246 MINERALOGY. 



geodes in the island of Elba.] Boll. K. Com. gool. Ital. pp. 237- 

 242, and N. Jahrb. Heft iii. pp. 516-520. 

 This mineral, named after its discoverer, Signer Foresi, was found 

 incrusting tourmaline and felspar in granite. It is nearest allied to 

 desmine ; its characters are : — Ehombic system, isomorphous with des- 

 mine. Sp. gray. 2*4. Contains 15 per cent, of water. Before the 

 blowpipe it swells, becomes opaque and fuses; dissolves with difficulty in 

 hydrochloric acid. Formula i—pa^O . |CaO . 2Alfi, . 6SiO, . 6H,0. 



E. B. T. 



Bath, G. vom. Wollastonit im Phonolith des Kaiserstuhl bei Frei- 

 burg im Breisgau. Graphit vom Korallenberge zwischen Endorf 

 und Eecklinghausen im obem Eohrthal, Westfalen. N. Jahrb. 

 Heft V. pp. 521, 522. 

 Records occurrence of wollastonite in the phonolite of the Kaiser- 

 stuhl, near Freiburg i. B., and of graphite in Middle Devonian lime- 

 stone in the valley of the Bohr, Westphalia. The graphite occurs in 

 fissures of the limestone, and in investment-pseudomorphs on crystals 

 of calcite. F. W. B. 



Beinwaeth, C. TJeber den Stein- und Kali-Salzbergbau bei Wes- 

 teregeln. [Mining for rock-salt and potash-salts near Westere- 

 gelr.] N. Jahrb. Heft \d. pp. 616-619. 

 Describes the deposits at "Westeregeln, which are similar to those at 

 Stassfurt, but contain a bed of glauherite, nearly 4 feet thick : poly- 

 halite and tachyhydrite are absent. An analysis of the carnaUite is 

 given. F. W. B. 



Beusch, F. E., and G. Yom Bath. TJeber farbenschillernde Quarze 

 vom Weisselberge bei Obernkirchen unweit St. Wendel. Pogg. 

 Ann. Jubelband, pp. 532-538, with part of a plate. 



Describes the peculiar play of colour exhibited by specimens. of 

 quartz from the melaphyre of the "Weisselberg, near St. Wendel. 



Beydellet, De. Sur la phosphorite de Belmez. Bull. Soc. Geol. 

 France, 3 ser. t. i. pp. 350-352, 4 figs. 



The author describes specimens of apatite from Belmez, in Spain, of 

 a stalactiform and mammillated kind, which he collected from pockets 

 in Carboniferous rocks. These specimens frequently enclose fragments 

 of encrinites from the country-rock. In all the workings the deposits 

 of apatite decrease downwards. The figures give plans and sections of 

 the chief localities mentioned. G. A. L. 



BiviERA, Marques de la. Estudio sobre las Turmalinas y descrip- 



cion de sus principales ^variedades. An. Soc. Espan. Hist. Nat. 



vol. iii. part 3. 



Describes the different varieties of tourmalines, and illustrates his 



paper with two plates representing specimens from his collection, and 



the polarizing-properties of this mineral. J. M'P. 



Bobert, Eug. Des stations celtiques au point de vue geologique. 



