INDEX. 
Absorption of Sea-Water, by John 
Aitken, 637. 
Adamantine Carbon or Diamond : Its 
Preparation, by Dr. R. S. Marsden,20. 
Addresses : — 
Introductory Address (Session 
1880-81), by the Right Hon. 
Lord Moncreiff, 136. 
Address on the Island of Socotra, 
by Professor I. Bayley Balfour, 
245. 
Address on Closing the Session 
1880- 81, by Sir Alexander 
Grant, Bart., 293. 
Address by David Milne Home, 
on presenting the Makdougall- 
Brisbane Prize to Professor 
Piazzi Smyth, Astronomer- 
Royal for Scotland, 362. 
Address on the Historic Evidence 
for the Destruction of Pompeii 
and Herculaneum, by Dr. Caze- 
nove, 421. 
Address by Professor Tait, on pre- 
senting the Keifh Prize to Pro- 
fessor Chrystal, 797. 
Address by Mr. Buchan, on pre- 
senting the Neill Prize to Mr. 
John Murray, 797. 
Address on Closing the Session 
1881- 82, by Professor J. H. 
Balfour, 843. 
Agassiz (Professor A.), Report on the 
Echinoidea of the Faroe Channel, 
697. 
Aitchison (Dr. J. E. Tierney) elected 
a Fellow of the Society, 233. 
Aitken (Dr. A. P.), and Hamilton 
(Prof. D. J.), Report on Louping-ill 
and Braxy, 615. 
Aitken (John) on Dust, Fogs, and 
Clouds, 14, 122. 
Aitken (J. ) on the Colour of the Medi- 
terranean and other Waters, 472. 
on the Absorption of Sea- 
Water, 637. 
Algebra of Relationship, by Dr. Alex- 
ander Macfarlane. Part II., 5; 
Part III., 162. 
Ammonium Salts, their Condition 
when dissolved in Water, by W. W. 
J. Nicol, 819. 
Amoeboid Movements, by John B. 
Hay craft, 29. 
Ampelideoe, Socotrenses, 506. 
Ampelisca convpacta, New Species of 
Crustacean, 688. 
Anacardiacece Socotrenses , 507. 
Anglin (A. H.), M.A., M.R.I.A. 
elected a Fellow of the Society, 133. 
on the Expansion of Rational 
Fractions, 162. 
Annelida of the Faroe Channel, by Dr. 
M'Intosh, F.R.S., 693. 
Anurella, a Sub-Family or Section of 
the Molgulidce anurce, 233 ; Anu- 
rella and Molgula, in classifying 
the “Challenger” species, considered 
as one genus, 234. 
Arrangement. — Additional Note on a 
Problem of Arrangement, by Thomas 
Muir, A.M., 187. 
Article, the Definite, in Greek, by 
Professor Blackie, 622. 
Articulation, by the Rev. J. L. Blake, 
815. 
Ascopera, a New Genus of the Mol- 
gulkhe, 234. 
gigantea, new species, 238. 
pedunculata, new species, 239. 
Asteroidea of the Faroe Channel, by 
W. P. Sladen, F.L.S., 698. 
Atmospheric Electricity, by Professor 
C. Michie Smith, 613. 
