INDEX. 



A. 



Abysses of the ocean, deposits in, 



75, 99, 115. 

 Acadian rocks, 84, 88. 

 Acclimatization of plants, 117. 

 Achiardi, A. d', on argillaceous schist 



changed into serpentine, 44, 97. 

 Agalmatolytes, 2, 43. 

 Aker (Finland), hemithrenes &c. of, 



xvi, 23, 40, 57, 63, 87. 

 Alabaster, a methylosed product, 43. 

 Alberese (Cretaceous limestone) ser- 



pentinized by euphotide, 97. 

 Alkaline salts in rocks, 30, 31. 



1 ac tion of, 35, 79. 



Alleghanies, terraces of the, 113. 

 Allomorphs of serpentine, 6, 19. 

 Allport, Samuel, on peridote &c., 34, 



69, 70, 71. 

 Alps, ranges of the, 111. 



, terraces of the, 113. 



Aluminate of magnesia. See Spinel. 

 Aluminous serpentine minerals, 5. 

 America, mountain-ranges of, 111, 



113. 



, terraces of North, 113, 116. 



, volcanoes of, 117. 



Amianthus with fibres of calcite, 16. 

 Amity (New Jersey), hemithrene of, 



xxiv, xxviii. Hi, 10, 23, 56, 57. 

 Ammonites in metamorphics of 



Switzerland, 32. 

 Ammonitidse in Austria and Northern 



India, 104. 

 Andalusite ferruginated into stauro- 



lite, 23. 



Andes. See Patagonian. 



Anhydrous magnesio-siliceous mi- 

 nerals, 7. 



minerals of metamorphic rocks, 



35. 



' Annales des Mines,' 28, 35. 



Antarctic Circle intersected by the 

 earth's volcanic girdle, 117. 



Anthophyllite, 7. 



Antigorite, ferruginous serpentine, 5. 



Aphrodite a siliceous serpentine, 5, 44. 



Apjohn, Dr. J.,on origin of dolomite, 

 91, 94, 95. 



Appalachian ridges, 111. 



Aquosity of rocks, 35. 



Aragonite(?) replacing chrysotile, 21. 



Archaean " crystalline limestones," 

 72-82. 



ophites. See Serpentine rocks. 



rocks, 29, 32, 33, 34, 56, 72-83, 



86, 87, 88, 91, 96, 111. 



Archceocyatlius atlanticus, 85. 



1 Archiv fur Mineralogie,' 32. 



Arctic regions under climatal ameni- 

 ties, 116. 



intersected by the earth's 



volcanic girdle, 117. 



Ardtrea magnesian limestone, Per- 

 mian, 102. 



Argile magne"sienne, 2, 29, 44. 



Argillaceous limestone converted into 

 rottenstone, 43. 



Argillytes, 34, 43, 44, 86. 



Arkoses, 31. 



Asbestiform serpentine. See Chry- 

 sotile. 



M 



