INDIA 



liS7 



', 444. 645. 



( 'ur\ aturc (.f face, 2tH. 

 ( 'tir\ of hardness, 250. 



itc, 481. 604, 015, tl.xl. 



toohroite, nil. 



( 'yaiintricliiti-, ' 

 ( 'yclic twins, 142. 

 (ylm.lnte, i,_- 1. 



Danalitc, 649. 

 Danburitc, <>f,l. 

 Darapskito, 637. 

 Datolitc, 403, 603,664. 

 Dawsonite, 661. 

 Decrepitation, 552. 

 Dernantoid, 444. 

 Dendritic, 269. 

 Density, 280. 

 Derbylite, 634. 

 Derivation of forms, 58. 

 Descloizite, 514, 648. 

 Description of mini-nils, 281545. 

 Descriptive terms, 265. 

 Determination tables, 595. 

 Deweylite, 671, 678. 

 Diadochite, 654. 

 Diallage, 424. 

 Diamond, 881, 682. ' 

 Diaphorite, <i:M. 

 Diasporc, 365, 680. 

 Diatomaceous earth, 871. 

 Dichroism, 189, 

 Dichroite, 440. 

 Dichroscope, 190. 

 Dickinsonitc, 653. 

 Didigonal axis, /.;. 



equatorial, 113. 



polar, 117. 

 Dietrichite, 636. 

 Dietzeite, 663. 

 Digonal axis, l ',. 



equatorial, / .'/. 



holoaxial, 118. 



polar, 194. 

 Di hexagonal alternating, 89. 



axis, 14- 



equatorial, 85. 



hrinipynmiid, 92. 



polar, 92. 



pyramid, 86. 



prism, 87. 

 Dihydrite, 644. 

 Diinotasilicic iicid, 234. 

 Dimorphism, 290. 

 Diopside, 423, 677. 

 Dioptase, 99, 452, 644. 

 Diorthosilicate, 233. 

 Dioxides, 347. 



Diplojil, SO. 



Directional properties, S. 

 Dialuite, 650. 

 Dispersion, of light, 106. 



of optic axes, 906. 



of tin- biMTtrix, 907. 



.ro.s.,,.,1. for. 



horizontal, 208. 



inclined, 208. 

 Disthenc, 462. 

 Distortion, 28. 

 Ditesseral central, 47. 



polar, 64- 

 I )i tetragonal alternating, 69. 



axes, 14- 



equatorial, 65. 



hemipyramid, 72. 



polar, 71. 



prism, 67. 



pyramid, 66. 

 Ditrigonal axis, 14- 



equatorial, /"/. 



hemipyramid, 705. 



polar, 103. 



prism, 102. 



pyramid, 101. 

 Dodecahedron, pentagonal, 60. 



rhombic, 52. 

 Dog-tooth spar, 381. 

 Dolerophane, 642. 

 Dolomite, 99, 387, 602, 660. 

 Dome, 113, 115. 

 Domeykite, 621. 

 Double refraction, 168. 

 Drawing of crystals, SI. 

 Drusy, 268. 

 Ductility, 258. 

 Dufrenite, 510, 515, 654. 

 Dufrenoysite, 622. 

 Dull luster, 27f . 

 Dumortierite, 681. 

 Durangite, 653. 

 Dyscrasite, 625. 

 Dysluite, 377. 



Ecdemite, 646. 

 Eclogite, 445. 

 Edingtonite, 479, 671. 

 Effloresce, 225. 

 Eglestonite, 641. 

 Eisenrosen, 344. 

 Elaeolite, 440. 

 Elastic, 257. 

 Electron, Ml, 631. 

 Elements, 220, 232, 281. 



table of, 223. 

 Ellipsoid, 184. 



