654 



INDEX. 



Theury and Minnich, Messrs., 101. 



Prof., 15S. 

 Thiellay,Mr.,445. 

 Thilorier, Mr., 475. 

 Thilorier's apparatus, 507. 

 Thomas, Prof. Cyrus, ccxxiv., 572. 

 Thompson, Prof. A. H., 286, 292, 300. 



Prof. Wyville, cxlix., cl., 

 clxxviii., 243. 

 Thomsen, Mr., liv. 

 Thomson, Captain Frank T., cxvi. 



Sir William, xxxiii., 97, 103,197. 

 Thorell, Dr., clxxxix. 

 Thrust of embankments, 495. 

 Thudichum, Mr., xciv. 

 Thunderstorms, distribution of, 82. 

 on Pike's Peak, 80. 

 Thuret, Mr. G., ccxi., 596. 

 Thurston, Mr. E. H., 4S9, 492. 

 Thury, Prof., 182. 

 Tidal retardation of the earth's rotation, 



20. 

 Tidderman, Mr. E. H., clvi. 

 Tides, xxxiii. 



in the Great Lakes, 69. 



in the roadstead of Fiume, 107. 



of the Aleutians and the North Pa- 

 cific, 70. 



of the Mediterranean, 113. 



wind's influence on, 73. 

 Tiemann and Haarmann, Messrs., 217. 

 Tilden, Mr., lxxxiii. 

 Tillmann, Prof. Samuel D., 455, 590. 

 Tillodontia, 305. 



new order of mammals, 337. 

 Timber, carbonic acid for drying, 407. 



preservation, cclxxvi.,cclxxxviii., 

 465, 466. 

 Timbs, John, 596. 



Time arrangement at Pittsburgh, 60. 

 Tin, filtration of, 206. 



in New South Wales, 242. 

 lining, to detect lead in, 210. 

 Tinning in the humid way, 535. 

 Tissandier, Mr. Gaston, 472, 578. 

 Titman, Mr., 55. 

 Tizard, Commander, cxvii. 

 Tobacco smoke, carbonic oxide in, 216. 

 Tobacco-smoking, 564. 

 Todd, Mr., xxvii. 

 Tolles, Mr., cxxxviii. 

 Tomlinson, Prof., 117. 

 Tommasi, Mr. Douati, lxxi., 167. 

 Topinard, Dr. Paul, civ., clxt i., clxxi., 

 Topler, Mr., xliii. 

 Topography of Michigan, 257. 

 Tornadoes and waterspouts, 77. 

 Tortoises, resemblance of extinct to living 



ones, 342. 

 Totten, Lieut. George F., cxv. 

 Toussaint, Mr., clxxii. 

 Touzet, Mr., 470. 

 Tower, Mr., 505. 

 Town-builders, traces of, 279. 

 Tozzetti, Prof., 339. 

 Traill, Mr., ccvii. 



Train, Lieut. -Commander Charles J., 56. 

 Transit of Venus, 52. 

 Transparent soap, 441. 

 Traube, Dr. Moritz, ccxiv. 

 Treat, Mrs, Mary, 374. 

 Trematodes, parasitic, clxxxv. 

 Tremeschini, Mi'., 154. 

 Trent, Mr. J. Harvey, cxxix. 



Tresca, Mr., 463. 



Treve and Durassier, Messrs., lxxxi. 



Trisection of an angle, 2. 



Tristram, Dr., 64. 



Troitzky, Mr., 355. 



Tromholdt, Mr., xxxv. 



Troost and Hautefeuille, Messrs., lvi., 208, 



460. 

 Trout, food for, 433. 



in Australia, 307. 

 Trout -eggs from Tasmania, distribution 



of, 420. 

 Trouvelot, Mr., xxvii., xxxii. 

 Trumbull, Dr. J. H., clxv. 

 Trumpet for divers, new, 470. 

 Tulipeae, sub-order of, 371. 

 Tungstate of soda for timber, 466. 

 Tungsten-steel, 464. 



Tuning-fork, observing vibration of, 130. 

 Tunnels and bridges, ccliii., ccliv. 

 Turkey, introduction of American, 354. 

 Turkish geological specimens, 333. 

 Turner andVanderpool, Messrs., cclxxxii. 

 Turn-table, self-centring, cxxxv. 

 Turrell, Dr., 389. 

 Turtles, ccii. 

 Tuson, Prof. E.V., 424. 

 Tuttle, Prof. Albert, 572. 

 Twickenham Observatory, xxii. 

 Twining, Major, 300. 

 Twitchell, Mr. Henry, xxiii. 

 Tylor, Mr. E. B., clxxi., 331. 

 Tyndall and Magnus's Experiments, lviii. 

 Prof., li. 



U. 



Ulke, Mr., 573. 



Underground temperatures, 68. 



linger, Mr. F.W., clxxiii. 



United States Coast Survey, 296, 302. 



Fish Commission, cxxiv., 



clxxvii., ccxxvii., 419, 429, 



572. 



Fish Commissioner, 408, 411. 



Geological Survey of the 



Territories, 364. 

 merchant vessels, list of, 58S. 

 pig-iron in, 459. 

 salmon -hatching establish- 

 ment, 434. 

 Urine, new substance in, 320. 

 Usson, Mr., clxxx., clxxxiv. 

 Utah Lake, 64. 

 Utes, or Pai-Utes, 293. 

 Utilizing furnace-slag, 460. 



Vacuum thermometer, 151. 

 Vanadium in rocks, 205. 

 Van Asten, Dr., 45. 

 Van Beneden, Mr. E., 358. 

 Van der Willigen, 146. 

 Vanderwaals/Mr., 12S. 

 Vanilla, artificial, 457. 



manufacture of artificial, 217. 

 Vanillin, artificial, cclxxxvi. 

 Van Tenac, Mr., 517. 

 Van Tieghem, Prof. P., ccxii. 

 Van Vleck, Prof., 572. 

 Vapor in the atmosphere, weight of, 16. 

 Vapors in the atmosphere, 87. 

 Variability of solar temperatures, 17. 

 of terrestrial latitudes, 31. 

 Variable stars, 59. 



