MINERALOGY. 463 



Barytocalcite. Composition discussed aud relation to alstouite (bromlite), with 



analysis, Becker, Zs. Kr., xii, 222. 

 Bastoxitk. Libramont, Belgium, analysis, Klcment, Miu. petr. Mlttli., viii, 21. 

 Beryl. Alexander County, North Carolina, crystals described, vom Rath, Ber. nied. 

 Ges. Bouu, Feb. 8; July 7. Occurrence of fine emeralds, W. E. Hidden, Am. J. 

 Sc, XXXII, 4d3. 

 Determiuafiou of the constants of elasticity, Voigt, Festschrift, Gottiugen. 

 Experiments on elasticity, Vater, Zs. Kr., xi, 582. 

 GlencuUen, Ireland, composition and general description Joly, Scientif. Proc. Roy. 



Dublin Soc, v, 49. 

 Ifinger, Tyrol, occurrence, Schuster, Miu. petr. Mitth., vii, 455. Analysis, Pri- 

 bram, id., viii, 190, 

 Stoueham, Maine, analysis and discussion of composition, S. L. Penfield aud D. 

 N. Harper, Am. J. Sc, xxxii, 110. Crystals described, W. E. Hidden, id., xxxii, 

 209. 

 Madagascar, analysis, Damour, Bull. Soc. Min., ix, 153. 

 Bekzkliite. Laugban, Sweden, crystals described and analysis, G. Fliuk, Bihang 



Vet. Akad. Handl., xii, 2, 27. 

 Bismuth. Twinning structure developed by pressure, Miigge, Jb. Min., i, 183. 

 BiOTiTE. Lake Superior, analysis, E. Claassen, Am. J. Sc, xxxii, 244. 



In nodular segregations in granit • of Craftsbury, Vermont, Calvin, Proc. Acad. 

 Nat. Sc, Philad., 19. 

 Bloedite. Leopoldshall, crystals described, Luedecke, Zs. ges. Nat., Lix, 157. 

 BoTRYOGEX. Fahlun, study of form and composition, Hockauf, Zs. Kr., xii, 240. 

 BuTRYOLiTK. Areudal, optical properties, Lacroix, Bull. Soc. Miu., viii, 433, 1885. 

 BouRNONiTE. Nagyag, analysis, Sipocz, Zs. Kr., xi, 218. 



Bra UNITE. Jakobsberg, Sweden, crystalsreferred to thetetartohedral-rhombohedral 

 system, Scliuster, Min. petr. Mitth., vii, 443. Occurrence and description, 

 Igelstrom, Bull. Soc Min., viii, 421, 1885. 

 Windgiillc, Switzerland, crystallographic note, Schmidt, Zs. Kr., xi, G03. 

 Breithauptite. Artificial crystals analyzed, Brand, Zs. Kr., xii 234. 

 Bhewsterlixite. In topaz, Nordenskiijld, Jb. Min., i, 242. 

 Bromlite. Composition and relation to barytocalcite discussed, with analysis, 



Becker, Zs. Kr., xii, 222. 

 Brookite. Magnet Cove, Arkansas, crystalline form described, S. L. Peufiehl, Am. 



J. Sc, XXXI, 387 ; E. S. Dana, id., xxxii, 314. 

 Bruiaciute. Loch Bruithaich, analysis. Macadam, Miu. Mag., vii, 42. 

 Calamine. Alteuberg, crystal described, Cesilro, Bull. Soc Min., ix, 242. 

 Calcite. Blatou, Belgium, crystals described, Sansoui, Bull. Acad. Roy. Belg. [3]. 

 IX, and Zs. Kr., xi, 352. 

 Belgium, description of crystals, Cesaro, Anu. Soc. Belg., Mem., xiii, 14 ; Roy. 



Acad. Belg. ,M6moires couronndes, xxxviii. 

 Andreasberg, crystals described, Thlirling, Jb. Min., Beil.-Bd., iv, 327. 

 Kotterbach, Hungary, crystals examined, A. Schmidt, Zs. Kr., xii, 109. 

 Rbombohedral cleavage discussed,*Cesaro, Bull. Soc. Min., ix, 281. 

 Var. Iceland spar, reflection of light as affected by polish of surface. Spurge, 

 Proc. Roy. Soc, London, XLi, 463. Polarization of light reflected from surface 

 of crystals, Conroy, Proc. Roy. Soc, London, XL, 173. 

 Couzon, Rhone, phenomena of corrosion, Gonnard, C. R., Jan. 31. 

 Experiments on elasticity, Vater, Zs. Kr., xi, 577. 

 Etching figures, Ebner, Ber. Ak. Wien, xci, 760, 1885. 

 Pseudomorphs after aragonite, described, Bauer, Jb. Min., 1886, i, 62. 

 Caledonite. Sardinia, occurreuce at the Malacalzetta mine, Lovisato, Att. Accad. 



Line. [4], 11,257. Crystals described, vom Rath, Ber. uied. Ges. Bonn. Feb. 8. 

 Caxcrixite. Litchfield, Maine, analy.ses, F. W. Clarke, Am. J. Sc, xxxi, 263. 



