PHYSIOGRAPHY. CLASS II, 



mains found in gypsum, those of extinct species of terres- 

 trial quadrupeds in the Montmartre near Paris, are the 

 most remarkable. 



4. The prismatoidal Gypsum-haloide occurs in a great 

 many countries. It is found in various modifications, both 

 crystallised and massive, in different parts of Germany, 

 particularly in Mansfeld, Thuringia, Bavaria, Franconia, 

 Suabia, in the neighbourhood of Liineburg, in Switzerland, 

 in the Tyrol, in Stiria and Austria ; also in Poland, Hun- 

 gary, and Transylvania ; in England, France, Spain, &c. 

 Beautiful crystals are met with near Oxford, at Bex in 

 Switzerland, at Hall in the Tyrol, in several places in 

 Upper Austria, Stiria, Salzburg, and Sicily, &c. ; large 

 lenticular crystals, generally twins, and the scaly varieties, 

 are known from Montmartre near Paris ; the earthy ones 

 from Saxony and Thuringia. 



5. This species is variously employed in manufacturing 

 artificial marble, stucco work, mortar, &c. ; also for making 

 casts of statues, medals, &c. It is added to the mass of 

 certain kinds of porcelain and glass. In sculpture it is 

 used under the name of Alabaster. It is also used in agri- 

 culture, for improving the soil, both calcined and in its 

 natural state ; it forms the paste of coloured drawing pen- 

 cils ; it is employed in polishing, &c. 



2. PRISMATIC GYPSUM-HALOIDE. 



Prismatic Gypsum, or Anhydrite. JAM. Syst. Vol. II. 

 p. 605. Man. p. 25. Anhydrous Gypsum. Anhydrite. 

 PHILL. 172. Muriazit. WERN. Hoffm. H. B. III. 

 1. S. 123. Karstenit. HAUSM. III. S. 881. Wasser- 

 freier schwefelsaurer Kalk. LEONH. S. 546. Chaux sul- 

 fatee anhydre. HAUY. Traite', T. IV. p. 348. Chaux 

 anhydro-sulfatee. Tabl. comp. p. 10. Traite', 2de Ed. 

 T. I. p. 562. 



BOURNON on Bardiglione. Trans, of the Geol. Soc. 

 Vol. I. p. 355. 



Fundamental form. Scalene four-sided pyramid. 

 P = 121 32', 108 35', 99 T. Vol. I. Fig. 9. 

 HAUY. 



