Logarithmo Technia Sive Methodus Construendi Logarithmos Nova Accurata Facilis Scripto

by Nicolaus Mercator

$6,500 · Offered by Sophia Rare Books

First edition

London: William Godbid for Moses Pitt, 1668. First edition of the book that put the logarithmic series into print — the thirty-four pages in which Nicolaus Mercator divided 1 by 1 + a, wrote down the quotient 1 − a + aa − a3 + a4 and so on without end, summed it term by term to square the hyperbola, and recognised the area he had found as a logarithm —

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