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b. On a Mechanism for Integrating the General Linear Differ-
ential Equation of the Second Order,
c. The Electric Conductivity of Nickel. By C. Michie Smith
and J. Gordon MacGregor,
On the Structure of the Body-wall in the Spionidæ. By W. C.
M'Intosh, M.D.,
Note on Circular Crystals. By E. W. Dallas,
Preliminary Note on the Flame produced by putting Common Salt
into a Fire. By C. M. Smith. Communicated by Professor
Tait,
PAGE
118
120
. 123
129
. 135
136
The Annual Periods of Thunder (with Lightning), Lightning (only), Hail, and Snow, at Oxford. By Alexander Buchan, M.A.,
Note on the Origin of Thunderstorms. By Professor Tait, .
An Application of Professor James Thomson's Integrator to harmonic
Analyses of Meteorological, Tidal, and other Phenomena, and to
the Integration of Differential Equations. By Sir W. Thomson, 138
Note on the Thermo-Electric Position of Cobalt. By Professor Tait, 138
On a Glass Digester in which to Heat Substances under Pressure.
By Dr E. A. Letts,
On the Connection between Cohesion, Elasticity, Dilatation, and
Temperature. By Professor George Forbes,
Notice of the Completion of the Works designed by Sir Charles A.
Hartley, F.R.S.E., for the Improvement of the Danube. By
David Stevenson, V.P.R.S.E.,
Chapters on the Mineralogy of Scotland.
By Professor Heddle.
Chapter I.-On the Rhombohedral Carbonates. Communicated
by Professor Tait,
On Thermo-Dynamic Motivity. By Sir W. Thomson,
On the Vortex Theory of Gases, of the Condensation of Gases on
Solids, and of the Continuity between the Gaseous and Liquid
State of Matter. By Sir W. Thomson,
On two new Laboratory Apparatus. By William Dittmar, .
On an Improved Form of Galvanic Battery. By J. Cook. Com-
municated by Professor Tait,
On the Properties of the Perigon Versor. By G. J. P. Grieve.
Communicated by Professor Kelland,
Descriptions of some new or imperfectly understood Forms of
Paleozoic Corals. By H. Alleyne Nicholson, M.D., D.Sc.,
F.R.S.E., Professor of Natural History in the University of St
Andrews, and James Thomson, F.G.S.,
On a Stable and Flexible Arch. By Professor Fleeming Jenkin,
Is the Gaelic Ossian a Translation from the English? By Professor
Blackie,
Notes on Dredging in Madeira. By the Rev. Robert Boog Watson,
B.A., F.R.S.E., F.G.S.,
139
141
142
144
Note on a New Fossil Foot-Print from the Permian Sandstone of
Dumfriesshire. By Patrick Dudgeon, F.R.S.E. (Plate I.),
On the Decennial Period in the Mean Amplitude of the Diurnal
Oscillation and Disturbance of the Magnetic Needle and of the
Sun-spot Area. By J. A. Broun, F.R.S.,
154
. 155
On the Parallel Roads of Lochaber. By David Milne Home, LL.D., 159.
Physical Observations in Northern Asia. By Professor G. Forbes,. 161
On Parallel Motions. By the Rev. John Wilson, M.A., Bannock-
burn Academy. Communicated by Professor Kelland,
Laboratory Notes. By Professor Tait-
161
170
a. On the Passage of the Electric Current from Amalgamated
Zinc Sulphate Solution. By J. G. MacGregor, M.A.,
b. On the Thermo-Electric Properties of Cobalt, &c. By
Messrs Knott, MacGregor, and C. M. Smith,
c. Measurements of the Potentials required for Long Sparks
of a Holtz Machine. By Messrs Macfarlane and Paton, 170
Note on Orthogonal Isothermal Surfaces. By Professor Tait,
Notice of some Recent Atmospheric Phenomena. By Professor Tait, 170
Report by the Society's Boulder Committee. (Plates II. and III.), 170
Election of Office-Bearers,
-
Com-
Opening Address by the Rev. W. Lindsay Alexander, D.D., . On the Roots of the Equation V pop = 0. By Gustav Plarr. municated by Professor Tait,
Applications of the Theorem that Two Closed Plane Curves intersect
an even number of times. By Professor Tait,
.
