INDEX 



201 



Ferrite, alpha veining in, 51. 

 definition of, 26, 32, 33. 

 in pearlite, 29, 33, 39. 

 Neumann lines in, 89, 90. 

 properties of, 26. 



transformation of iron-carbon into, 

 32. 

 Ferrite and cementite eutectoid, 29, 33, 



35, 39. 

 Ferrosic oxide, 24, 73-75. 

 Ferrous sulphide, 86. 

 Flight, alterations by, 24, 72. 

 Forsterite, 25. 

 Forsyth County * meteorite, 76, 88, 90, 



91, 114, 128, 129, 187. 

 Fort Duncan 2 meteorite, 114, 125, 176. 

 Four Corners ' meteorite, 25, 63, 114, 



123. 

 Freda'2 meteorite, 73, 79, 80, 114, 148. 



Gamma-alpha transformation. (See 



under Transformation.) 

 Gamma-delta transformation. (See 



under Transformation.) 

 Gamma nickel iron, 14. 

 Gamma twinning. (See under Twin- 

 ning.) 

 Glass, 25. 



Glorieta Mountain i meteorite, 20. 

 Grand Rapids ^ meteorite, 114, 123, 133. 

 Grant! meteorite, 114, 163, 192, 197. 

 Granulation, alpha, 51. 



by heat alterations, 75. 



in artificial iron, 50, 51. 



in kamacite, 11, 49, 50, 62, 71-73. 



in meteorites, 49-53, 63. 

 Graphite, associated with troilite, 19, 

 21, 53. 



in hexahedrites, 52, 53. 



in iron alloys, 23, 26, 34. 



in meteoric irons, 83. 



or free carbon, 21, 26, 83. 



properties of, 21. 



tests for, 21, 95, 103. 

 Gufifey 2 meteorite, 83, 114, 139. 



Hammond ' meteorite, 71. 

 Heat alterations, 70. (See also Re- 

 heating.) 



cosmic, 59, 60, 70-76, 91. 



crystallization by, 49, 74. 



efi"ect on Neumann lines by, 72, 73, 



75, 76, 91. 

 fusion crusts from, 73. 

 granulation by, 75. 

 history of research on, 70. 

 in hexahedrites, 54, 72, 76. 

 in schreibersite, 20, 71, 72, 78, 



79, 91. 

 in taenite, 70, 71, 74, 75. 

 in troilite, 78. 

 of kamacite, 70. 

 producer of nickel-poor ataxites. 



69, 71, 75. 

 zones of, 72, 76. 



' Octahedrite. 



2 Ataxite, nickel-rich. 



3 Hexahedrite. 



* Ataxite, nickel-poor. 



Heating, artificial, 71. 



terrestrial, 72. 

 Helt Township i meteorite, 79, 80, 92, 



93, 114, 170, 175, 196. 

 Henbury ' meteorite, 114, 128. 

 Hex River Mountains ^ meteorite, 114, 



168, 171. 

 Hexahedrites, 52. 



alteration zones in, 51, 72, 76. 



analyses of, 10, 51. 



brecciated, 4, 52. 



carbon in, 21. 



classification of, 4, 52. 



cleavage in, 4, 5, 49. 



cobalt in, 4. 



composition of, 4, 11, 38, 45, 51-54. 



daubrMite in, 18, 52, 53. 



definition of, 4, 11, 38, 47, 52. 



granular, 49, 52, 53. 



graphite in, 50, 52, 53. 



heat alterations in, 54, 72, 76. 



Neumann lines in, 4, 5, 50, 52, 53, 



76, 88-90. 

 nickel in, 4, 11, 51. 

 nonmetallic inclusions in, 52. 

 normal, 4, 52, 53. 

 plessite in, 17, 53, 54, 65. 

 proportions in meteorites, 8. 

 rhabdites in, 19, 52, 53. 

 schreibersite in, 4, 19, 52, 53. 63. 

 sheen in, 11, 53. 

 taenite in, 17, 53, 54. 

 transitional, 54, 64. 

 troiUte in, 4, 13, 18, 52, 53. 

 [The following meteorites are hexa- 

 hedrites : 

 Braunau, Cedartown, Central 

 Missouri, Coahuila, Desoto- 

 ville, Fort Duncan, Hex River 

 Mountains, Holland's Store, 

 Horse Creek, Indian Valley, 

 Kendall County, New Balti- 

 more, Otumpa, Rio Loa, 

 Sanchez Estate, Sandia Moun- 

 tains, Scottsville, Sierra Gorda, 

 Tombigbee River, Walker 

 County — q. v.] 

 Hoba^ meteorite, 114, 144. 

 Holland's Store ^ meteorite, 114, 126, 



188. 

 Horse Creek^ meteorite, 5, 49, 59, 63, 



64, 114, 180, 181. 

 Hysteresis, 28, 40, 42. 



lUinois Gulch^ meteorite, 50, 83, 114, 



137, 141. 

 Illumination, central, 6, 70. 

 oblique, 1-3, 13. 

 vertical, 1, 3, 12, 13, 16. 

 Indian Valley' meteorite, 114, 125. 

 Intermetallic compound, 39, 40. 

 Iquique^ meteorite, 58, 83, 114, 137, 

 142. 



