874 
Index. 
Cucurbitaceaz Socotrenses, 513. 
Culeolus, New Genus of the Cynthi- 
adee, 82. 
Moseleyi , new species, 87. 
Murrayi, new species, 83. 
perlucidus , new species, 86. 
recumbens, new’ species, 85. 
Suhmi, new species, 86. 
Wyville - Tliomsoni , new species, 
84. 
Cumming (Rev. John), D.D., Obituary 
Notice of, by the Rev. Professor 
Flint, 328. 
Cynthia, a Genus of the Cynthiadse, 
57. 
arenosa, new species, 59. 
cerebriformis, new species, 57. 
coniplanata, new species, 62. 
irregularis , new species, 60. 
fissa, new species, 58. 
formosa , new species, 58. 
liispida, new species, 61. 
pallida, Heller, 60. 
Cynthinse, a Sub-family of the Cyn- 
thiadse, 53. 
Determinants. — Transformations con- 
necting General Determinants with 
Continuants, by Thomas Muir and 
Professor Chrystal, 135. 
Mr Thomas Muir on Professor 
Cayley’s Theorem regarding a 
Bordered Skew Determinant, 187 ; 
Law of Extensible Minors in Deter- 
minants, 187. 
Dickie (Dr. G. ), Diagnoses Algarum 
Novarum Socotrensium, 456. 
Dielectric Strength, by Professor 
Chrystal, 487. 
Dimethyl-thetine, 41. 
Birichletice Socotrenses , 834. 
Dittmar (Professor), Report on Gas 
Contents of Water of Faroe 
Channel, 718. 
Dixon (J. A.) elected a Fellow of the 
Society, 622. 
Dobbie (Dr. J. J.), M.A., and G. C. 
Henderson, B.Sc., on the Forma- 
tion of Serpentine from Dolomite, 
606. 
on a Red Resin from Bracxna 
Cinnabari, Socotra, 798. 
Dobbin (Dr. Leonard) elected a Fellow 
of the Society, 202. 
Donations of Books from Scientific 
and Literary Societies, and from 
Authors, 845. 
Dott (D. B.) elected a Fellow of the 
Society, 421. 
Comenic Acid 241. 
Meconic Acid, 33. 
Bracxna Cinnabari, Socotra, 798. 
Duns (Professor), The Surface Geology 
of Mid-Lochaber, 483. 
on Boulders at Mid-Lochaber, 
761. 
Durham (William), Note on Chemical 
Affinity and Atomicity, by William 
Durham, 231. 
Dust, Fogs, and Clouds, by John 
Aitken, 14 ; If there was no dust, 
there would be no fogs, no clouds, 
and probably no rain, 15 ; Dust- 
motes may be removed by heat, and 
yet the air may produce clouds, 16 ; 
Part II., 122. 
Dust-Particles form the Nucleus on 
which Yapour Condenses, 15. 
Dyspeptic Vertigo, A Case of, by 
Professor Crum Brown, 594. 
Earthquake of 28th November, 1880, 
in Scotland and Ireland, by Charles 
Alexander Stevenson, 176. 
Earth’s Rotation, Thermodynamic 
Acceleration of, by Sir William 
Thomson, 397. 
Echinoidea of the Faroe Channel, by 
Professor A. Agassiz, 697. 
Echinus splicer a (Forbes), The Muscles 
in, by Patrick Geddes, F.R.S.E., and 
F. E. Beddard, B.A., F.R.S.E., 88. 
Eclipse (Solar) of 31st December 1880, 
by Edward Sang, 18. 
of 17tli May 1882, with 
Remarks on the Calculation, by 
Edward Sang, 720. 
Eigg : Its Pitch stone-Porphyry River, 
by Professor Heddle, 632. 
Electricity (Atmospheric), by Prof. C. 
Michie Smith, 613. 
Electric Conductivity, Effects of Strain 
on, 135. 
Electric Discharge Through Colza Oil, 
by Dr. Alex. Macfarlane, 293. 
Electric Discharge, The Effect of 
Flame on, and the Effect of Mois- 
ture on, by Dr. A. Macfarlane and 
D. Rintoul, 567, 801. 
Electric Sonometer, by Prof. James 
Blyth, 28. 
Equidistant Multiples of Irrational 
Quantities, by E. Sang, 2. 
Eoscorpius, a Genus of Scorpion, 245. 
Eskdale, Carboniferous Rocks of, by 
Archibald Geikie, F.R.S. 600; Ad- 
ditional Fossil Fishes of, by Dr. R. 
H. Traquair, 603 ; Fossil Plants of, 
by R. Kidston, 603. 
Ethyl- chlorate of Triethyl-phosphorus- 
betaine, 42. 
Action of Oxide of Silver on, 43. 
