Vlll 
Contents. 
PAGE 
A Critical Examination of two Cases of unusual Atmospheric Re- 
fraction described by Professor Vince. By Mr Edward Sang, . 581 
On a Case of Dyspeptic Vertigo. By Professor Crum Brown, . 594 
Note on the Carboniferous Rocks of the South of Scotland. By 
Archibald Geikie, F.R.S., . . . . . . 598 
Additional Contributions to our Knowledge of the Fossil Fishes of 
Eskdale and Liddesdale. By Dr R. H. Traquair, . . . 603 
Further Researches among the Crustacea and Scorpions of the Car- 
boniferous Rocks of the Scottish Border. By Mr B. N. Peach, . 603 
Report on the Fossil Plants collected by the Geological Survey 
of Scotland in Eskdale and Liddesdale. By Robert Kidston, 
F.R.P.S., . . . . . . . .603 
On the Formation of Serpentine from Dolomite. By J. J. Dobbie, 
M.A., D.Sc., Assistant to the Professor of Chemistry, University 
of Glasgow, and G. G. Henderson, B.Sc., . . . . 606 
On a Rotating Mass of Fluid. By Sir William Thomson, . . 610 
Notes on Atmospheric Electricity. By Professor C. Michie Smith, . 613 
Recent Test of Swan’s Lamp for Fall of Resistance, with increase of 
Electromotive Force, and Ratio of Candle-power to work ex- 
pended. By Mr A. Jamieson. Communicated by Professor 
Chrystal, ........ 615 
Communication of Preliminary Observations made by the Com- 
mittee appointed by the Highland and Agricultural Society, to 
investigate the Nature and Causes of the Sheep Diseases known as 
Louping-ill and Braxy, . . . . . .615 
On the Definite Article in Greek, with special reference to the 
Revised Version of the New Testament. By Professor Blackie, . 622 
On the Action of the Microphone. By Professor James Blyth, 
M.A., . . . . . . .622 
Experiments to Determine the Lowering of the Maximum Density 
Point of Water by Pressure. By Professor D. H. Marshall, Pro- 
fessor C. Michie Smith, and Mr R. T. Omond, . . . 626 
On some Points in the Meteorology of Madeira, both Absolute and 
Comparative. By the Astronomer-Royal for Scotland, . . 629 
On the Anatomy and Histology of Pleurochceta Moseleyi. By F. E. 
Beddard, B.A., New College, Oxford, .... 629 
Geological Notes. By Professor Heddle, .... 630 
Note on the Absorption of Sea Water. By Mr John Aitken, . 637 
Exploration of the Faroe Channel, during the Summer of 1880, 
in H.M.’s hired ship “Knight Errant.” By Staff-Commander 
Tizard, R.N., and Mr John Murrav ; with Subsidiary Reports. 
(Plate VI.), . . . / . . .638 
Notice of the Solar Eclipse of the 17th May, with Remarks on the 
Calculation. By Mr Edward Sang, . . . . 720 
Some Experiments on a New Secondary Cell. By Mr A. P. 
Laurie, B.Sc., . . . . . . .724 
Obituary Notices of Mr David Smith, Dr William Lauder Lindsay, 
and Professor Benjamin Peirce, . . . . .734 
