MINERALOGY. 469 



Ralstonite. Greenland, analysis and discussion of composition, S. L. Penfleld and 



D. N. Harper, Ain. J, Sc.', xxxii, 380. 

 Rhodonite. Pajsberg and Langban, Sweden, crystallograpbic monograph, G. Flink, 



Zs. Kr., XI, 506. 

 RiCHELLiTE. Produced artificially, Cesaro, Ann. Soc. Geol. Belg., M6m., xiii, 21. 

 RiTTiXGERiTE. Chemical examination, Streng, Jb. Min., i, 57. 

 RuTiLE. Crystallograpbic observations, Doelter, Jb. Min., i, 147. 



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



Bonn, February 8. 

 'Secondary twinning, Miigge, Jb. Min., I, 147. 



Crystallograpbic description of a mineral from North Carolina, having appar- 

 ently the eauie composition and related, though distinct in form, Des Cloizeanx, 



Bull. Soc. Min., ix, 184. 

 Samaeskite. Spectroscopic examination of rare elements, Crookes, Proc. Roy. Soc, 



XL, 236 ; XLi, 502. 

 SCAPOLITE. Discussion of the chemical relations of the group, Tschermak, Min. petr. 



Mitth., VII, 400. 

 SCHEELITE. Tyrol, crystals described, v. Zepharovich, Lotos, 1885. 



Saint-Lary, Pyrenees, occurrence, Januettaz and Goguel, Bull. Soc. Min., ix, 39. 

 ScHEFEERiTE. Laugbau and Pajsberg, Sweden, crystallograpbic and chemical de- 

 scription, G. Flink, Zs. Kr., xi, 487. 

 SCHORLOMITE. Magnet Cove, relation to garnet discussed, Kcenig, Proc. Acad. Nat. 



Sc. Philad., 355. 

 SCHUNGITE. A form of amorphous carbon, luostrauzeft', Jb. Min., i, 92. 

 ScoLEZiTE. Optical examination, Schmidt, Zs. Kr., xi, 587 ; Wyrouboff, Bull. Soc. 



Min., IX, 266. 

 Semseyite. Felsobiiuya, analysis, Sipocz, Zs. Kr., xi, 216. 

 Serpentine. Franklin, New Jersey, containing manganese and zinc, Kceing, Proc. 



Acad. Nat. Sc. Philad., 350. 

 Chemical examination, Wartha, Zs. Kr., xi, 266. 

 Smaltite. Microscopical structure investigated, Baumhauer, Zs. Kr., xii, 18. 

 Smithsonite. Siberia, a supposed orthorhombic variety, Griffiths and Dreyfus, Chem. 



News, Liv, 67. 

 Sodalite. Litchfield, Maine, analysis, F. W. Clarke, Am. J. Sc, xxxi, 264. 

 Sphalerite. Spain, index of refraction measured, Ramsay, Zs. Kr., xii, 218. 



Hungary, analyses, Sipocz, Zs. Kr., xi, 216, 217. 

 Spinel. New related mineral in phouolite of Olbriick, K. de Kroustchofl", Bull. Soc. 



Min., IX, 85. 

 Spodumene. Alexander County, North Carolina, var. hiddenite, occurrence described, 



W. E. Hidden, Am. J. Sc, xxxii, 204, 483. Crystals with new planes measured, 



vom Rath, Ber. nied. Ges. Bonn, February 8. 

 Stepiianite. Exhaustive crystallograpbic monograph, with many figures, Vrba, Ber. 



bohm. Ges., 119. 

 SriBNiTE. Japan, crystals showing curvature, L. Bombicci, Ace Sc. Bologna, Janu- 

 ary 24. 

 Stilbite. Crystallograpbic and chemical relations discussed, Langemanu, Jb. Min., 



II, 126. 

 Stromeyerite. Mexico, analysis, Kcenig, Proc. Acad. Nat. Sc. Philad., 281. 

 Stuvenite. Chili, new variety of alum, Darapsky, Verb. wiss. Ver. Santiago, 3, 105. 

 Sulphur. Rabbit Hollow, Nevada, crystals described, E. S. Dana, Am. J. Sc, xxxii, 



389. 

 Dispersive power determined, Schrauf, Wied. Ann., xxvii, 300, 

 Svanbergite. Horrsjoberg, Sweden, occurrence, Igelstriim, Geol. For. Forh.. viii, 



176. 

 Sylvanite. Offenbtinya, analysis, Sipocz, Zs. Kr., xi, 210. 

 Sylvite. Molecular structure investigated, Brauns, Jb. Min., i, 224. 



