24© INFLAMMABLES. 79. Sulphur. 



fguratum. Intimately combined with iron, with a metallic fplendour, 



of a gold-yellow colour and more or lefs rounded form. 

 Pyrites figuritus. ^yst, nat. xii, 3. /; 114, », 4. 

 Sulphur glohulof. concret. Wall. Jy/i^ 2, p,\2(), n. ^, 

 Sulphureous mundic. Schmeijfcr miner. 2. p, llli 

 Pyrites. Kirnvan mineral. 2. p, 75, 76; 

 Sulphuret of iroii. Thorn fan them. \. p. ^\, 

 Sulphurct of iron. Son-ierby Brit, min., t. lo\. 

 Found very commonly in mines and argillaceous marl, of a 

 more or lefs globular form, or hemifpherical, ovate, kidney- 

 form. ItalacJlitical, and ailuming various fanciful reprefen- 

 lion.s as cones, fiuit, mufhrooms, Ihrubs, &c. 



Marcastia Intimately combined with iron, with a metallic fplendour, 



of a vold-ycllow colour^ in the form of cryftals. 

 Pyrites crvliallinus. Sy/i. nat xii. 3. /. 113. n. 3. 

 Sulphur fjrma crylhillina. WalLfyst. 2, />. 131. x?. 6* 

 Pyrites. Kirnvan mineral. 2. p. 76. 

 Sulphur pyrites. SshmeiJJer mineral. 2. p. ill. 

 Sulphurct of iron. Thomjbn chem. 4. p. 51. 

 Sulphuret of iron. Sonverby Brit. min. t. 105. 



\. Pyramidal, with the pyramid 3-fided. 

 Tlie pyramid pcrfcfl. 



The pyramid with the margins truncate* • 

 Gmel.fyst. vat. 3. />. 447. /. 1./. 37. 



2. Cryllalliscd in cUbcs. 

 So'iverby Brit, mi ft. 1. tab' 29, 30. 

 G//iel fyfi. nat. 3. p 446. tab, I. /i 4^4 

 With the faces convex. 



With the faces flat. 



With the faces fmooth. 



With the faces llriate. 



Wiih the lines on all the faces, in the fame direflion. 



With the lines on the faces alternately longitudinal & traiifverfe. 



3. Cryllallized in capillary prifmsj which are more frequently 



difpoied in a ftellatc than a parallel manner* 

 The prifms 6 fided. 

 The prifms 8-fidcd. 

 The prifms 12-fided and perfeft. 



Cmel./yst. nat. 3. p-. 447. /. l-f^ 29* 30. Muf. Tefs.t. 1 2./. 3. 

 The prifms 12-fided, with fome of the angles truncate. 

 GmeL/yji. nat. 3. />■ 446. /. 1./. 21. 

 The prifms i2-fided, with moil of the angles truncate, 

 Gmel J'yihnat. 3. tab. I./. l8i 35. 

 Found very commonly among coils and fhiftofe rocks, and in 



mines: it was formerly cut and polifhed by lapidaries, and 



fliaped into buttons and other ornaments: fpeciiic gravity 



from 4, 1006.104,7491. Scxverby, 



