i 
[ 1 
CLASS I. EARTHS. 
ORDER I. TALCOSE. 
I. Talcum. 
s; Serpentinus. 
3. Aseestus. 
4. Actinotus. 
5. Hornblenda. 
Greafy to the touch. 
Dry and harfli, of a fliivcry frafturc, with 
out luftre*. 
Dry, fibrous,' without luftre. 
Dry, fliining. 
Dry, lamellous, black. 
ORDER II. PONDEROUS. 
6 . Barytes. 
7. Crossopetra. 
8. Strontia. 
9. Sydneia. 
Soluble in boiling fiilphuric acid. 
Not totally foluble in fulphuric acki. 
Soluble in marine and diluted nitric acuis. 
Soluble in muriatic acid. 
ORDER III. CALCAREOUS. 
10. Creta. Soling the fingers. 
11. Tophus. Porous, precipitated from wafer. 
12. Spatum. Lamellar, breaking into rhomboidal frac- 
tures. 
. Undulate!)' flaty. 
Fibrous, foluble entirely with cffervefccnce 
’ in nitric acid. 
Precipitated from water in the air. 
Confining of globular granulations. 
Compadt or granular. 
Emitting an urinous fmell when fcraped. 
Radiate, partly foluble in nitric acid. 
Fibrous in a fiellate manner, calily melting 
in fire. 
Friable, becoming very pale when dry. 
Hardening by fire, and vitrifying in a greater 
degree of heat. 
Becoming black in the fire. 
Lamellar, brittle, llowly effervefein')- with 
acids. ° 
Calcinable with water, hardening in the air. 
Ig.SCHISTOSPATHUM 
14. Inolithus. 
15. Stalactites. 
16. PiSOLITHUS. 
17. Marmor. 
18. SuiLLUS. 
19. 1'remolites. 
20. Stellaris. 
21. Humus. 
52 Marga. 
23- Macnesiata. 
24. PlCROSPATUM. 
55. Gypsum. 
