The ground of arts : teaching the perfect worke and practise of arithmeticke, both in whole numbers and fractions, after a more easie and exact forme then in former time hath beene set forth: made by M. Robert Record D. in Physick. Afterward, augmented by Mr. Iohn Dee. And since enlarged with a third part of rules of practise, abridged into a briefer method then hitherto hath been published, with diuers necessary rules incident to the trade of merchandise: with tables of the valuation of all coynes, as they are currant at this present time: by Iohn Mellis. And now diligently perused, corrected, illustrated and enlarged; with an appendix of figurate numbers ... with tables of board and timber measure; and new tables of interest vpon interest ... with the true value of annuities to be bought or sold present, respited, or in reuersion: the first calculated by R.C. but corrected, and the latter diligently calculated by Robert Hartwell, philomathemat.