VI 
Contents. 
PAGE 
On Methods in Definite Integrals. By Professor Tait, . .271 
Measures of certain Eadiometer Constants. By Professor Tait, . 272 
Further Eesearches on Minding’s Theorem. By Professor Tait, . 272 
On the Transmission of Sound by Loose Electrical Contact. By 
James Blyth, M.A., . . . . . . .272 
Bemarks 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- Eoyal 
for Scotland, 274 
On another Method of Preparing Methylamine. By E. Milner 
Morrison, D.Sc., ....... 275 
On the Composition of “ Eeh,” 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 Eobert Tennent, F.M.S., .... 280 
On the Solution of the Simultaneous Equations : — ax + bij = 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 Eight 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.E.S.E., F.C.S., and Eobert Anderson, 
. 359 
By C. G. Knott, Sc.D. Com- 
By Professor 
Eesearches on Contact Electricity, 
municated by Professor Tait, 
On an Instrument for detecting Coal-Gas in Mines, 
George Forbes, ....... 
On Comets. By Professor Tait, ..... 
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, ........ 
The Trigonometrical Survey of Palestine. By Lieut. Claude Eeignier 
Conder, E.E., ....... 
On Minding’s System of Forces. By Professor Chrystal, 
Mathematical Notes. By Professor Tait — 
a. On a Problem in Arrangements, .... 
b. On a Graphical Solution of the Equation V ptpp = 0 , 
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, . . . . 
362 
365 
367 
370 
379 
397 
400 
402 
405 
A New Method of investigating Eelations between Functions of the 
Eoots of an Equation, and its Coefficients. 
M.A., .... 
By J. D. H. Dickson, 
. 405 
Kemarks on Mr Crookes’ Eecent Experiments. By Prof. George Forbes, 405 
