134 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull.189. 
Mineralogy— Continued. 
Condensed titles of papers — Continued. 
Twin crystals of selenite, Hills, 2591. 
Twinned crystals of zircon, Hidden and Pratt, 
2516. 
Two new American meteorites, Preston, 4470. 
Two new occurrences of corundum in North 
Carolina, Pratt, 4449. 
Uraninite in Colorado, Pearce, 4273. 
Vanadium and molybdenum in rocks of the 
United States, Hillebrand, 2584. 
Variscite from Utah, Packard, 4235. 
Wardite, a new phosphate of alumina, David- 
son, 1144. 
Zeolites of Minnesota shore, Winchell, 6365. 
Zirkelite, Wadsworth, 5772. 
Minerals described. 
Acanthite, Chester, 878. 
Actinolite, Hoffman, 2657. 
Adularia, Winchell, 6368. 
Aguilarite, Genth, 1967. 
Alabandite, Moses and Luquer, 4045a. 
Albertite, Rutherford, 4723. 
Albertite, Taff, 5291. 
Albite, Penfleld, 4306. 
Allanite, Eakle, 1585. 
Allanite, Emerson, 1672. 
Allanite, Hobbs, 2633. 
Allanite, Hoffmann, 2659. 
Allanite, Ries, 4628. 
Altaite, Hoffmann, 2657. 
Alunite, Hurlburt, 2813. 
Alunogen, Hoffmann, 2657, 2559. 
Amphibole, Palache, 4241. 
Amphibole, Turner, 5481. 
Amphibolite, Goldsmith, 2044. 
Amphibolite, Turner, 5471. 
Andradite, Harrington, 2297. 
Andrasite, Hoffmann, 2657. 
Anglesite, Genth, 1968. 
Anglesite, Hoffman, 2657. 
Anhydrite, Nicol, 4097. 
Ankerite, Rogers, 4652. 
Anorthite, Clarke, 923. 
Anorthite, Hillebrand, 2585. 
Anorthite, Pratt, 4438. 
Antholite, Coleman, 1028. 
Anthophyllite, Pratt, 4436, 4439. 
Apatite, Blake, 452. 
Apatite, Ells, 1643. 
Apatite, Hobbs, 2644. 
Apatite, Prindle, 4475. 
Aragonite, Hoffmann, 2659. 
Aragonite, Sherzer, 4954. 
Arquerite, Hoffmann, 2657. 
Arsenolite, Hoffmann, 2657. 
Arsenopyrite, Hobbs, 2643. 
Asbeferrite, Goldsmith, 2044. 
Asbestus, Merrill, 3953. 
Asphaltum, Sherzer, 4954. 
Atacamite, Moses, 4036. 
Augite, Hobbs, 2631. 
Azurite, Hobbs, 2643. 
BaddeckPe, Hoffmann, 2660, 2662. 
Barite, Hobbs, 2643, 2644. 
Bastnasite, Hillebrand, 2581, 2585. 
Beaumontite, Powell, 4431. 
Mineralogy— Continued. 
Minerals described — Con tinued. 
Berthierite, Turner, 5473. 
Bertrandite, Penfield, 4314. 
Beryl, Kunz, 3295. 
Beryl, Pratt, 4436, 4439. 
Beryl, Ries, 4629. 
Biotite, Turner, 5481. 
Biotite, Walker, 5827. 
Biotite, Westgate, 6015. 
Bismuthinite, Hoffmann, 2657. 
Bismutite, Genth, 1965. 
Bismutite, Penfield, 4297. 
Bixbyite, Penfield and Foote, 4315. 
Boleite, Genth, 1968. 
Bournolite, Hoffmann, 2659. 
Bowlingite, Winchell, 6363. 
Brongniardite, Spencer, 5160. 
Bronzite, Hidden and Pratt, 2517. 
Brookite, Kunz, 3288, 3289. 
Cacoxenite, Goldsmith, 2044. 
Calamine, Hoffmann, 2657. 
Calamine, Pratt, 4432. 
Calaverite, Hillebrand, 2575, 2576, 2585. 
Calaverite, Penfield, 4310. 
Calcite, Emerson, 1672. 
Calcite, Farrington, 1802, 1803. 
Calcite, Gratacap, 2159. 
Calcite, Hobbs, 2643. 
Calcite, Hovey, 2773. 
Calcite Keyes, 3050. 
Calcite, Leonard, 3457. 
Calcite, Palache, 4242. 
Calcite, Penfield and Ford, 4327, 4328. 
Calcite, Powell, 4431. 
Calcite, Sherzer 4954. 
Caledonite, Farrington, 1802. 
Caswellite, Chester, 879, 880. 
Celestite, Hoffmann, 2657. 
Celestite, Sherzer, 4954. 
Celestite, Spencer, A. C, 5113. 
Cerusite, Hoffmann, 2657. 
Cerussite, Hobbs, 2643, 2644. 
Cerussite, Hobbs, 2629. 
Cerussite, Pratt, 4432. 
Cerussite, Weed and Pirsson, 5935. 
Chabazite, Hoffmann, 2657. 
Chabazite, Patton, 4261. 
Chabazite, Pratt, 4436. 
Chalcophanite, Penfield and Kreider, 4308. 
Chalcopyrite, Bush, 669. 
Chlorastrolite, Winchell, 6364. 
Chlorastrolite, Winchell and Grant, 6376. 
Chlorotoid, Hobbs, 2644, 2645. 
Chondrodite, Penfield and Howe, 4307. 
Chromite, Pratt, 4441, 4445, 4450, 4451. 
Chrysolite, Penfield and Forbes, 4312. 
Cinnabar, Hoffmann, 2657. 
Clinochlore, Hoffmann, 2657. 
Clinohedrite, Penfield and Foote, 4320. 
Coloradoite?, Hillebrand, 2583, 2585. 
Cookeite, Hoffmann, 2657. 
Cookeite, Penfield, 4300. 
Copper, native, Wolff, 6413. 
Corundum, Emerson, 1672. 
Corundum, Hidden and Pratt, 2517. 
Corundum, Pratt, 4440, 4449. 
