Benjamin Robins responded to the criticisms of Isaac Newton's Method of Fluxions contained in George Berkeley's Analyst with a pamphlet entitled A Discourse concerning the Nature and Certainty of Sir Isaac Newton's Methods of Fluxions, and of Prime and Ultimate Ratios, published in 1735.
This Discourse is available here in a variety of formats (PDF and PostScript for viewing and printing, together with source in the form of input files for Plain TeX and METAPOST):
Robins's account of the foundations of Isaac Newton's methods differed in certain respects from that given by James Jurin (who wrote under the pseudonym of Philalethes Cantabrigiensis). This led to a lengthy controversy in the pages of The Present State of the Republick of Letters.
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D.R. Wilkins