XXil 
CONTENTS. 
MinEeraLocy—( Continued.) 
2. Native metals, ; 
3. Tellurids, 5 , 
4, Antimonids, . 4 
5. Arsenids, 
6. Selenids, 
7. Sulphurids or da dawets: 
8. Oxydes, : 
9. Silicates, 
10. Salts, . : 
Economical Uses of Minerals, : 
GEOLOGY, : : 
I. General Petrogr ck, : ° 
II. Special Petrography, . : 
A, Isonomic rocks, . 
1. Silicious rocks, ; 
2. Micaceous rocks, ie 
3. Feldspathic rocks, ‘ 
4, Pyroxene rocks, ° 
5. Rocks of Schiller spar, . 
6. Serpentine rocks, 
7. Amphibolic rocks, 
8. Calcareous rocks, 
9. Magnesian limestone, . 
10. Gypsum rocks, 
B. Heteronomic rocks, : 
a. Conglutinates, 
6. Congregates, . 
HI. General Oreography, 
iT. ; : 
. Combinations of saat ati sti mountainous rabens anil ranges, 
. Valleys, 
. Plains, 
. The interior of sot eciatitn 
. Cleavage of rocks, 
. Stratification, ‘ 
. Arrangements of strata, : 
. Relation of stratification to mountain masses, 
. Accidental separation of rocks, . 
» BER, . 
. Order of succession ee relatifs age of ele = 
. Formations, groups, and systems, 
. Subordinate strata, 
. Veins, 
. Theory of veins, 
COomawrgnnrf w bv 
Mountains, 
17. Fossil organic remains, their iSladond to the existing organic 
world, and their significance in a geological point of view, 
18. Occurrence of fossil remains, . : ‘ : 
