90 /Scientijio Intelligence. 



})eculiar to them, witli a statement of the different types of syra- 

 wls in use. The work diifers from most books of similar scope 

 in that tlie triclinic system is introduced first, a method which 

 the author has found to give the best results with his pupils. 

 The figures are numerous and are all presented in a series of 

 iwenty-live plates printed on thin paper and placed at the end of 

 the volume. 



11. Brief Notices of some recently described Minerals. — Ano- 

 PHORITK is an alkaline amphibole described by W. Freudenberg 

 as occurring in the shonkinite of Katzenbuckel, Baden. It has 

 the pleochroisra of Brogger's cataphorite, but differs in chemical 

 composition and in optical orientation ; specific gravity, 3'166. 

 Analysis gave : 



SiOj 



TiO, 



AI2O3 



Fe^Os PeO 



MbO 



MgO 



CaO Na,0 K^O H,0 



49-79 



5-37 



1'98 



7-54 9-18 



0-36 



11-59 



3-16 7-92 1-85 1-52 

 = 100-26 



— Ref. in Jahrh. 3iin., i, 34, 1910. 



BiTYiTE is a hydrated silicate of calcium and aluminium 

 described by A. Lacroix from the pegmatite veins of Mt. Bity, 

 Maharitra, Madagascar. It occurs in minute hexagonal (pseudo- 

 hexagonal) plates of a yellowish-white color ; hardness, 5-5 ; 

 specific gravity, 3*05. An analysis by Pisani gave : 



SiOs AI2O3 CaO BeO MgO Li,0 Na^O K^O HjO 

 31-95 41-75 14-30 227 013 2-73 0-40 0-16 6-50 =100-19 



— Bull. Soc. Min., xxxi, 241, 1908. 



Brtjgnatellite is a hydrate and carbonate of ferric iron and 

 magnesium, described by E. Artini, from Val Malenco, where it 

 occurs in a serpentized peridotite. It forms lamellar aggregates of 

 micaceous aspect, easy cleavage, pearly luster and flesh-red color. 

 An analysis gave : 



CO3 FesOa MgO MnO H2O insol. 



7-78 13-20 42-79 1-80 33-77 1-03 =100-37 



From this the formula is calculated : 



MgC03.5Mg(OH),.Fe(OH),.4H,0. 



Named after Professor L. Brugnatelli of Pavia. — JRivista Min. 

 Ital, xxxvii, 119, 1909. 



Hallerite is a silver-white mica with pearly luster described 

 by Ph. Barbier, from the pegmatite of Mesvres, Autunois. It is 

 near paragonite, yielding 7"63 p.c. Na^O and 1-26 Li^O. Named 

 after Professor Haller of Paris.— C. R., cxlvi, 1220, 1908. 



JoAQUiNiTE is a rare titano-silicate of calcium and iron described 

 by G. D. Louderback in a recent pamphlet which gives an exhaus- 

 tive account of the remarkable barium titano-silicate benitoite. 

 It occurs in small, honey-yellow or light brown crystals, enclosed 

 in both natrolite and neptunite ; the crystals are imperfect in 

 form, but are referred with probability to the orthorhombic sys- 



