| Molybdena. | 2. Osmium. | | 2. Pyrochlore. | | | | | | | | | | | | _F. 5. Salt-Inflammables._ | _F. 5. Salt-Metals._ | | 1. Copper-glance. | 1. Copper. | | | 2. Gray-copper. | | | | | | | | _F. 6. Inflammable |_F. 6. Inflammable-Metals._| | -Inflammables._ | | | 1. Nickel-glance. | 1. Nickel. | | 2. Cobalt-glance. | 2. Cobalt. | | | | | | | | | | | | | | _F. 7. Ore-Inflammables._ | _F. 7. Ore-Metals._ | | 1. Sulphur-Platinum. | 1. Rhodium. | | | 2. Iridium | | | 3. Palladium. | | | 4. Platinum. | | | | | _F. 8. Water-Inflammables._| _F. 8. Water-Metals._ | | 1. Antimonial | 1. Antimony. | | Nickel | 2. Tin. | | 2. Gray Antimony | 3. Lead. | | 3. Galena. | | | | | | _F. 9. Air-Inflammables._ | _F. 9. Air-Metals._ | | 1. Acicular Bismuth. | 1. Zinc. | | 2. Bismuth-glance. | 2. Cadmium. | | 3. Arsenical Pyrites. | 3. Bismuth. | | | 4. Arsenic. | | _F. 10. Fire-Inflammables._| _F. 10. Fire-Metals._ | | 1. Foliated Tellurium. | 1. Tellurium. | | 2. Silver-glance. | 2. Mercury. | | | 3. Silver. | | | 4. Gold. | | | | II.--_GEOLOGY_. 545. Geology is the history of the formation of the planet. It is the doctrine which comprises the structure and thus the form, with the organs or members of the planet, if we would compare the latter with an organic body. 1. _Form of the Planet._