26 TERMINOLOGY. . 2.5. 



To the second belong the rektions of Composition, the Forms 

 of compound minerals, the mode of Junction of the indivi- 

 duals in these compositions, &c. these properties being 

 such as are only to be met with in compound minerals. 

 The third comprehends those in which the simple or com- 

 pound state of the mineral has no influence upon the con- 

 sideration of the properties ; as Colour, Lustre, Transparen- 

 cy in general, Hardness, Specific Gravity^ the Stale of Aggre- 

 gation, Taste, $c. 



Terminology includes, therefore, three Sections, within 

 which each of the above mentioned properties is considered 

 in a separate Chapter. 



