INDEX II. 





Tiddeman (R. II.) on the physical liis- 

 tory of the deposits in the Victoria 

 cave^ 179. 



Topley (W.) on t]ie sub-Wealden ex- 

 ploration, 122 ; on the relation of the 

 parish boundaries in the south-east of 

 England togreat physical features, par- 

 ticularly to the chaik escarpment, 197. 



Tortulu incUnata, Prof. Lawson on some 

 specimens of, 129. 



Trachyte porphyries, Prof E. HuU on 

 the, of Antrim and Down, 111. 



Traquairia, W. Carruthers on, a radiola- 

 rian rhizopod from the coal-measures, 

 126. 



Triangles, W. M. Adams on the men- 

 surator, a new instrument for the 

 solution of, 59. 



Tribe (A.) on the precipitation of silver 

 by copper, 84. 



and Dr. J. H. Gladstone on the 



mutual helpfulness of chemical affi- 

 nity, heat, and electricity in producing 

 the decomposition of water, 75. 



Tridiametral quartan curves, F.W.New- 

 man on, 22. 



Trimerella, T. Davidson and Prof. W. 

 King on the genera Dinolulus, Mono- 

 merella, and, lOO. 



Tristram (the Piev. Canon) on the geo- 

 logy of Moab, 123. 



Tumuli, C. Spence Bate on an explora- 

 tion of some, on Dartmoor, 175. 



, C. T. Crciger on, at Ascheraden in 



Livonia, 178. 



United States, Prof J. Hall on the re- 

 lations of the Middle and Upper 

 Silurian rocks of the, 103. 



*Unwin (G.) on specimens of agate and 

 other natural colloid silica, 85. 



'Upward (xV.) on drilling-apparatus for 

 gas- and water-mains, 252. 



Uranium, salts of. Col. Stuart Wortley 

 on the importance of thC; in photo- 

 graphy, 45. 



Vesuvius, G. Gladstone on the dust 

 thrown up by, during the late erup- 

 tion, 74. 



, G. vom Eatli on a remarkable 



block of lava ejected by, at the great 

 eruption April 1872, which proves the 

 formation of silicates through subli- 

 mation, 120. 



Victoria cave, report on the, explored 

 by the Settle-Cave-Exploration Com- 

 mittee, by W. Boyd Dawkins and 

 R. H. Tiddeman, 178. 



* Villages and country parishes, Prof. 



Hull on a proposal for supplying pure 

 water to, in central and eastern divi- 

 sions of England, 22(3. 

 Vorticellidcv, Prof. Allman on some 

 points in the development of, 130. 



Wake (C. S.) on the origin of serpent- 

 worship, 198. 



Walker (J. F.) on dinitrobrombenzene, 

 85. 



Wanklyn (J. A.) on the continuous pro- 

 duction of oxygen, 85 ; on some new 

 methods of analyzing the ethers, 85. 



Ward (Dr. T. Ogier) on a phenomenon 

 connected with diffraction, 45. 



* on the formation and stratification 



of sedimentary rocks, 123 ; on slicken- 

 sides, or rubbed, polished, or striated 

 rocks, 123. 



Water, deep-sea, W. Lant Carpenter on 

 the mode of collection of samples of, 

 and of their analysis for dissohcd 

 gaseous constituents, employed on 

 board H.M.S. 'Porcupine' during the 

 summers of 1860 and 1870, 72. 



, Dr. J. H. Gladstone and A. Tribe 



on the mutual helpfulness of chemical 

 affinity, heat, and electricity in pro- 

 ducing the decomposition of, 75. 

 -, A. M'^Callum Gordon on the dis- 



tribution of pure, to dwellings, 246. 

 -, Prof. Hull on a proposal for sup- 



plying pure, to villages and country 

 parishes in central and eastern divi- 

 sions of England, 226. 

 -, C. J. Woodward on a modification 



of Hofmann's apparatus for the elec- 

 trolysis of, 87. 

 Waves, C. W. Men-ifield on the uiea- 



sui-ement of, 247. 

 Wealden formation, R. A. C. Godwin- 

 Austen on the, 91. 

 Weapons, primitive, of ancient India, Sir 



Walter Elliot on the, 180. 

 Webster (Thomas) on the advancement 



of science due to patented inventions, 



252. 

 Weddo of Cejdon, Prof. Rolleston on 



the, 194. 

 Weldon (W.) on the manumcturo of 



chlorine by means of niangauite of 



magTiesium, 86. 

 Western, extra-, communities, .1. Kaines 



on western anthropologists raid, 1S9. 

 Whale, bottle-nose, Prof. Strulhers on 



the occurrence of tinger-muscles in 



the, 150. 

 Whales, great fin-. Prof. Strulhers on 



the sternum and pelvic bone in the 



right whale, and in, 156. 



