INDEX. 



923 



means o£ comparing and reducing 

 magnetic observations, 49 ; on electro- 

 lysis in its physical and chemical 

 bearings, 223 ; on Boscovich's theory, 

 494. 



Thomson's, SirWm., portable electrometer, 

 on atmospheric electricity and the use 

 of, in the tropics, by Trof. C. M. 

 Smith, 507. 



Thorpe (Prof. T. E.) and Prof. A. W. 

 Riicker on the relations between the 

 geological constitution and the mag- 

 netic state of the British Isles, 580. 



*Thys (Capt.), the Congo railway, 659. 



Tiaret in Algeria, some remarkable monu- 

 ments in the neighbourhood of. Col. 

 Sir L. Playfair on, G68. 



Tidal estuaries of the south-east of Eng- 

 land, the temperature of the, Dr. H. C. 

 Sorby on, 509. 



•Tidal observation, the harmonic analysis 

 of, fifth report of the Committee for, 

 488. 



* , the practical work of, report of 



the Committee for preparing instruc- 

 tions for, 48S. 



Tidal observations in Canada, fifth re- 

 port of the Committee for promoting, 

 27. 



Tiddeman (R. H.) on the erratic blocks 

 of England, Wales, and Ireland, 115 ; 

 on concurrent faulting and deposit in 

 carboniferous times in Craven, York- 

 shire, with a note on carboniferous 

 reefs, 600. 



Tilden (Prof.) on the best method of es- 

 tablishing international standards for 

 the analysis of iron and steel, 50 ; on 

 the properties of solutions, 53 ; on the 

 bibliography of solution, ib. ; on iso- 

 meric naphthalene derivatives, 172 ; on 

 electrolysis in its physical and chemi- 

 cal bearings, 223 ; on the influence of 

 silicon on the properties of steel, 207. 



•Tinamou, the caeca of a, F. E. Beddard 

 on, 616. 



Tomlinson (TI.) on standards for use in 

 electrical measurements, 41. 



Tondini do Quarenghi (M.), the pro- 

 posals of, relative to the unification of 

 time, and the adoption of a universal 

 prime meridian, report on, 49. 



Tones of hells, Lord Rayleigh on the, 491. 



Topley (W.) on the circulation of under- 

 ground waters, 71 ; on the work of 

 the Corresponding Societies Com- 

 mittee, 187 ; on the investigation of 

 the action of waves and currents on 

 the beds and foreshores of estuaries 

 by means of working models, 327 ; 

 the work of the Geological Survey in 

 Northumberland and Durham, 597. 



Topography of the brain, the, in relation 

 to the external surface of the head, a 



new method of illustrating, by Prof. 

 Eraser, 794. 



Torres Straits, notes on the geology of, 

 by Prof. A. C. Haddon, 587. 



Torres Straits islanders, some former 

 customs and beliefs of the. Prof. A. C. 

 Haddon on, 786. 



Tower (B.), an apparatus for providing a 

 steady platform for guns, search lights, 

 telescopes, &c., 735. 



Transformers, the design of, by J. Swin- 

 burne, 741. 



Transmission of power by compressed 

 air, experiments upon the, in Paris 

 (Popp's system), by Prof. A. B. W. 

 Kennedy, 448. 



Transporting power of water, the appli- 

 cation of the, to the deepening and 

 improvement of rivers, by W. H. 

 Wheeler, 754. 



Traquair (Dr. R. H.) on the fossil fishes 

 of the Devonian rocks of Scaumenac 

 Bay and Campbellton, Canada, 584 ; 

 *on the restoration of Asterolejris maxi- 

 vius (Agassiz), with remarks on the 

 zoological affinities of the pterich- 

 thyida;, 638. 



Trimen (Dr.) on the steps taken for 

 establishing a botanical station at 

 Peradeniya, Ceylon, 114. 



Tristram (Rev. Canon H. B.) on the pecu- 

 liarities of the avifauna of the Canary 

 Islands, 616. 



Trotter (A. P.), a curve ranger, 751. 



Trouton (F. T.) on the molecular pheno- 

 mena connected with the magnetisa- 

 tion of iron, 33 ; *some experiments on 

 radiation with Prof. Hertz' mirrors, 

 510 ; on the temporary thermo-current 

 in iron, 517. 



*Tuchungia, a new genus from Central 

 Africa, Dr. F. W. Oliver on, 649. 



Turner (T.) on the best method of estab- 

 lishing international standards for the 

 analysis of iron and steel, 50 ; on the 

 influence of silicon on the properties 

 of steel, 267. 



Turner (Prof. Sir W.) on the placenta- 

 tion of the dugong, 629 ; Address to 

 the Anthropological Section by, 756; 

 on implcmentsof stag's horn associated 

 with whales' skeletons found in the 

 Carse of Stiriing, 789. 



Tyldcn-Wright (Mr.) on the circulation 

 of underground waters, 71. 



Tylor (Dr. E. B.) on editing a new edi- 

 tion of ' Anthropological Notes and 

 Queries,' 186 ; on the North-western 

 tribes of the dominion of Canada. 

 797. 



Underground temperature, the rate of 

 increase of, downwards in various 



