222 



MINERALOGY. 



[In preparing abstracts of mineralogical papers it has been thought right to 

 adhere as far as possible to whatever system of nomenclature, chemical notation, 

 and crystallographic formula; may have been used by the authors. No attempt 

 has therefore been made to secure uniformity on these points. Where two or more 

 symbolical expressions for the same thing have been used, the first has generally 

 been taken. In some cases exceptions to the foregoing rules have been made to 

 avoid typographical difficulties.] 



Achiardi, Prof. A. d'. Su di alcuni Mineral! Toscani. Brevi N'otizie. 

 [Tuscan Minerals.] Atti Soc. Tosc. Sci. Nat. vol. ii. pp. 112-118. 



Describes Guadalcazarite of Levigliani, pyrrhotine and Meneghinite 

 of Bottino, and haematite of Borghetto, giving analyses of the last two 

 by Martin and Funaro, and quoting others of nos. 1 and 3. W. H. D. 



[Tin-ore in Tuscany.] N. Jahrh. Heft iii. p. 286. 



Note on the discovery of cassiterite, with brown iron-ore, in the 

 Cento Camerelle, where the Romans, and perhaps the Etruscans, had 

 important mines. The tin-stone contains 72-45 p. c. of tin. P. W. E. 



[Tuscan Minerals.] N. Jahrh. Heft v. pp. 636, 637. 



Records the discovery of fine crystals of magnetic pyrites at tho 

 Bottino Mine, near Seravezza, and of a mineral which appears to be a 

 variety of Guadalcazarite from the quicksilver mine of Levigliani. Tho 

 new mineral differs, however, from typical Guadalcazarite in containing 

 no selenium, and in being richer in zinc and iron. If it should prove 

 on quantitative analysis (for which not sufficient has yet been obtained) 

 to be a new species, it is to be termed Levicjlianite. F. W. B. 



Anon. Descriptive Catalogue of a collection of the Economic Mine- 

 rals of Canada. Pp. 152. 8vo. Montreal. 



A catalogue, with full descriptive notes, of a large collection of 

 minerals exhibited in the Philadelphia International Exhibition. It 

 follows Logan's classification of tho Canadian minerals exhibited in 

 London in 1862. Mr. Selwyn contributes notes on stratigraphical 

 geology in illustration of a collection of rocks and fossils. P. W. II. 



. A Tin Mine in Tuscany. Journ. App. Sci. vol. vii. p. 5Q. 



Note of the discovery of cassiterite in Lias near Campiglia. 



. Carbonado. Ibid. p. 60. 



Note of the finding in Brazil of black carbon as hard as diamond. 



Archbold, Dr. — . On the formation of Plint. NonvicU Geol, Soc. ; 



reprinted from the Norwich Arr/us, March II. 

 Gives analyses of four specimens of flint. 



