INDEX. 



883 



Thompson (Prof. S. P.) on electrolysis in 

 its physical and chemical bearings, 

 308 ; on the electric resistance of 

 magnetite, 314 ; on the cutting of 

 polarising prisms, 520. 



Thomson (Prof. J.) on the endurance of 

 metals under repeated and varying 

 stresses, and the proper working 

 stresses on railway bridges, &c., 284. 



•Thomson (J.), Eiver Niger and Central 

 Sudan sketches, 736. 



Thomson (Prof. J. J.) on standards for 

 use in electrical measurements, 145 ; 

 on electrolysis in its physical and 

 chemical bearings, 308. 



. and Mr. Newall on Ohm's law in 

 bad conductors, 308. 



Thomson (Prof. Sir W.) on preparing 

 instructions for the practical work 

 of tidal observation, 40 ; on the best 

 means of comparing and reducing 

 magnetic observations, 64 ; on the work 

 of the Differential Gravity Meter Com- 

 mittee, 141 ; on standards for use in 

 electrical measurements, 145 ; on re- 

 ducing and tabulating tidal observa- 

 tions in the English Channel, made with 

 the Dover tide-gauge, and connecting 

 them with observations made on the 

 French coast, 151 ; on the depth of the 

 permanently frozen soil in the Polar 

 regions, 271 ; on the combination of 

 the Ordnance and Admiralty surveys, 

 and the production of a bathy-hypso- 

 graphical map of the British Isles, 

 277 ; on electrolysis in its physical 

 and chemical bearings, 308; descrip- 

 tion of a differential gravity meter 

 founded on the flexure of a spring, 

 534 ; on stationary waves in flowing 

 water, 546 ; *artificial production and 

 maintenance of a standing bore, 547 ; 

 •velocity of advance of a natural bore, 

 ib. ; *graphical illustrations of deep 

 sea wave-groups, ib. 



Thomson (W.) on a new apparatus for 

 readily determining the calorimetric 

 value of fuel or organic compounds by 

 direct combustion in oxygen, 599. 



Thomson's, Sir W., correction of the 

 ordinary equilibrium theory of the 

 tides. Prof. J. C. Adams on, 541. 



, improved Wheatstone's rheostat, J. 



T. Bottomley on, 547. 



Thwaite (B. H.), fuel calorimetry, 536. 



♦Tibet, Preshevalski's travels in, E, D. 

 Morgan on, 734. 



Tidal observation, report of the Com- 

 mittee for preparing instructions for 

 the practical woik of, 40. 



Tidal observations, forrth report of the 

 Committee for the harmonic analysis 

 of, 40. 



Tidal observations in Canada, second 



report of the Committee for promoting, 

 150. 



Tidal observations in the English Channel, 

 made with the Dover tide-gauge, report 

 of the Committee for reducing and 

 tabulating, and for connecting them 

 with observations made on the French 

 coast, 151. 



Tiddeman (R. H.) on the erratic blocks 

 of England, Wales, and Ireland, 223. 



Tides, Sir W. Thomson's correction of 

 the ordinary equilibrium theory of the, 

 Prof. J. C. Adams on, 541. 



*Tides of long period, the dynamical 

 theory of the, Prof. G. H. Darvrin on, 

 541. 



•*Tidy (Dr. C. M.) on the action of drink- 

 ing-water on lead, 583. 



Tilden (Prof. W. A.) on vapour pressures 

 and refractive indices of salt solutions, 

 204 ; on the investigation of certain 

 physical constants of solution, especi- 

 ally the expansion of saline solutions, 

 207 ; on isomeric naphthalene deriva- 

 tives, 216 ; on electrolysis in its physi- 

 cal and chemical bearings, 308 ; on the 

 phenomena and theories of solution, 

 444. 



Till (W.), on the Birmingham, Tame, and 

 Eea district drainage, 499. 



Tipton district, the drainage of the, by 

 E. Terry, 824. 



Tolidin, derivatives of, and the azotolidin 

 dyes. Dr. R. F. Ruttan on, 591. 



Tomlinson (H.) on standards for use in 

 electrical measiirements, 145. 



Topley (W.), on the circulation of under- 

 ground waters, 235 ; note on the recent 

 earthquake in the United States, in- 

 cluding a telegraphic dispatch from 

 Major Powell, Director of the U.S. 

 Geological Survey, 656 ; on the erosion 

 of the sea-coasts of England and 

 Wales, 847. 



•Tortoise, some new points in the phy- 

 siology of the, Prof. Haycraft on, 696. 



Trade route, a new, between America 

 and Europe, by H. Sutherland, 727. 



•Trade vrinds, the, and the Gulf Stream, 

 the connection of, with some West 

 Indian problems, by R. G. Haliburton, 

 731. 



•Transpiration, an apparatus for deter- 

 mining the rate of, Prof. W. Hillhouse 

 on, 701. 



Trimen (Dr. H.) * on the flora of Ceylon, 

 688 ; note on Helopeltis antonii. Sign., 

 in Ceylon, 711. 



Trouton (Mr.) and Prof. G. F. Fitzgerald 

 on the accuracy of Ohm's law in elec- 

 trolytes, 312. 



Tuckwell (Rev. W.) on the glacial 

 erratics of Leicestershire and War- 

 wickshire, 627. 



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