On the Distribution of Volcanic Debris over the Floor of the Ocean,
-its Character, Source, and some of the Products of its Disintegra-
tion and Decomposition. By John Murray, Esq. Communicated
by Sir C. Wyville Thomson,
On New and Little-known Fossil Fishes from the Edinburgh Dis-
trict. No. I. By R. H. Traquair, M.D., F.G.S., .
On the Ruff (Machetes Pugnax). By Professor Duns,
Communication from the President relative to the Administration
of the Government Fund of £4000,
. 203
. 204
237
247
On New and Little-known Fossil Fishes from the Edinburgh Dis- trict. No. II. By R. H. Traquair, M.D., F.G.S.,
Note on Clapeyron's Formula. By Professor Dewar,
Note on the Specific Gravity of Ocean Water. By J. Y. Buchanan, 283
Note on the Manganese Nodules found on the bed of the Ocean.
. 275
283
By J. Y. Buchanan,
287
Note on the Measure of Beknottedness. By Professor Tait, .
Note on the Effect of Heat on Infusible Impalpable Powders. By
Professor Tait,
289
298
Abstract of Additional Memoir on the Parallel Roads of Lochaber.
By D. Milne Home, LL.D.,
. 299
PAGR
On Some Effects of Heat on Electro-Static Attraction. By Prof. Tait, 302
On the Curves produced by Reflection from a Polished Revolving
Wire. By Edward Sang, Esq.,
302
On an Ammonia-Cupric Zinc Chloride. By E. W. Prevost, Ph.D., . 302
On a Peculiarity of the Diurnal Hygrometric Curve at Geneva. By
Alexander Buchan, Esq.,
On Knots. By Professor Tait,
Presentation of the Makdougall-Brisbane Prize to Alexander Buchan,
M.A.,
304
306
319, 486
On the Action of Sulphuretted Hydrogen on the Hydrate and on the
Carbonate of Trimethyl-Sulphine. By Professor Crum Brown, 319
On Links. By Professor Tait,
. 321
a. Measurement of the Potential required to produce Sparks
of various lengths, in Air at different pressures, by a
Holtz Machine. By Messrs Macfarlane and Paton,
b. The Thermal Conductivity of Gas Coke. By Messrs Knott
and Macfarlane,
c. Preliminary Experiments on the Currents produced by
contact of Wires of the same metal at different Tempera-
tures. By Messrs Knott and Macfarlane,
d. On the Relative Percentages of the Atmosphere and of the
Ocean which would flow into a given Rent in the Earth's
Surface. By Professor Tait,
On the Biliary Secretion with reference to the Action of Cholagogues.
By Professor Rutherford, F.R.SS. L. and E., and M. Vignal,
Specimen of Auriferous Quartz. By Patrick Dudgeon,
On a Problem of Arrangements. By Professor Cayley,
332
333
334
. 338
338
On the Construction of the Canon of Sines, for the Decimal Division
of the Quadrant. Edward Sang, Esq.,
On the Precautions to be taken in recording and using the Records
of Original Computations. Edward Sang, Esq.,
On an Unnamed Palæozoic Annelid. By Prof. Duns. (Plate IV.),
On Eisenstein's Continued Fraction. By Thomas Muir, M.A.,
Note on an Infinitude of Operations. By Thomas Muir, M.A.,
Note on Determinant Expressions for the Sum of a Harmonical
Progression. By Thomas Muir, M.A.,
Sevenfold Knottiness. By Professor Tait, Exhibition of a Large Map showing the Progress of the Geological Survey of Scotland. By Professor Geikie,
Notice of a Saline Water from the Volcanic Rocks of Linlithgow.
By Professor Geikie, F.R.S.,
343
349
352
. 359
359
On the Arrangement and Relations of the Great Nerve-Cords in the
Marine Annelids. By W. C. M'Intosh, M.D., F.R.S.E., F.L.S., . 372
On the Application of Graphic Methods to the Determination of the
Efficiency of Machinery. By Professor Fleeming Jenkin,
On Professor Tait's Problem of Arrangement.
