Index. 
883 
Tait (Professor P. G.), Note on the 
Temperature Changes due to Com- 
pression, 51, 217. 
on some Effects of Rotation in 
Liquid Jets, 94. 
Note on the Influence of Tem- 
perature-Change of Conductivity on 
the Conduction of Heat in Solids, 94. 
Note on Thermal Conductivity, 
and on the Effects of Temperature- 
Changes of Specific Heat and Con- 
ductivity on the Propagation of 
Plane Heat Waves, 126. 
Simple Method of Showing 
the Diminution of Surface Tension 
in Water by Heat, 131. 
Note on a Singular Problem in 
Kinetics, 173. 
on some Space-Loci, 197. 
on the Pressure-Errors of the 
“ Challenger ” Thermometers, 199. 
on the Crushing of Glass by 
Pressure, 204. 
Note on a Proposition in the 
Theory of Numbers, 245. 
on the Compression of Gases 
by High Pressures, 293. 
on Quaternion Integration, 293. 
on Mirage (Abstract), 354 ; 
Part II., 743 ; Part III., 798. 
Optical Notes (1) on a Singular 
Phenomenon produced by some Old 
Window-Panes, 418 ; (2) On the 
Nature of the Vibrations in Common 
Light, 419. 
His Address on Presenting the 
Keith Prize to Professor Chrystal, 
797. 
Kinetic Theory of Gases in re- 
lation to Dissociation, 806. 
Note on the Lowering of the 
Maximum Density Point of Water 
by Pressure, 813. 
Tennent (Robert) on the Motion of a 
Storm in an Easterly Direction 
being only possible as a Circular 
Atmospheric Wave, 209. 
Tetra-Benzyl-Phosphonium, 46 ; Chlo- 
ride of, 47 ; Acid Sulphate of, 48 ; 
Hydrate of, 49. 
Textularia aspcra, 715. 
Trametes Socotrana , a New Fungus, 
456. 
Theel (Dr. Hjalmar), Report on the 
Holothurioidea of the Faroe Channel, 
694. 
Thermal Conductivity, by Professor 
Tait, 126. 
Thermo-Dynamic Acceleration of the 
Earth’s Rotation, by Sir William 
Thomson, 396. 
Thermometers. — Pressure - Errors of 
the “Challenger” Thermometers, 
by Professor Tait, 199. 
Thioformanilid, The Action of Heat 
on, by W. W. J. Nicol, 199. 
Thomson (Dr. Allen) contributes an 
Obituary Notice of Dr. William 
Sharpey, 110. 
(William), M. A., B.Sc., elected 
a Fellow of the Society, 598. 
(Sir William), Hon. Vice- 
President, Effect of Moistening with 
Water the opposed Metallic Surfaces 
in a Volta-Condenser, and of substi- 
tuting a Water Arc for a Metallic Arc 
in the Determining Contact, 135. 
on Vortex Sponge, 135. 
on the Average Pressure due to 
Impulse of Vortex-Rings on a Solid, 
204. 
on the Thermo-Dvnamic Ac- 
celeration of the Earth’s Rotation, 
396. 
on the Figures of Equilibrium 
of a Rotating Mass of Fluid, 610. 
Tiliacece Socotrenses, 504. 
Tizard (Staff-Commander) and John 
Murray, Exploration of the Faroe 
Channel, during the Summer of 
1880, in the “ Knight Errant,” 638. 
Todd (D. P. ), Letter as to his Search 
for a Trans-Neptunian Planet, 91. 
Traill (William), Report as to Boulders 
in North Ronaldshay, 746. 
Traquair (Dr. R. H.), Additional Re- 
searches on the Structure of the 
Paheoniscidse and Platysomidse, 217. 
Additional Fossil Fishes of 
Eskdale and Liddesdale, 603. 
Triethyl-phosphine, 41. 
phosphorus - betaine, Ethyl- 
chlorate of, 42 ; Ethyl-bromate and 
Ethyl-iodate of, 43 ; Action of Heat 
on Compounds of, 43; Hydroclilorate 
of, 43 ; Sulphate of, 45. 
methyl-phosphonium, 45. 
Tubipora musica : The Structure of its 
Skeleton, and the Relation of the 
genus Tubipora to Syringopora, by 
Dr. H. Alleyne Nicholson, 219. 
Tunicata of the “ Challenger ” Expedi- 
tion, by Dr. W. A. Herdman. 
Part III. Cynthiadse, 52; Part IV. 
Molgulidse, 233. 
Turgite, 549. 
Turner (Professor) on a Specimen of 
Sowerby’sWhale ( Mesoplodon bidens), 
captured in Shetland, 443. 
on a Specimen of Balcenoptera 
borealis or laticeps, captured in the 
Firth of Forth, 515. 
