134 



INDEX. 



Huronian rocks, 74, 88. 



Hyalite in Roman masonry at Plom- 



bieres, 35. 

 Hyalosiderite, its relation to peridote, 



61. 



Hydration of minerals &c. See Sol- 

 vents. 

 Hydatothermic, Bunsen's name for 



hydrothermal, 35. 

 Hydrocalcite, 7. 

 Hydromagnesian silicates (serpen- 



tinous minerals, &c.), 4-7. 

 Hydromagnesite, 7. 

 Hydro-phlogopiteschists, 2. 

 Hydrothermal action on rocks and 



minerals. See Solvents. 

 Hydrous aluminate of magnesia 



(volknerite), 7. 



magnesia (brucite), 7. 



silo-magnesian marl. See Sepi- 



olyte. 



Hypersthene, 7, 62. 

 Hypersthenyte of Elfdalen, 12, 62, 



123. 



I. 



Idocrase, 7, 14, 51. 



Imitative shapes in minerals. See 



" Eozoon^ " canal system." 

 in dolomite. See Co- 



ralloids. 



Imprunetta, ophite of, 46. 

 India, Northern, fossils of, 104. 

 Infra-Liassic fossils in metamorphics 



of Mont-Cenis district, 32. 

 Intrusive or igneous serpentine rocks, 



xiv, xliv, 46. 

 Ireland, Geological Survey of, 39, 48, 



90. 



, west coast of, affected by Gulf- 

 stream, 116. 

 Irish Academy, Proceedings of 



Royal, 17, 20, 29, 32. 



dolomites, 94. 



Isle of Skye, Eozonal marble of, xvi, 



xxxviii, 11, 32, 41, 57, 87, 89, 



96. 



Italy, Central, ophites of, 97. 

 , Northern, vegetation of, 116. 



J. 



Jannettaz, M. Edouard, referred to, 



13. 

 Jardin des Plantes, specimens in 



Geological Museum of, 13. 



Jersey, diorite of, changed into cal- 



cite, 26, 60. 



, New. See Amity. 



Jervis, Chevalier, on serpentine rocks 



of Italy, 46. 

 Johnston, Prof. James F. W., on mag- 



nesian limestones of Durham, 91. 

 Jointing in rocks, 53, 80, 90, 94, 106- 



112, 118, 119. 

 Jones, Prof. T. Rupert (" T. R. J."), 



on " Eozoon" xi, xiv, xxii, xlii, 



xlvi. 

 Judd, Prof. J. W., volcanic rocks of 



Scotland, 97. 

 Jungfrau, occurrence of " Eozoon" 



near the, 31. 

 Jurassic ophite of Skye, occurrence 



of " Eozoon " therein. See Isle of 



Skye. 



metamorphics, 31, 32, 87. 



Jurolla, vapours still disengaged from 



lava of, 65. 



K. 



Kalkgebirg (Todte Alps, Engadine), 

 lamellar ophi-calcite of, 11. 



Kammererite a serpentinous mineral, 

 5. 



Kaolin, Prof. Heddle on, 39. 



Kara Sea, its genial temperature, 

 116. 



Karsten's 'Archiv fur Mineralogie,' 

 32. 



Karstenite pseudomorphosed into 

 selenite, 23. 



Keilhau, M., on hemithrene of Scan- 

 dinavia, 53. 



Kerguelen's Land, its relation to the 

 earth's volcanic girdle, 117. 



Keuper of Cheshire, its rock-salt, 92. 



Kilkenny coal-beds, their place in 

 the Carboniferous system, 101. 



Killas, serpentinized, 2, 43. 



Kinahan, G. H., on serpentine of 

 Cannaver Isle, 39, 46. 



, opposes "Eozoon" xxvii. 



King, Dr. Clarence, on Wahsatch 

 mountain-mass, 111. 



King, Prof. William. See Rowney. 



, on metasomatosis, 28. 



, on a silo-carbacid rock in 



Ceylon &c., xxix. 



, reply to Dr. W. B. Carpenter, 



xiii. 



, on Permian limestones of Dur- 

 ham, 94, 118, 119. 



