Index. 
879 
Mirage, by Professor Tait, 354 ; Part 
II., 743 ; Part III., 798. 
Moisture, its effect on the Electric 
Discharge, 801. 
Molgulidse, a family of the Tunicata, 
divided into four genera — Anurella, 
Molgula, Ctenicella, and Eugyra, 
233. 
Molgula, a Genus of the Tunicata. 
gigctntea, 234. 
gregaria, 234. 
pedunculata , new species, 234. 
horrida, new species, 235. 
Forlesi , new species, 236. 
pyriforrms, new species, 236. 
Mollusca of the Faroe Channel, by 
Dr. Gwyn Jeffreys, F.R.S., 680. 
Moncreiff (The Eight Hon. Lord), 
President, His Introductory Ad- 
dress, 2, 136. 
Receives the Thanks of the 
Society for his Address, 2. 
Contributes an Obituary Notice 
of Lord Ormidale, 107. 
Morgan’s System of Consanguinity 
and Affinity, 245. 
Morrison (William), Report as to 
Boulders in Ross-shire, 754. 
Moscow. — The Imperial Society of 
Naturalists of Moscow, invite the 
Royal Society to the Celebration of 
the Fiftieth Anniversary of the Gra- 
duation of Dr. Charles Renard, 567. 
Muir (M. M. Pattison), M. A., on an 
Oxycyanide, and a New Oxide, of ( 
Bismuth, 557. 
Muir (Thomas), M.A., on Professor 
Cayley’s Theorem regarding a 
Bordered Skew Determinant, 187 ; 
the Law of Extensible Minors in 
Determinants, 187; Additional Note 
on a Problem of Arrangement, 187. 
On a Class of Permanent j 
Symmetric Functions, 409. 
and Professor Chrystal on some 
Transformations connecting General 
Determinants with Continuants, 135. 
Muller (Dr. J.), Diagnoses Lichenum 
Socotrensium Novorum, 457. 
Murray (John) and Staff-Commander 
Tizard, Exploration of the Faroe 
Channel during the Summer of 
1880 in the “ Knight-Errant,” 638. 
Rocks of North Rona, Faroe, 
720. 
awarded the Neill Prize for 
1877-80, 743 ; Prize presented, 797. 
his Statement with respect to 
Applications for the Government 
Grant of -£4000, 806. 
Muscles of the Mammalian Foot, 162. 
Neill Prize (1877-80) presented to Mr. 
John Murray for his Paper on the 
Structure and Origin of Coral Reefs 
and Islands, 797. 
Neplnropsis Atlantica , New Species of 
Crustacean, 684. 
Newcomb (Professor Simon) elected a 
Foreign Honorary Fellow, 94. 
Contributes an Obituary No- 
tice of Professor Benjamin Peirce, 
739. 
Nicholson (Prof. H. Alleyne) on the 
Structure of the Skeleton of Tubi- 
pora musica , and on the Relation of 
the Genus Tubipora to Syringopora, 
219. 
Nicol (W. W. J.), the Action of Heat 
on Thioformanilid, 199. 
Condition of Ammonium Salts 
when dissolved in Water, 819. 
Norman (Rev. A. M.), Report on the 
Crustacea of the Faroe Channel, 683. 
Numbers, Theory of, by Professor 
Tait, 245. 
Obituary Notices of — 
Burton (Dr. John Hill), 324. 
Cumming (Dr. John), 328. 
Handyside (Dr. P. I).), 329. 
Key (Thomas), 95. 
Knox (Thomas), 103. 
Lassell (Dr. William), 97. 
Lindsay (Dr. William Lauder), 736. 
Lothian (Maurice), 99. 
Ormidale (The Honourable Lord), 
107. 
Peirce (Professor Benjamin), 739. 
Ponton (Mungo), 100. 
Sanders (Professor), 333. 
Sharpey (Professor William), 110. 
Smith (David), Treasurer, 734. 
Wood (Dr. Andrew), 338. 
Object-Glass. — Easy Method for De- 
termining the Position of its 
Principal Focus, 50. 
Office-Bearers for Session 1880-81, 1 ; 
for Session 1881-82, 324. 
Omond (R. T.) on the Lowering of 
the Maximum Density Point of 
Water by Pressure, 626, 809. 
Omplialciriece Socotrenses, 457. 
Ophiuroidea of the Faroe Channel, by 
Professor Theodore Lyman, 707. 
Ormidale (Lord), Obituary Notice of, 
107. 
Oxidation of Ferrous Salts, by J.. Y. 
Buchanan, 191. 
Oxide (A New) of Bismuth, by M. M. 
Pattison Muir, M.A., 557. 
Oxycyanide of Bismuth, by M. M. 
Pattison Muir, M.A., 557, 562. 
