Index, 
667 
Smith (John Alexander, M.D.), De- 
scription of Calamosichthys, a new 
Genus of Ganoid Fish from Old 
Calabar, 654. 
Smyth (Professor C. Piazzi) on the 
Great Kefractor at Elchies, and its 
Powers in Sidereal Observation, 47. 
Concluding Note on the Star 
Observations at Elchies, 160. 
Note on Lead from Nelson’s 
Monument, injured by Lightning, 
105. 
on some Points in the Metro- 
logy of the Great Pyramid, 198. 
Account of Eecent Measures 
at the Great Pyramid, 640. 
Spar, Calcareous, Influence of the 
Kefracting Force of, on Polarisa- 
tion, 175. 
Speciflc Gravity of Liquid and Solid 
Substances, Chemical and Physical 
Principles of, 226. 
Spectra, Paragenic, Superposition of, 
434. 
Stalagmite, Notice of large Cal- 
careous, 423. 
Star Observations at Elchies, Con- 
cluding Note on, 100. 
Sterility of Women, Laws of the, 574. 
Stewart (Balfour, M.A., F.R.S.) on 
Earth Currents during Magnetic 
Calms, and their connection with 
Magnetic Changes, 112. 
■ on Sun Spots, and their con- 
nection with Planetary Configura- 
tions, 213. 
Note on a Paper by, 517. 
Stewart (Professor Dugald), Un- 
published Letter of, 215. 
Sulphur, Atomicity of, 513. 
Sun Spots, and their connection with 
Planetary Configurations, 213. 
Superposition, 190. 
Survey, Geological, in Scotland, 
Account of the Progress of, 355. 
Tait (Magnus M., F.C.S.) on the 
Action of Terchloride of Phos- 
phorus on Aniline, 177. 
Tait (Professor) , N ote on a Quaternion 
Transformation, 115. 
on the Conservation of 
Energy, 121. 
on Fermat’s Theorem, 181. 
Note on the Law of Frequency 
of Error, 335. 
Note on Action, 404. 
on the Application of Hamil- 
ton’s Characteristic Function to 
Special Cases of Constraint, 407- 
Tait (Professor), Behaviour of Iron 
Filings, strewn on a Vibrating 
Plate, and exposed to the action 
of a magnetic pole, 444. 
• Orthogonal Isothermal Sur- 
faces, 528. 
Note on the Compression of Air 
in an Air-bubble under Water, 563. 
• on some Geometrical Con- 
structions connected with the El- 
liptic Motion of Unresisted Pro- 
jectiles, 565. 
on some Capillary Pheno- 
mena, 593. 
Talbot (H. F., LL.D.) on Fagnani’s 
Theorem, 126. 
on the Theory of Parallel 
Lines, 126. 
on Confocal Conics, 432. 
Telescope, Curious Binocular, 181. 
Temperature of the Earth’s Surface 
produced by Underground Heat, 
200 . 
Thomson (Professor W., F.R.S.) on 
some Kinematical and Dynamical 
Theorems, 113. 
on Centrobaric Bodies, 190. 
■ on the Elevation of the 
Earth’s Surface Temperature pro- 
duced by Underground Heat, 200. 
on the Protection of Vegeta- 
tion from destructive Cold every 
night, 203. 
■ Address on the Forces con- 
cerned in the Laying and Lifting 
of Deep-Sea Cables, 495. 
— on the Dynamical Theory of 
Heat. Part 7, 510. 
The Doctrine of Uniformity 
in Geology briefly Refuted, 512. 
Todhunter (L, M.A.), Note on a Paper 
by Balfour Stewart in the Trans- 
actions of the Royal Society of 
Edinburgh, 517. 
Topaz, Specimens of, with Pressure 
Cavities, 95. 
Transvervals, 408. 
Traquair (Ramsay H., M.D.), Descrip- 
tion of Pygopterus Greenockii 
(Agassiz), 597. 
• on the Internal Structure of 
Calamosichthys Calaharicus, 657. 
Tunicata, on the Representative Rela- 
tionships of the Fixed and Free, 
by John Denis Macdonald, R.N., 
F.R.S., 46. 
Turner (William, M.B.) on Human 
Crania allied in Anatomical Char- 
acters to the Engis and Neander- 
thal Skulls, 161, 
