Index. 
Ill 
Obituary Notices — continued. 
Gibson-Craig (Sir William), 24. 
Griffith (Sir Richard), 17. 
Harkness (Robert), 31. 
Kelland (Professor Philip), Presi- 
dent of the Society, Eloge of, 
208 ; Obituary Notice of, 321. 
Lamont (Johann von), 358. 
M‘Bain (Dr James), 350. 
Maxwell (Sir William Stirling), 20. 
Nicol (Professor James), 352. 
Regnault (Henri Victor), 5. 
Roberts (Martyn John), 26. 
Scott (Hugh) of Gala, 13. 
Secclii (Angelo), 11. 
Shearman (Dr Edward Janies), 14. 
Smith (Dr John), 353. 
Trevelyan (Sir Walter Calverley), 
Bart., 354. 
Tweeddale (Arthur, Marquis of), 
24. 
Watson (Dr James), 14. 
Occultation of Star 103 Tauri, by 
Edward Sang, 546. 
Ocular Spectrum, a New Variety of, by 
John Aitken, 40. 
Office-bearers for Session 1878-79, 1 ; 
for Session 1879-80, 315. 
Olbers (Wilhelm), his Hypothesis of a 
Repulsive Force acting on Con- 
stituents of Comets’ Tails, 369. 
Ordinary Fellows, 1878-79, 4. 
Oscillations (Gravitational) of Rotating 
Water, by Sir William Thomson, 92. 
Osteoblasts : their Functions, their 
Origin, 707 ; by Dr De Burgh Birch, 
666 . 
Pachychlaena, new sub-genus of Asci- 
diadae (“Challenger” Expedition), 
459 ; Pachychlcena oblong a, 461 ; 
Pachychlc/ena obesa , 462 ; Pachy- 
chlcena gigantea , 463. 
Palceocaris Scoticus, 711. 
Palestine, Trigonometrical Survey of, 
by Lieut. Claude Reignier Conder, 
R.E., 379. 
Pangeometry, by Professor Chrystal, 
640. 
Parallels, Theory of, 652, 657, 663. 
Peach (B. N.) on some New Crustacea 
from the Cementstone Group of the 
Calciferous Sandstone of Eskdale and 
Liddesdale, 711. 
Penguin. See Auk (Great). 
Pennina, 76. 
Pentland Hills, Boulders and Drift there, 
by Alexander Somervail, 186 ; Drift 
and Glacial Phenomena there, by 
Alex. Henderson, 187 ; Notes on 
Striae and Boulders on the Pentlands, 
by the late Charles Maclaren, 189; 
by Professor Geikie, 191; by Mr 
Croll, 192. Boulders at Hare Hill, 
North Black Hill, South Burn, Har- 
bour Hill, Logan House, West Black 
Hill, 190-192; Eight Mile Burn, 191; 
Scald Law and Allermuir, 192. 
Perophora listeri , 718, 720, 721. 
Phallusia, 458. 
Phaeodaria of Haeckel, 508. 
Physiological Results of Temperature 
Variation, by J. B. Haycraft, 68. 
Pituri Poison, by Professor Thomas R. 
Fraser, 200. 
Planet, an Ultra-Neptunian, by Pro- 
fessor George Forbes, 636. 
Platisomidae, their Structure and Affini- 
ties, by Dr R. H. Traquair, 202. 
Playfair (P. M.) and Macfarlane (Dr 
Alex.) on the Disruptive Discharge 
of Electricity, 50. 
on the Discharge of Electricity 
through Olive Oil, 727. 
Poison. — The Pituri Poison of South 
Australia, by Prof. Thomas R. Fraser, 
200 . 
Polarization. — On Rotatory Polarization, 
by Professor Tait, 431, 473. 
Potassium Sulphide, its Action on Chloro- 
form, by W. W. J. Nicol, 425. 
Powder. — On the Diffusion of an Im- 
palpable Powder into a Solid Body, 
by Dr R. Sydney Marsden, 712. 
Pressures. — On the Accurate Measure- 
ment of High Pressures, by Professor 
Tait, 572. 
Prizes. — Keith Prize for Biennial Period 
1875-77, presented to Professor 
Heddle, 62. 
The Makdougall-Brisbane Prize 
for the Period 1876-78, presented to 
Professor Geikie, 272. 
Keith Prize for the Period 1877— 
79, awarded to Professor Fleeming 
Jenkin, 545, 637. 
Probability. — Application of the Algebra 
of Logic to certain Problems in the 
Theory of Probability, 105. 
Probabilities of Marriages being Fruitful, 
by T. B. Sprague, 202. 
Pulvinulinse of “Challenger” Expedi- 
tion, 508. 
Puzzle. — Theory of the Fifteen Puzzle, 
by Professor Tait, 664. 
Quartz (Auriferous), 67. 
Quaternions. — Quaternion Investigations 
connected with Minding’ s Theorem, 
by Professor Tait, 200. 
