Mr Newton

SrSir

I received yours with Kinckhuysens Introduction, and perceive you have taken great paines which god willing shall be inserted into yethe Translation and printed with it, hereby you have much obliged the young Students of Algebra and the Bookseller who was at yethe commencemtcommencement on Munday and Tuesday but was so taken up and concerned you were so too that he did not see you, but remaines your Debt much obliged DrDebtor where of Will som, I formerly intimated that I thought he Kinck had too slightly handled the doctrine of Surd Numbers, and that the same might be transcribed from others I find you in the same opinion for in one of your Marginall Notes you say thus, The Author having slipped over the Addition Substraction Multiplication and Division of all but quadratick Surds &c and * * and he acknowledgeth as much tantly by consequence himselfe referring the Reader to Wassenare Onwissen Wistconstenaer however he cheifely thereby intended yethe Cube rootes of Binomialls which you have supplyed being unwilling the young Student should be referred to other bookes which are scarce for the Doctrine of Surds I make bold will a little further presume and to therefore crave your iudgemtiudgement of what you thinke necessary to be taken either out of Scheubelius, Van Ceulen, or Humes which bookes I herewith send and having another Scheubelius you here, you need not returne that sent, wherewith be pleased to accept of another Libellus de Machina Aquatica There are two other Authors have excellently handled Surds, those are Frans van der Huyps in his Low Dutch Algebra and in 1654 and yethe Seiur d Taneur in french in his Tract of irrationall quantities and Commentaries on 10 Euclid at Paris in 1640.