264, 



REPORT — 1871. 



Trachypetra bufo (White), R. Trimen on 

 a curious South- African grasshopper, 

 134. 



Traill (W. A.) on parhelia, or mock 

 suns, observed in Ireland, 50. 



and Prof. Hull on the relative 



ages of the granitic, plutonic, and vol- 

 canic rocks of the Mourne Mountains 

 and Slieve Croob, co. Down, 101. 



Transparency, G. J. Stoney on one cause 

 of, 41. 



in glass, Prof. Stokes on the re- 

 searches of the late Rev. W. V. Har- 

 court on the conditions of, 38. 



Trappean rocks in Fifeshire, W. Car- 

 ruthers on the vegetable contents of 

 masses of limestones occurring in, 94. 

 Traquair (Prof R. H.) on the restoration 

 of the tail in Protopterus amiedens, 

 143. 



* , additions to the fossil vertebrate 



fauna of Burdiehouse, near Edinburgh, 

 111. 

 Tribe (Alfred) and J. H. Gladstone, ex- 

 periments on chemical dynamics, 70 ; 

 on the corrosion of copper plates by 

 nitrate of silver, 29. 

 *Trilobites, one of the earliest forms of, 



exhibited by Prof Harkness, 100. 

 Trimen (Roland) on a curious South- 

 African grasshopper, Trachypetra 

 hufo (White), 134. 

 Trout, brown, A. G. More on the oc- 

 currence of, in salt water, 133, 



, tailless, of Islay, 0. W. Peach 



on the so-called, 133. 

 Truck system, Lord Neaves on the, 



198. 

 Tuckwell (the Rev. W.), obstacles to 



science-teaching in schools, 57. 

 *Tuke (Dr. J. Batty) and Prof Ruther- 

 ford on the morbid appearances no- 

 ticed in the brains of insane people, 

 144. 

 Turner (Prof) on the placentation in 

 the Cetacea, 144 ; notes on the cervi- 

 cal vertebrEe of Steypirethyr (Balte- 

 noptera Sibhaldii), 144 ; Address to the 

 department of Anthropology, 144 ; on 

 human and animal bones and flints 

 found in a cave at Oban, 160. 

 Typo-nucleus theory. Dr. Otto Richter 

 on the chemical constitution of gly- 

 colic alcohol and its heterologues, as 

 viewed in the new light of the, 78. 



•United States, C. G. Wheeler on the 

 recent progress in chemistry in the, 83. 



Ureas, Dr. Reynolds on the action of 

 aldehyde on the two primary^ 76. 



Uvula, Sir D. Gibb on the uses of the, 

 139. 



Valentine (James) on census reform, 



223. 

 Valleys and bays. Rev. J. Gunn on the 

 agency of the alternate elevation and 

 subsidence of the land in the forma- 

 tion of boulder-clays and glaciers, and 

 the excavation of, 100. 

 Vapour, R. Russell on the inferences 

 drawn by Drs, Magnus and Tyndall 

 from their experiments on the radiant 

 properties of, 5Q. 

 *Varley (C. F.) on a method of testing 



submerged electric cables, 48. 

 Vascular Cryptogamia, Prof. W. C. 

 Williamson on the classification of 

 the, 131. 

 Vegetable contents of masses of lime- 

 stone occurring in trappean rocks in 

 Fifeshire, W. Carruthers on the, and 

 the conditions under which they are 

 preserved, 94. 

 Visible motion, Prof. Balfour Stewart 

 on the temperature-equilibrium of an 

 enclosure in which there is a body in, 

 45. 

 Visual defect, Philip Braham on a set of 

 lenses for the accurate correction of, 37, 

 •Vladivostok and Nikolsk, South Us- 

 suri district, letters from, by the Ai-- 

 chimandrite Palladius, 187. 

 Volcanic action, outline of the history 

 of, around Edinburgh, 88. 



rocks of the Mourne Mountains 



and Slieve Croob, Prof. Hull and W. 

 A. Traill on the relative ages of the 

 gi-anitic, plutonic, and, 101. 

 Volcanoes, P. W. Stuart Menteath on 



the origin of, 104. 

 Voltaic action, T. Bloxam on the in- 

 fluence of clean and unclean surfaces 

 in, 47. 

 Vortex-rings, Prof. Ball on the resist- 

 ance of the air to the motion of, 26. 

 * — ; — , H. Deacon, experiments on, in 

 liquids, 29. 



Wake (C. S) on man and the ape, 162, 

 W^alker (R. Bailey) on the organization 



of societies, nationally and locally 



considered, 223. 

 Wallons, Dr. Charnock and Dr. 0. 



Blake on the physical, mental, and 



philological characteristics of the, 148. 

 *Wanklyn (J. A.) on the constitution of 



salts, 83. 

 •Ward (Capt.) on the American Arctic 



Expedition, 190. 



