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 Mr. Robert Record Dr. 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 beene 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 tables of board and timber measure; and new tables of interest vpon interest, after 10 and 8 per 100; 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.