536. 
Diurnal Oscillations of the Barometer, 
Part II., by Alex. Buchan, M.A., 
410. 
Donations to the Library, 739-765. 
Dove (Heinrich Wilh.) elected an 
Honorary Fellow, 43. 
Drummond (Rev. David Thomas Ker), 
Obituary Notice of, by Professor 
Balfour, 518. 
Drummond (George Stirling Home), 
Obituary Notice of, by Dr W. L. 
Alexander, 218. 
