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Three letters on mining and smelting : in which a method is laid down, whereby these useful sciences may be greatly improved; to which is added, a fourth letter; setting forth, a discovery of an easy method to secure ships bottoms from worms / by Diederick Wessel Linden
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thargy ; then would they demand a re-gular Practice; then would they insist uponsuch rational Proceedings as this Sciencecan clearly evince it is capable of pointing1 out: It was for this Reason that I was sosanguine in my Letter wrote to Mr. Hoof onon this Subject; it was he, and others atthat Time, who provoked me to use suchaustere Expressions; for, by denying andrejecting the most essential Truths, hetended rather to oppose this Science thenimprove it: This the Searcher of all Heartsknows was the Cause that forced them fromme therefore I can but think myself ill-used by some, who, I have heard, have' put other false Constructions upon them.

The Impostor can shelter himself nootherways than under some scattered Truthsof this Science; he scarcely presumes orattempts to discover any other Knowledgethat he is possessed of; he rarely offers toutter any of its Fundamentals ; and, whenhe does pretend to have any Acquaintancewith them, he gives at most but some bareHints, and meddles with nothing but itsOut-lines; yet, with this precarious Know-ledge, helped off with some plausible Elo-cution, and lair Promises of Advantage,does he prevail among the unwary and un-acquainted : With these Pretences does heinsinuate himself into the Favour and goodGraces of the Credulous and Avaricious;

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