708 SCIENTIFIC EECORD FOR 1885 



Pyroxene. Var. dioyside, Nordmark, Sweden, crystallograpliic and o|)t ica] uxam- 



ination, Fliuk, Oefv. Ak. Stockli., xi>ii, No. 2, 29. 

 Crystal of diopside from Zerinatt, Streug, Jahrb. Min., 1885, i, 238. 

 Twin crystals in rocks, Fr. Ijecke, Min. petr. Mitth., Vll, 98. 

 Relation between optical characters and chemical composition, Doelter, .Tahrb. 



Min., 1885, i, 43. 

 Minute crystals in tachylyte, Kroustchoff, Bull. Soc. Min., viii, 85. 

 Augites from the Kaiserstuhlgebirge, analyses, A. Knop, Zs. Kr., X, 58. 

 Var. diallage in gabbro, analyses, etc., Svedmark, Geol. For. F(3rh., vii, 811. 

 Fusion experiments, Becker, Zs. Geol. Ges., xxxvii, 10. 



Quartz. Remarkable crystals from North Carolina, G. vom Rath, Zs. Kr., x, 156, 475. 

 Composite crystals from Albermarle County, Va., W. G. Brown, Am. J. Sc, xxx, 



191; O. W. Huntington, Proc. Amer. Acad, Sc, June 10, 1885. 

 Effect of pressure on rotatory power, Jaunettaz, Bull. Soc. Min. , vili, 168. 

 Variation of refractive indices with heat, Dufet, ib., 171. 



Rhodonite (Eisenrhodonite) from Wester Silfljerg, Sweden, analysis, Weibull. Min. 



l^etr. Mitth., vii, 117. 



Crystals described from Pajsberg and Langban, Sweden, G. Flink, Oefv. Ak. 

 Stockholm, xlii, 6, 159, June 10. 

 RiPiDOLiTE. Var clinochlore, Mussa Alp, composition, Jannasch, Jahrb. Min., i, 92. 

 RuTiLE. Binnenthal, crystallographic examination, Rinne, Jahrb. Min., 1885, ii,20. 



Occurrence in granite, M. von Miklucho-Maclay, Jahrb. Min., 1885, ii, 88. 



Safflokite. Analysis, and relation to smaltite, L. W. McCay, Am. J. Sc, xxix, 



369, 496. 

 Sarkinite. New manganese arseniate from Pajsberg, A. Sjogren, Geol. For. Fiirh., 



VII. 724. 



Scapolite. Composition of group discussed, Kammelsberg, Ber. Ak. Berlin, xxx, 



589. 

 ScoLEZiTE. Pyroelectricity described, C. Friedel and A. de Gramont, Bull. Soc. Min., 



VIII, 75. 



Serpentine. Var. chrysotile, Shipton, Canada, analysis, E. G. Smith, Am. J. Sc, 



XXIX, 32 ; do. Terrell, Bull. Soc. Chim., xliii, 217. 

 Penn., Keller, Am. Phil. Soc, Philad., Oct. 2. 

 Silfbergite. From Wester Silf berg, Sweden, analysis, Weibull, Min. petr. Mitth., 



VII, 115. 

 Silver. Found native in New Jersey, N. H. Darton, Am. J. Sc, xxx, 80. 

 Spinel. Etching figures, F. Becke, Min. petr. Mitth., vii, 224. 

 Spodiosite. Relation to wagnerite, A. Sjogren. Geol. For. Forh., vii, 666. 

 Spodumene. Black Hills, Dakota, occurrence of large crystals, W. P. Blake, Am. 



J. Sc, XXIX, 71. 

 Staurolite. Analysis, discussion of composition, W. Friedl, Zs. Kr., x, 366. 

 Stephanite. Description of a crystal from Mexico, G. vom Rath, Zs. Kr., x, 173. 

 Stilbite. Berks County, Pennsylvania, analysis, Davidson ; do,, Hoskinson and 



Brunner, Am. Ch. J., vi, 414. 

 Stilpnomelane. Antwerp, New York, analysis, Genth, Am. Phil. Soc Philad., Oct. 2. 

 Strontianite. Strontian, Argyllshire, Scotland, analysis. Macadam, Min. Mag., vi, 



173. 

 Strexgite. Artificially ])roduced, A. de Schulten, C. R., June 15. 

 fexRUViTE. Crystals from Homburg, Kalkowsky, Zs. Kr., xi, 1. 

 Svanbergite. Occurrence at Horrsjoberg, Sweden, Igelstrom, Bull. Soc. Min., viii, 



424. 

 Synadelphite . Full description, Hj. Sjogren, Zs. Kr., X, 143. 



