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very extensive one, not adapted to theGenius of those, who chuse not to spendtheir whole Days in one Branch of Litera-ture ; I do admit, that there is no End ofmaking Collections of Fossils, and the su-preme Head is much to be admired, thathe has created such vast Variety ; howotherwise would our curious Successors beentertained in after Ages, if Limits andBoundaries were admitted ; but altho’ aMan’s Capacity may be employed, ad In-jinitum , yet a diligent Student will soonfurnish, himself, so that he may be able toappear with sufficient Applause in the Mi-neral Kingdom.

. Further it is to be observed, that all thatI have refer’d to the Scrutiny of the nakedEye, ought to be inspected by the Help ofmagnifying Glasles, and so for the firstPart, enough at present.

The second Part of Minerology consistsin examining those Fossils, by the Help ofChymistry, which we cannot obtain a per-sect Knowledge of, by their outward Cha-racteristicks, or by a bare Inspection : ThisExamination must be performed in such aManner, that the whole Body may be strictlysaid to be anatomized, by reducing it to itscomponent Parts or Elements, each Contentof the Mixture, or Compound must be pro-duced by itself, in its just Quantity, and dueQuality, taking care that nyne of its Prin-