11 
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On the Principles of the Logical Algebra ; with Applications. 
Part II. By Alexander Macfarlane, M.A., D.Sc., . 61 
Monday , 3 d February 1879. 
Presentation of the Keith Medal to Professor Heddle, . ■ 62 
Chapters on the Mineralogy of Scotland. Chapter V. By 
Professor Heddle, . . . . .64 
On the Carboniferous Volcanic Rocks in the Basin of the 
Firth of Forth — their Structure in the Field and under 
the Microscope. By Professor Geikie, F.R.S., . 65 
Exhibition of Specimens of Auriferous Quartz from the 
Leadhills District. By Patrick Dudgeon, of Cargen, . 67 
Monday , 17^A February 1879. 
On some Physiological Results of Temperature Variation. 
By J. B. Haycraft, M.B., C.M. Communicated by 
Professor Turner, . . . . .68 
On the Elasticity of the Walls of the Arteries and Veins. 
By Dr Roy. Communicated by Dr George W. Balfour, 68 
Further Vote on the Distribution of Temperature under the 
Ice in Linlithgow Loch. By Mr J. Y. Buchanan, , 68 
Monday , 3 d March 1879. 
Heating and Ventilating of Churches and other Buildings : 
Report of a series of Experiments made in a Hall in 
Upper Grove Place. By Charles J. Henderson, 
Edinburgh. Communicated by Professor Jenkin, . 72 
Chapters on the Mineralogy of Scotland. ' Chapter VI. — 
“ Chloritic Minerals,” By Professor Heddle, , 76 
On Deep-Sea Thermometers. By Mr J. Y. Buchanan, . 77 
Preliminary Hote on a Crystalline Compound formed in 
Water containing Sulphuretted Hydrogen and Mer- 
captan in Solution. By J. Adrian Blaikie, B.Sc., . 87 
Laboratory Votes : — Electro Motive Force of Gramme 
Machine at Different Speeds. Law of Extension of 
India-rubber at Different Temperatures. By Professor 
Tait, ....... 90-92 
Election of Four Foreign Honorary Fellows, . . 92 
Monday , 17 th March 1879. 
On Gravitational Oscillations of Rotating Water. By Sir 
William Thomson, .... 92 
On the Effects of Chloroform, Ethidene Dichloride, and 
Ether on Blood-Pressure. By Joseph Coats, M.D., 
William Ramsay, Ph.D., and John G. M ‘Kendrick, 
M.D., University of Glasgow. Communicated by 
Professor M‘Kendrick, . . . .100 
Experiments with Rotating Discs. By Mr John Aitken. 
Communicated by Professor M ‘Kendrick, . .102 
General Theorems on Determinants. By Thomas Muir, M. A. , 1 02 
Preliminary Vote on Alternants. By Thomas Muir, M.A., 102 
For continuation of Contents , see pp. 3 and 4 of Cover 
