MINKKALOGr. 249 



Laspejrres, H. Ueber die KrystalUbrm des Antimons. [Crystalliza- 

 tion of Antimony.] Zeitsch. deutsch. <jeol. Ges. Bd. xxvii. Heft iii. 

 pp. 574-022, ^^-ith plate and 5 woodcuts. 

 Contains chapters on the occurrence of crystals of antimony ; the 

 history of our knowledge of its crystallography ; a detailed account of 

 the crystals accidentally produced from hard lead at Stolberg ; discussion 

 of the crystallographie constants of antimony ; on its cleavage ; and 

 enunciation of a new law of twinning. F. W. R. 



Lecoq de Boisbaudran, — . Caracteres chimiques et spectrosco- 

 piques d'un nouveau metal, le Gallium, decouvert dans un blende de 

 la mine de Pierrefitte, vallee d'Argeles. [Chemical and spectroscopic 

 characters of a new metal, Gallium, found in a blende from the Pierre- 

 fitte mine in the Argeles valley.] Compt. liend. t. Ixxxi. pp.493-495. 

 Spectroscopic examination of zinc-blende from the Pierrefitte mine, 

 valley of Argeles, Pyrenees, showed that this mineral contained a new 

 element, and thus led to the discovery of the metal Gallium. E. W. R. 

 Lecovec, — . Echantillons de Quartz hyalin de Huelgoet (Finistere). 

 [Specimens of Vitreous Quartz from Huelgoet.] Bull. Soc. Linn, 

 Norm. ser. 2, t. viii. p. 341. 

 Leeds, Prof. Albert R. Mineralogical Note. A magnesia-iron 

 Tremolite, not asbestiform, from the soapstone quarry above Mana- 

 yunk, Pa. Amer. Journ. ser. 3, vol. ix. pp. 229, 230. 

 " The mineral is the Anthopliyllite^ so-called, given in the list of 

 American localities on page 780 of Dana's Mineralogy, 5th edition." 

 2 analyses, with mean, are given. G. A. L. 



Lill, M. von. Analysen ausgefiihrt im Laboratorium des k.-k. 

 General- Probiramtes in Wien in den Jahren 1874 und 1875. 

 Zusammengestellt von M. v. Lill. Berg. Hiitt. Jahrh. Bd. xxiii. 

 pp. 352-367. 

 Part I. Contains analyses of Alpine iron-ores and ores of lead, 

 copper, and manganese ; II. On artificial products ; III. Gives analyse-s 

 of rock-salt ; IV. Limestone ; V. Graphite ; VI. Peat, coal, and coke. 

 Most of the samples were from Styria, Hungary, Transylvania, or 

 Bohemia. F. W. R. 



Limur, Comte de. Le Jade Oceanien en gisemenfc dans la Baio de 

 Roguedas prc-s Vannes (Morbihan). [Oceanic Jade in place in the 

 Morbihan.] Extrait du Rapport fait au Congres pour I'A van ce- 

 ment des Sciences Fran^aises, Sess. 1875. 



. Quelques Recherches auChalumeau pour essayer de reconnaitre 



les substances ])lus ou moins tenaces .... &c et etude et 



description du filon de la baie de Roguedas (Morbihan). [Blow- 

 pipe Investigations to discover a Test for Tenacious Substances. 

 Account of Lode, Roguedas Bay.] 

 Lindstrbm, G. Undersokning af magnetkisens sammansaltning. 

 [On the Composition of Magnetic Pyrites.] (Efvers, K, Svenska 

 Vtt.-Akad. Forhandl 1875, No. 2. 

 Chemical analyses of magnetic pyrites from six localities (Uto, 