381
By Thomas Muir,
388
On Mr Muir's Discussion of Professor Tait's Problem of Arrange- ments. By Professor Cayley,
On Amphicheiral Forms and their Relations. By Professor Tait, 391
On the Toothing of Un-round Discs which are intended to roll upon
each other. By Edward Sang,
393
On the Mineralogy of Scotland. Chapter II. By Professor Heddle, 393
Least Roots of Equations. By J. D. Hamilton Dickson,
On New and Little-known Fossil Fishes from the Edinburgh Dis- trict. No. III. By Dr R. H. Traquair. (See Appendix),
On Ocean Circulation. By John Aitken,
On a New Investigation of the Series for the Sine and Cosine of an
Arc. By Edward Sang,
Note on the Bifilar Magnetometer. By J. A. Broun, F.R.S. Com-
Addition to the paper "On the Establishment of the Elementary
Principles of Quaternions." By G. Plarr.
XXVII. of the Transactions of the Society.
Published in Vol.
Communicated by
400
402
Note on Mr Muir's Solution of a "Problem of Arrangement." By
Professor Cayley,
Preliminary Note on a New Method of Investigating the Properties
of Knots. By Professor Tait,
On the Cranial Osteology of Rhizodopsis, and on some points in the
Structure of Rhizodus. By Dr R. H. Traquair. (See Appendix), 403
Notice of Recent Earthquake Shocks in Argyleshire in 1877. By
David Stevenson, Civil Engineer,
Additional Remarks on Knots. By Professor Tait,
On the Structure and Relations of the Genus Holopus. By Sir C.
Wyville Thomson, F.R.S.,
On the Diurnal Oscillations of the Barometer. Part II. By
Alexander Buchan, M.A.,
On the Air Dissolved in Sea-Water. By J. Y. Buchanan,
Why the Barometer does not always indicate real Vertical Pressure:
A continuation of the Paper laid before the Royal Society of
Edinburgh in July 1875, in which, in addition to several other
points, this was attempted to be shown. It is now more fully
written out. By Robert Tennent, .
410
412
a. On an Effect of Heat on Electro-Static Action,
415
b. On Dr Blair's Scientific Aphorisms in connection with the
Ultra-Mundane Particles of Le Sage,
Note on an Identity. By Professor Tait,
APPENDIX :-
The Thermo-Electric Properties of Cobalt. By Messrs C. G.
Knott, J. Gordon MacGregor, and C. Michie Smith, .
Notice of some Recent Atmospheric Phenomena. By Professor
On New and Little-known Fossil Fishes from the Edinburgh
District. No. III. By R. H. Traquair, M.D., F.G.S.,
On the Cranial Osteology of Rhizodopsis, and on some points in
the Structure of Rhizodus. By Dr R. H. Traquair,
Opening Address by the Vice-President, Principal Sir Alexander
Grant, Bart.,
Remarks by Sir William Thomson on delivering the Makdougall-
Brisbane Prize to Mr Buchan,
€ 416
421
425
427
444
472
486
Report of the Deputation to Upsala. By Alexander Buchan, M.A., 521
On a Method of Determining the Cohesion of Liquids. By J. B.
Hannay, F.C.S.,
. 526
Note on Vector Conditions of Integrability. By Professor Tait, . 527
On Gladstone's Theory of Colour-Sense in Homer. By Professor
Note on a Geometrical Theorem. By Professor Tait,
On the Tabulation of all Fractions whose values are between two
prescribed limits.
By Edward Sang,
Can the Law of Multiple Proportions be demonstrated from
Analytical Data? By W. Dittmar,
533
. 533
536
. 536
On the Solid Fatty Acids of Coco-Nut Oil. By G. Carr Robinson,. 537
Suspension, Solution, and Chemical Combinations. By William
Durham,
Note on the Surface of a Body in terms of its Mass. By Professor
On a White Sunbow. By Sir Robert Christison, Bart., Professor
Tait, Mr J. Christison, Mr Buchan, and Dr Ferguson,
Letter on the Phonograph. By H. E. Rosevelt,
Address by Sir Wyville Thomson on delivering the Neill Prize to
Dr Traquair,
Chapters on the Mineralogy of Scotland. Chapter III.—The Garnets.
By Professor Heddle,
On the Strength of the Currents required to work a Telephone.
Experiments with the Telephone. By James Blyth. Communicated
On the Theory of the Telephone. By Professor George Forbes, 555
Some Experiments with the Telephone. By John G. M'Ken-
drick, M.D.,
. 558