MINERALOGT. 255 



Rath, Prof. G. vom. Phosphate of Lime of Bamle, Norway. Amer. 



Journ. ser. 3, vol. x. pp. 235, 236. 

 It occurs in nearly horizontal beds, 2 to 6 feet thick, in crystalline 

 schists, and is associated with anorthite and enstatite. 



R[eadwin], T. A. Doubtful Minerals. Chem. News, vol. xxxi. 

 pp. 107-109, vol. xxxii. pp. 15-18. 



One letter on doubtful minerals, and on confusion in mineralogical 

 nomenclature. The other replying to Prof. Dana [p. 235] on minera- 

 logical nomenclature, and giving a list of " doubtful minerals requiring 

 extinction or further authentic description." F. W. R. 



Readwin,T.A. Crystallography. (7A^m.iV<?w;s,vol. xxxii. pp. 225,281. 

 Two notes, with crystallographic queries. 



Reydellet, De. Fosforita de Belmez, Provincia de Cordoba. Bol. 

 Com. Map, Geol. Espan. t. iii. pt. 3. Translated from Bull. Soc. 

 Geol. Fiance. See Geolosical Record for 1874, p. 246. 



Reynes, Dr. [On a Mineralogical Classification.] Bull. Soc. Sci. 

 Inclust. Marseille, t. ii. pp. 126-128. 



Proposes a classification based on chemical composition only, and 

 enlarges upon the advantages it possesses over so-called natural and 

 physical classifications. G. A. L. 



Reynolds, Prof. J. E. On a specimen of Mineral Borate from Tara- 

 paca, Peru. Journ. R. Geol. Soc. Ireland, ser. 2, vol. iv. pt. ii. 

 pp. 89, 90. 

 The specimen consists of a mixture of common salt, with a hydrous 

 calcium and sodium borate, which latter diff'ers from any similar com- 

 pound hitherto described. The analysis gives the formula : — 

 (Na^O, 2B.p3)-h(CaO, Bfi^) mfl. 



It appears therefore to be a new mineral, of a series of which Ulexite 

 would be the fourth term. E. T. H. 



Ross, William A. Pyrology, or Fire Chemistry ; a science interest- 

 ing to the general philosopher, and an art of infinite importance 

 to the chemist, mineralogist, metallurgist, geologist, agriculturist, 

 engineer (mining, civil, and military), &c. Pp. xxviii, 346 ; 

 woodcuts and coloured plates. 4to. London. 



Rossi, M. S. Sopra la stipa votiva di Bourbonne-les-Bains cenientata 

 da cristallizazioni metalliehe contemporanee ed illustrata dal Ch. 

 Prof. E. Daubree. 4to. Borne. [See Daubree, pp. 235, 236.] 



Rndler, P. W. Notes on specimens of Phosphorite from the De- 

 partment of the Lot, France. Proe. Geol. Assoc, vol. iv. no. 3, 

 pp. 164, 165. 



The Phosphorite occurs in nodular masses, having: a concentric ajfat<»- 



