322 MINERALOGY. 



Mellite or Honeystoae, this is a rare Mineral, its sub- 

 stance is softer than Amber, is brittle, transparent, and pos- 

 sesses the double refraction ; burning without any percep- 

 tible smoke or flame, and its residuum acquires the colour 

 and consistence of Chalk. 



We have now briefly enumerated the bases of the varioui 

 Mineral productions ; it would far exceed our limits to enu- 

 merate the varieties into which they run, or the combinations 

 under which they are found, these will be found described 

 in aa easy, intelligent manner in * Phillips's Introduction 

 to Mineralogy.' Earths are generally infusible, and are those 

 substances which form the exterior surface of the globe, 

 and require no particular care either to procure or 

 preserve in their native state ; merely noting under what 

 circumstances they are found, whether in strata, or confused 

 masses, if they appear to be deposites from rivers or other 

 "waters ; what substances occur above or beneath, and any 

 peculiar properly they may appear to possess locally. 

 Metals are generally found in hilly or mountainous coun- 

 tries, but rarely in a pure state, the ores should be carefully 

 collected, and each piece wrapped in paper, to prevent attri- 

 tion, the situation under which the various substances may 

 be procured, should be particularly noticed, as also the uses 

 to which they are applied by the natives of the country, 

 these same particulars should be observed with regard to all 

 rocks, stones, clays, or other earthy or Mineral substances ; 

 it will be of considerable service to the science if persons 

 visiting foreign parts, would take the trouble to collect 

 pieces of such rocks or stones as possess any property or 

 appearance peculiar to themselves, likewise specimens of 



