VI 
Contents. 
PAGE 
On Methods in Definite Integrals. By Professor Tait, . .271 
Measures of certain Radiometer Constants. By Professor Tait, . 272 
Further Researches on Minding’s Theorem. By Professor Tait, . 272 
On the Transmission of Sound by Loose Electrical Contact. By 
James Blyth, M.A., ....... 272 
Remarks by the Vice-President, David Milne Home, LL.D., on 
delivering the Makdougall-Brisbane Prize to Professor Geikie, . 272 
The Solar Spectrum in 1877-8 ; with some Idea of its Probable 
Temperature of Origination. By Piazzi Smyth, Astronomer-Royal 
for Scotland, . . . . . . 274 
On another Method of Preparing Methylamine. By R. Milner 
Morrison, D.Sc., ....... 275 
On the Composition of “ Reli,” an Efflorescence on the Soil of certain 
Districts in India, By J. Gibson, Ph.D., . . . .277 
On Spherical Harmonics. By Professor Tait, . . .280 
Proposed Theory of the Progressive Movement of Barometric De- 
pressions. By Robert Tennent, F.M.S., .... 280 
On the Solution of the Simultaneous Equations; — ax+by — c and 
dx+ey=f, when the Symbols denote Qualities. By Alexander 
Macfarlane, D.Sc., . . . . . . . 283 
Donations to the Library during Session 1878-79, . . 285-314 
Election of Office-Bearers, 1879-80, ..... 315 
Opening Address by the President, The Right Hon. Lord Moncreiff, 316 
Obituary Notices of Fellows, Session 1879-80, . . . 321 
On the Expansion of Cast Iron while Solidifying. By J. B. Hannay, 
F.R.S.E., F.C.S., and Robert Anderson, .... 359 
Researches oil Contact Electricity. By C. G. Knott, Sc.D. Com- 
municated by Professor Tait, ..... 362 
On an Instrument for detecting Coal-Gas in Mines, By Professor 
George Forbes, ....... 365 
On Comets. By Professor Tait, ..... 367 
Additional Observations on Fungus Disease of Salmon and other 
Fish. By A. B. Stirling, Assistant- Curator in the Museum of 
Anatomy in the University of Edinburgh. Communicated by Prof. 
Turner, ........ 370 
The Trigonometrical Survey of Palestine. By Lieut. Claude Reignier 
Conder, R.E., 379 
On Minding’s System of Forces. By Professor Chrystal, . . 397 
Mathematical Notes. By Professor Tait — 
a. On a Problem in Arrangements, .... 400 
b. On a Graphical Solution of the Equation Vpfpp = 0, . 402 
Part of the Material employed by Principal Forbes in Tamping the 
Bore for his Earth Thermometers at the Edinburgh Observatory 
was exhibited in its altered state, ..... 405 
A New Method of investigating Relations between Functions of the 
Roots of an Equation, and its Coefficients. By J. D. H. Dickson, 
M.A., . . . . . . . .405 
Remarks on Mr Crookes’ Recent Experiments. By Prof. George Forbes, 405 
