INFLAMMABLES. 74- Bitumen. 
232 
Gagas. CompaS, deeji black, opake, of a conchoidal textur® 
Ihining internally, burning with a greenilh flame. 
Bitumen. foJid. natan?. Syfl. nut. xii. 3 />. 1 1 1. «. 8. 
Bitumen duriilimum. Vyall.Jvsi-t. p-\Q(s.n ']. 
Gaga,'. Fcgel. min. 327. Baum. min. l. J>. 34. 
Gagat. SchmeiJJer miner 1. p. 289. 
Jet. Kirnvanz.p 64. Tbemjon chan, i^. p. 12, 
Jet. Scmierby Brit. min. /. 51. Brand, fifs. Jig. 1 21. 
Found in various parts of Great-Britain, France, Spain, Germanp 
See. particularly on the coall oi' Lomseflcft in Suffolk, with im- 
preffions of Cornu Ammoni?, fometimes iu layers, butgenc' 
rally in kidney-Lrm maffeso!’ various fizes : colour full glofl/ 
black, glafl'y internally: texture ftriated, and conchoidal- 
when cold has no odour, but when heated emits an odouf 
rclembling that of afphalt : leadily inflames and lofcs during 
comhullion 14 grains in zo, leaving an earthy refiduum : 
thin pieces will float for a fliort time on the water: fpecifi® 
gravity 1,259. It is formed into buttons, beads, and othef 
tiinkcts: when heated or rubbed hard will attrafl ligb^ 
bodies. 
Ampeh'tes, Black, opake, brittle, does not ftain the fingers, burn® 
with a bright white flame like a candle. 
Bitumen humi. Sfft. nat. xii. 3. / l 10. k. 6 ? 
Bitumen terra ntineralis. Wall.Jyjl. 2 p. g6. «, 5. 
Bituminous wood, Bovey coal, Schmeiffir \, p. zc^x,. 
Cannel coal, Bovey coal. Kirnean 2. /i. 52. 
Cannel coal. 'Thomjon chan, 4. p. 12. 
1. Earthy internally. 
2. Compaft and glofly throughout. 
Found iu Lanc.njlsire, Ireland, and many parts of Europe, of d 
compaA flaty texture' and conchoidal fratlure : it kindle* 
eafily and leaves a ftony or footy refiduum ol a grey colour s 
it is lufceptible of a fine polifh, and like jet may be made into 
trinkets; fpecific gravity 1,232. to 1,426. 
Lithan- Opake, black, brittle, burning with a blackifh or gre/ 
thrax. fmoke and leaving black or grey aflies and cinders. 
Bitumen fhiltofum. ««/. xii. 3. 1 1 1 . 7. 
Bitumen lapideum. Wall. jji. 2. p 98. 6, 
Coal. Kirnxan miner. 2. p. 53, Schmeiffer i. p. 292, 
Common coal, Tbomfon chem. p. 14. 
Pit coal. Senuerby Brit . min. /«A48,49, 
1, Of a flaty texture. 
2. Of a rather conchoidal texture. 
