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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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To the Right Honourable the

Earl of HALIFAX.

My Lord,

Most humbly beg Leave tooffer to your Lordship threeLetters on. Mining andSmelting ; and a fourth, ofa new discovered Method of securingShips Bottoms against the TVorms :They were wrote,at first with an In-tention only , to serve a few Indivi-duals ; but, as I thought they mighttend to promote the publick Good,and, in Consequence, concerned theNation in general, Well knowinghow much your Lordjhip makes thenational Interest your own, I havepresumed, with the Authors Con-sent, to present them to you for yourPerusal; not doubting, should they

appear