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to the mechanical Part of Mining, whichit cannot be expected will come in voguehere, unless some one takes upon him toinstruct the Inhabitants, by particularDraughts,' in what Manner such Machinesare to be erected ; which being done, they 'would soon conceive, arid come into a trueNotion of them; by this Means, in ashort Time, a Number of Mine Uteri sitewould be introduced into Practice.

I’enthly, As a Mine Professor should atthe same time be. a Metallurgist, so he mustin course know the Nature of Iron andSteel, and be, consequently, capable of in-structing hte Smith how to make the Tools,which must be differently adapted to diffe-rent Kirids of Ground through which theyare to cut: Thus, for Instance, Tools -thatare tempered very hard with Step), are notsuitable : to Gravel, Earth, and soft Lime-stone but such are necessary, when it issquired to cut through Hardness; butafter whatever Manner they are temper’d,or of whatsoever Sort they are; it must beseen, that they are always kept in good ,Order; for bad Tools make waste andcause undean Work.

Eleventhly, Sometimes in the Pursuit ofMetals, we meet with such Things as we didpot expect, as Antimony, Zink or Spelter,Bismuth,and many other uses ulFossils,where-by the mineral Manufactory may be im-proved;