INDEX 



Numbers printed in italics refer to Part I; those in black-faced type, to 

 1'ait 11 ; and those in roinan type, to Part III. 



AMireviutions, 595, 617. 

 Acanthite, 301, 630. 

 Achroite, 475. 

 Aeieiilar hal>it, 266. 

 Acid salts, r.'7 

 Acids, silicic, 2.'W. 

 Acmite, 420, 660. 

 Aetmolite, 433, 677. 

 Acute bisectrix, 173. 

 Adamantine luster, 279. 

 Adamantine spar, 343. 

 Adamite, 513. 

 Adelite, 653. 

 Adularia, 408. 

 .KniKiiiatite. 435, 659. 

 .Eschynite, 634, 668. 

 Agate, 360. 



Moss, 360. 

 Aggregate, 265. 

 Agricolite, 651. 

 Aiiuilarite, 627. 

 Aikinite, til's. 

 Airy' s spirals. 197. 

 Alabanditc, 304, 631, 666. 

 Alabaster, 537. 

 Albite, 411, 604, 614, 676. 

 Alexandrite, 378. 

 Algodonite, 621. 

 Alkalies, 222, 562. 

 Alkaline earths, 565. 

 Alkaline reaction, 565. 

 Allaetite, <;.">:.'. 



Allanite. 468, 596, 604, 633, 658. 

 Allemontite, 620. 

 All.ichiMte, 622. 

 Allophane, 502, 678. 

 Alniaiidite, 444, 659. 

 Altaite, 625. 

 Alternating axis, 15. 



symmetry, 16. 

 Alum, 542. 

 Alumian, 677. 



Aluininite, 233, 337, 542, 677. 

 Aluminium, Tests, 568. 

 Alunite, 541, 679. 



Alunogen, 542, 600, 638. 

 Alurgite, 672. 

 Amalgam, i31. 

 Amaranite, 636. 

 Amazon stone, 411. 

 Aml.lygonite. 512, 657. 

 Amethyst, 359. 

 Ammonium, tests for, 565. 



nriiliiiiis, 3, 238. 

 Ani|,liiboles. 431, 482, 604, 608, 615. 

 Amplitude, 181. 

 Amygdaloidal, 271. 

 Amyjj'lule. 271. 

 Analcite, 485, 603, 610, 673. 

 Analogous pule, 475. 

 Analyzer, 177. 

 Analysis, 227. 



Anatase (octahedrite) , 347, 351. 

 Andalusitc, 45t, 605, 616, 681. 

 An<le.-ine, 414. 

 Andorite, 623. 

 Andradite, 444, 659. 

 Angle, between faces, 10. 

 between normals, 12. 

 between optic axes, 05. 

 constancy of, 10. 

 critical, 166. 

 of extinction, 185. 

 Anglesite, 532, 602, 647. 

 Anhy.lrite, 531, 602, 662. 

 Anisotropie, 

 Ankerite, 057. 

 AniKil.crnite, 316, 517, 651. 

 Anoinite, 493. 

 Am.rtliite, 413, 604, 676. 

 Anthni)hylliti', 677, 682. 



ntilomms |><>le, 475. 

 Aiitimonides, %M. 

 Antimony, 23, 623. 

 glance, 295. 

 oxides, 346. 

 tests, 584. 



Apatite, 95, 5*8, 603, 611, 655. 

 Aphthitalite, 637. 

 Apjolmite. 639. 

 Aplome, 444. 

 Apophyllite, 48f, 603, 672. 



688 



