CONTENTS. 
XXI 
CLASS III. COMBUSTIBLE MINERALS, NOT GASEOUS. 
1. Sulphur,. 181 
2. Bitumen,. 182 
3. Amber,. 185 
4. Graphite,. 186 
5. Anthracite,. 188 
6. Coal,. 190 
7. Lignite,...'.. 191 
8. Peat,.. 192 
CLASS IV. ALKALINE MINERALS. 
ORDER I. AMMONIA. 
Carbonate of Ammonia,. 195 
ORDER II. SODA. 
I. 
Glauber’s Salt, . . . . 
... 196 
3. Common Salt,.. 
198 
2. 
Natron,. 
. . 197 
4. Hydriodate of Soda, ........ 
200 
ORDER III. 
POTASH. 
1. 
Sulphate of Potash,. 
3. Muriate of Potash,. 
202 
2. 
Carbonate of Potash. 
. . 201 
4. Hydrobromate of Potash, .... 
202 
5. Alum, . 
CLASS V. ALKALINE-EARTHY MINERALS. 
ORDER I. 
BARYTA. 
Heavy Spar, . 
ORDER II. 
STRONTIA. 
1 . 
Celestine, .. 
2. Strontianite, .. 
212 
3. Barystrontianite, , 
ORDER III. LIME. 
1 . 
Carbonate of Lime, . 
5. Apatite, .. 
239 
2. 
Arragonite, . 
6. FluorSpar, ... 
243 
3. 
Gvpsum, . 
.. 237 
7. Muriate of T.ime . 
245 
4. 
Anhydrite, . 
8. Da'.holite, . 
246 
9. Pharmacolite,. 247 
ORDER IV. MAGNESIA. 
1. Brucite (Hydrate of Magnesia), 248 3. Epsom Salt,.. 251 
2. Carbonate of Magnesia,. 249 4. Magnesian Carbonate of Lime, 252 
5. Ilydrobromate of Magnesia, .. 256 
