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^ITH THE THEORY OF DRAINING MORASSES, 



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IMPBOFED CONSTRUCTION- OF THE DRILL PLOUGH. 



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By ERASMUS DARWIN, 



M.D.F,R.S 



AUTHOR OF ZOONOMIA, AND OF THE BOTANIC GARDEN. 



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Buadent hsec Creatoris leges a fimplicibus ad compofita. 



Lin. Ord. Nat 







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LONDON: 



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PRINTED FOR J. JOHNSON, ^T. PAUL S GHURCH»YARD> 



BY T. BBWSLEY; BOtT COURT, FLEET STREET* 



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