X co:nte>^ts. 



Sorby's conclusions, G6, G7 ; objections to their theories, G7. The organic origin 

 of meteoric iron and graphite, 67. Maskelyne's use of the term Siderollte, G8. 

 The terms Siderite and Ilolosiderite, G8. 



SECTION II. 



Pallasite G8-83 



GusTAV Rose's use of the term, G8. Definition of Pallasite, <o% ; arrangement of, 

 G8. — The Meteoric Pallasites, G9-75. Tucson, Arizona, G9. Hemalga, Peru, 

 69. Berdjansk, Russia, 69. Deesa, Chili, 70. Atacama, Bolivia, 70. Bitburg, 

 Prussia, 70. Hommoney Creek, North Carolina, 71. Singhur, India, 71. For- 

 syth, Missouri, 71. Anderson, Ohio, 71. Krasnojarsk, Siberia, 71, 72. Potosi, 

 Bolivia, 72. Rittersgriin, Saxony, 72. Breitenbach, Bohemia, 73. Steinbach, 

 Saxony, 73. Atacama, Chili, 73. Sierra de Chaco, Chili, 73. Newton Co., Arkan- 

 sas, 74. Meyellones, Bolivia, 74. Hainholz, Westphalia, 74. Lodran, India, 

 74, 75. 



Variety. — Cumberlandite, 75-83. 



Iron Mine Hill, Rhode Island, 75-79. State of the Iron of but little impor- 

 tance lithologically, 76. Microscopic veins, 76. Hercynite (?), 77. Tracing 

 altered conditions of Cumberlandite, 77-79 ; specific gravity of, 79 ; diminish- 

 ing specific gravity with alteration, 80. First published description of Cumber- 

 landite, 80. Study of other iron-bearing rocks, 80, 81. Taberg, Sweden, 81. 

 General description of Pallasite, 81 ; of Cumberlandite, 81, 82. Chemical 

 analyses of Pallasite, 82, 83. Chemical analysis alone suggests, but does not 

 prove, the specific relations, 83. 



CHAPTER III. 



THE PEPJDOTITES. 



SECTION I. 

 Introductory 84, 85 



Rosenbusch's use of the term Peridotite, 84. How employed in this work, 84. 

 Order of arrangement in tlie Peridotites, 84. The needlessness of subdivisions of 

 Peridotite, 84 ; yet subdivided here in conformity to genei'al usage, 85. Defini- 

 tion of Dunite, 85. Proposal of the name Saxonite, 85. Definition of Lkerzolite, 

 85. Proposal of the name Buchnerite, 85. Definition of the terms Eidysite^ 

 Picrite, Serpentine, Porodite, and Tufa, 85. 



SECTION II. 



The Meteoric Peridotites 86, 106 



Variety. — Dunite, 8G. 

 Chassigny, Prance, 86; glass in, 86, 105. 



