778 
Index. 
Quaternion Method. — On a Graphical 
Solution of the Equation Yp<pp = 0, 
by Professor Tait, 402. 
Radiometer Constants, Measures of, by 
Professor Tait, 272. 
Ramsay (Dr William) on the Effects of 
Chloroform, Ethidene Dichloride, and 
Ether on Blood Pressure, 100. 
Regnault (Henri Victor), Obituary Notice 
of, 5. 
Reh. — On the Composition of Reh, an 
Efflorescence on the Soil of certain Dis- 
tricts of India, by Dr J. Gibson, 277; 
Analysis of Reh, 279. 
Relationship, A Calculus of, by Dr 
Alexander Macfarlane, 224. 
Richardson (Dr Benjamin Ward) con- 
tributes an Obituary Notice of Sir 
Walter C. Trevelyan, Bart., 354. 
Ripidolite, 76. 
Rhopalcea Neapolitana , 719, 720. 
Roberts (Martyn John), Obituary Notice 
of, 26. 
Robertson (General A. Cuningham) con- 
tributes Obituary Notice of Emslie 
W. Dallas, Esq., 340. 
Robinson (G. Carr), New Bases of the 
Leucoline Series, Part II., 224 ; Part 
III., 256. 
Robinson (Dr), his Discovery of Viaduct 
at Jerusalem, 477. 
Rock Surfaces, Remarks on, by David 
Milne-Home, LL.D., 195. 
Rock Thermometers at the Royal Ob- 
servatory, Edinburgh, 710. 
Rock- Weathering in Edinburgh Church- 
yards, by Professor Geikie, 518 : I. 
Calcareous Stones (Marble, &c.), 519; 
(1) Superficial Solution, 521 ; (2) In- 
ternal Disintegration, 522; (3) Curva- 
ture and Fracture, 525. II. Sand- 
stones and Flagstones, 528. III. 
Granites, 531. 
Rocky Mountains, Geology of, by Pro- 
fessor Geikie, 426. 
Rotating Discs, 102. 
Rotating Water, 92. 
Rotatory Polarization, by Professor Tait, 
473. 
Roy (Dr), Elasticity of the Walls of the 
Arteries and Veins, 68. 
Saline Solutions ; their Specific Heat, 
by Thomas Gray, 689. 
Salmon, Fungus Disease affecting Sal- 
mon and other Fish, by A. B. Stir- 
ling, 232, 370. 
Sanctuary at Jerusalem, 481, 484, 486. 
Sandstones, their Weathering, 531. 
Sang (Edward), Occultation of Star, 103 
Tauri, 546. 
Description of New Astronomical 
Tables for the Computation of Anom- 
alies, 726. 
Saponites, 76, 77. 
Saprolegnia Ferax, by A. B. Stirling, 
232, 241, 243, 247, 373. 
Scott (Hugh) of Gala, Obituary Notice 
of, 11. 
Secchi (Angelo), Obituary Notice of, 11. 
Sellar (Professor), Remarks on Pro- 
fessor Geddes’s Theory of the “ Iliad,” 
105. 
Shark. — Branchial Appendages and 
Teeth of the Basking Shark ( Selache 
maxima), by Professor Turner, 457. 
Shearman (Dr Edward James), Obituary 
Notice of, 14. 
Signalling, Suggestions on the Art of, 
by Dr Alexander Macfarlane, 698. 
Simultaneous Equations, their Solution 
when the Symbols denote Qualities, 
by Dr Alex. Macfarlane, 283. 
Skull from Warrior Island, described by 
Professor Turner, 636. 
Smith (Dr John), Obituary Notice of, 
353. 
Smyth (Professor Piazzi, Astronomer- 
Royal for Scotland) on the Solar 
Spectrum in 1877-78 ; with some 
Idea of its Probable Temperature of 
Origination, 274. 
contributes Obituary Notice of 
Elmslie W. Dallas, Esq., 340. 
Note on the Present Outbreak 
of Solar Spots, 554. 
on the New Rock Thermometers 
at the Royal Observatory, Edinburgh, 
710. 
Spectra in Vacuum Tubes, 711. 
Solar Spectrum in 1877-78, with some 
Idea of its Probable Temperature of 
Origination, by Piazzi Smyth, Astro- 
nomer-Royal for Scotland, 274. 
Solar Spots, the present Outbreak of, 
by Professor Piazzi Smyth, 554. 
Somervail (Alexander), on Boulders and 
Drift on the Pentland Hills, 186, 193. 
Sound. — Its Transmission by Loose 
Electrical Contact, by James Blyth, 
M.A., 272. 
Sounding Machine, by J. Y. Buchanan, 
694. 
Space, different kinds of, 644 ; Homa- 
loidal or Euclidean Space, 644 ; 
Elliptic Space, 644, 653, 654, 657, 
660, 662 ; Hyperbolic Space, 644, 
645, 646, 649, 651, 652, 660 ; Space 
of four dimensions, 651. 
