INDEX. 



717 



6t.'4 ; on the salting mounds of Essex, 

 6?.l. 



Striated stone from the trias of Portis- 

 head, Prof. W. J. Sollas on a, 586. 



Suffolk, East, the range of the lower ter- 

 tiaries of, W. H. Dalton on, 575. 



Sugar, cane and invert, the specific rota- 

 tory power of, A. H. Allen on, 541. 



Sulphate of alumina free from iron, a 

 new process for the production of, 

 from aluminous minerals containing 

 iron, J. W. Kynaston on, 545. 



Sun-spot period, the length of the. Dr. 

 H. Muirhead on, 465. 



Surgery and superstition in neolithic 

 times. Miss A. W. Buckland on, 630. 



Swansea usages and customs, remarks 

 and statistics relating to, as they affect 

 the sellers of foreign or colonial copper 

 ores, by \V. Henderson, 681. 



Sylvester (Prof.) on the calculation of 

 tables of the fimdamental invariants 

 of algebraic forms, 38. 



Symons (G. J.) on underground tempera- 

 " ture, 26. 



Tait (Prof.) on the measurement of the 

 lunar disturbance of gra^aty, 25 ; on 

 secular experiments on the elasticity 

 of wires, 61 . 



Tait (P. M.), vital and other statistics 

 applicable to musicians, 666. 



♦Tanner (Lieut. -Col. H. C. B.) on the 

 Dara Nur, Northern Afghanistan and 

 its inhabitants, 665. 



Tawney (E. B.) on the ♦ Geological 

 Kecord,' 87. 



Temperature, iinderground, thirteenth 

 report on the rate of increase of, down- 

 wards in various localities of dry land 

 and under water, 26. 



Temple (Lieut. G. T.) on the mountain 

 Lapps, 631 ; on the North-East Pas- 

 sage, 663. 



♦Temple (Sir E.), the high road from 

 the Indus to Candahar, 658. 



Tertiaries, the lower, of East Suffolk, the 

 range of, W. H. Dalton on, 575. 



Tertiary (Miocene) flora, &c., of the ba- 

 salt of the North of Ireland, second 

 report on the, 107. 



Thallophytes, a reformed system of ter- 

 minology of the reproductive organs of, 

 by A. W. Bennett and G. Murray, 600. 



*Thomas (J. W.) on the coal seams of 

 the eastern portion of the South Wales 

 basin, and their chemical composition, 

 534. 



Thompson (Prof. S. P.) on electric con- 

 vection-currents, 470. 



Thomson (Prof. Sir C. Wyville) on the 

 occupation of a table at the zoological 

 station at Naples, 161 ; on the cruise 

 of the ' Knight Errant,' 603. 



♦Thomson, Mr. J., latest news of the 

 Eoyal Geographical Society's East- 

 African expedition under, 656. 



Thomson (Prof. Sir Wm.) on the mea- 

 surement of the lunar disturbance of 

 gravity, 25 ; on underground tempera- 

 ture, 26 ; on mathematical tables, 30 ;. 

 on secular experiments on the elasti- 

 city of wires, 61 ; on patent legislation > 

 318 ; on the phenomena of the sta- 

 tionary tides in the English Cliannel 

 and the North Sea, and the value of 

 tidal observations in the North Atlan- 

 tic Ocean, 390 ; on maximum and mini- 

 mum energy in vortex motion, 473 ; 

 on a septum permeable to water and 

 impermeable to air, with practical 

 applications to a navigational depth- 

 gauge, 488 ; on an experimental illus- 

 tration of minimum energy in vortex 

 motion, 491 ; on a disturbing infinity 

 in Lord Eayleigh's solution for waves. 

 in a plane vortex stratum, 492 ; on a 

 method of measuring contact electri-- 

 city, 494 ; on a method of determin- 

 ing without mechanism the limiting 

 steam-liquid temperature of a fiuici,. 

 496 ; on an improved sounding machine,. 

 703. 



Thomson (W.) on the determination of 

 the loss of heat in steam-boilers aris- 

 ing from incrustation, 549; on the 

 identification of the ink used in writ- 

 ing letters and docimients as evidence 

 in cases of libel, forgery, &c., 549. 



♦Thomson (W.) on the incrustation of 

 steam boilers, 703. 



Tidal observations at Madeira or other 

 islands in the North Atlantic Ocean„ 

 on the value of, 390. 



Tiddeman (E. H.) on the erratic blocks 

 of England, Wales, and Ireland, 110. 



Tides, the stationary, in the English 

 Channel and the North Sea, the pheno- 

 mena of, third report on, 390. 



Topley (W.) on the ' Geological Eecord," 

 87. 



Torghatten, the island of, Prof. W. J. 

 Sollas on, 576. 



Town water-supplies, the temperature of,. 

 B. Latham on, 696. 



Trade, the recent revival in, S. Boiu-ne 

 on, 436. 



Trigonometrical from elliptic function 

 formula3, the deduction of, J. W. L. 

 Glaisheron, 477. 



identity involving products of four 



sines, note on a, by J. W. L. Glaisher^ 

 484. 



Tristram (Eev. Canon) on the possibilitj- 

 of establishing a close time for indi- 

 genous animals, 257. 



Troad, a recent examination of the topo- 

 graphy of the. Dr. Phene on, 664. 



