240 MINERALOGY. 



Ross, Major W. A. Blowpipe-analysis of the new mineral Hen- 



woodite. Chem. News, vol. xxxiv. no 881, pp. 156, 157. 

 Describes the blowpipe-characters exhibited by the mineral when 

 examined according to the author's method. 



. Pyrology. — Quantitative Analyses by the Blowpipe. Nat are, 



vol. xiv. pp. 130, 131. 



Roster, Dr. G. Note mineralogiche su I'lsola d'Elba. [Minera- 

 logical Notes on Elba.] Boll. R. Com. geol. Ital. vol. vii. pp. 297- 

 323, 410-437 ; 6 woodcuts. 

 The material for these notes is taken chiefly from the Foresi collec- 

 tion at Porto Ferraio, which contains over 400 finely crystallized 

 examples of haematite, and others in proportion : those described from 

 the iron and augite rocks are, picroallumogene, blende, cerussite, 

 asbolite, orthoclase, blue vitriol, chrysocoUa. In the granite are 

 uranite, arsenical pyrites, magnetite, limonite, epidote, tourmaline. 

 In quartzites, vesuvian, leucopyrite. In serpentine rocks, thulite, 

 opal, giobertite. Of these picroallumogene is a n. sp. : its analysis 

 agrees with the formula 2MgS0^ Al^S'^O^^^ 28H20 ; crystallographic 

 system probably monoclinic ; occurs in radiately fibrous masses. 



E. B. T. 



Roth, J. Ueber die Wirkung verdiinnter Essigsaure auf dolomitische 

 Kalke. [Action of Dilute Acetic Acid on Dolomitic Limestone.] 

 Min. Mitth. Heft i. p. 69. 



Rutley, Frank. Mineralogy. Revised Edition (2nd). Pp. x, 214. 



8vo. London. 

 Some corrections and additions. See Notice of Ed. 1 in the Geo- 

 LooiGAL Recokd for 1874, p. 247. 



Sadebeck, A. Ueber die Krystallisation des Diamanten. [Crys- 

 tallization of Diamonds.] Monatsh. Ic. preuss. Ah. Wiss. pp. 578- 



587. 



Sandberger, F. [Minerals from Bavaria.] N. Jahrh. Heft iii. pp. 

 280, 281. 



Announces the occurrence of a mineral in the Heubach, believed to 

 be Frenzel's Heterogenite., which is a hydrous proto-peroxide of cobalt ; 

 and of a mineral from the Reinerzau, supposed to be identical with the 

 same author's Chlorotile. Also notices the Mexican mineral Living- 

 stonite. F. W. R. 



. [Zinckenite.] N. Jahrh. Heft v. pp. 514, 515. 



Announces the occurrence of Zinckenite at the Ludwig Mine, near 

 Hausach, in the Black Forest, and gives analyses. 



