INDEX. 



141 



Thomson, James, his belief in organic 

 structures in Tarbert graphic gra- 

 nite, xxxix. 



Thuringerwald, alabaster of the, 

 43. 



Tiree, marble of, 48, 55-59. 



Titaniferous peridote of Zermatt, 61. 



Torrin (Isle of Skye), eozoonal ophite 

 of, 41. 



Totaigite a calcareous serpentine, 

 5. 



Tourmaline, 7. 



Towanrieff hill (Scotland), serpen- 

 tine of, 38. 



Trans. Cambridge Phil. Society, 

 37. 



Trans. Royal Soc. of Edinburgh, 

 38. 



Tremadoc rocks, scarcity of limestone 

 in, 83. 



Tremolite of St. Gothard, 39, 125. 



Trenton metamorphics. See West- 

 Chester Co. 



Triassic metamorphics, 31, 32. 



deposits formed in inland seas, 



92, 93. 



Trinity Land, its relation to the 

 earth's volcanic girdle, 117. 



Tschermak, G., on serpentine, 40. 



Tudor " Eozoon" xxiii. 



Tunaberg (Sweden), metamorphics 

 of, 62. 



Tuscany, recent formation of serpen- 

 tine in, 97. 



Tweedian beds, their position in the 

 Carboniferous system, 101. 



Twining, Frederick, of Cleggan 

 Tower, 48, 50. 



Tyrol, dolerite of Bufaure in the, 36, 

 37, 43, 91. 



, pseudomorphs in serpentine 



after augite at Monzoni in the, 36. 



U. 



Uddevalla (Sweden), peridolyte of, 



62. 



Unkel, peridote of, 68. 

 Unst (Shetland), serpentine rocks of, 



38. 

 Upper Cambrian metamorphics of 



Eastern North America, 33. 

 Ural talcose rock, 62. 

 Urkalk, 47, &c. See Corrigenda. 



V. 



Yaalite a serpentine, 5. 



Vallecas. See Sepiolyte. 

 Vegetation of Arctic regions, 116, 



117. 

 Vein-masses of granite and limestone. 



See Dyke-like masses and Hunt 



on ditto. 



Venerite a serpentine, 5. 

 Vennor, Henry G., on thickness of 



Archaean rocks, 73, 74. 

 , his discovery of "Eozoon" on 



the Gatineau, xlvi. 

 Vermont, North-western, calciferous 



formations of, 84. 

 Vertical movements of the earth's 



crust. See Cyclical ditto. 

 Vesuvius, peridots in lava of, 65, 69, 



70, 71. 

 Vigan (Dept. du Gard), calci-feld- 



spathic gneiss of, 13. 

 Vilanova y Peira, Juan, opposes 



"Eozoon" xxxv. 

 Villa Rota, its slate changed into 



schistose serpentine, 44. 

 Villarsite a serpentine, 5. 

 Virginia (U. S), terraces of, 113. 

 Voigtland, diorite of, changed into 



serpentine, 37. 



Volcanic girdle of the earth, 117. 

 Volcanoes of the western borders of 



the two Americas, 117. 

 Volknerite, 7. 



Volterra, dykes of ophite at, 46. 

 Von Buch, his theory of dolomiti- 



zation, 91. 

 Von Leonhard on origin of hemithrene 



masses, 53. 



Von Morlet on dolomite, 91. 

 Von (Eynhausen on calcite dyke near 



Auerbach, 51. 



Vorhauserite a serpentine, 5. 

 Vosges. See Mont St. Philippe. 



W. 



Wahsatch, mountain-mass of, 111. 



Westchester Co. (New York) meta- 

 morphics, their age and origin, 33, 

 59, 88, 89. 



Westoe ^Durham) Sigillaria-saiid- 

 stone, its place in the Permian 

 system, 102. 



Wick, M., on the age of the crys- 

 tallines of the Central Alps, 

 81. 



Wilson, Dr. James, an early discoverer 

 of " Eozoon" ix. 



Winter-night of darkness in the Arctic 



