PAGE 13 ERRAT A. AGE 138. Line 8. for Heveling, Read Hevelius. p. 138. The Defcription relates to Fig. XXXVII, Plate XII. p. 244. 1. 14. for Phifiological, r. Phyfiological. p. 302. 1. 1. erafe Fig. LIII, and r. LII. N. B. If the Reader meets with any other Miftakes (which are very few) he is defired candidly to excufe, and correc them as he goes along. BOOKS wrote by Mr. BENJAMIN MARTIN. In the Prefs, New compleat and univerfal Syftem, or Body of decimal Arithmetick: Containing, 1. The whole Doctrine of decimal Numbers, not only the plain and terminate, but alfo fuch as repeat or circulate ad Infinitum; and a plain but perfect Management of both, laid down and explain'd in all the fundamental Rules of plain Arithmetick, and by Logarithms. II. The Application and Ufe of decimal Arithmetick in all the Parts or Branches of arithmetical Science, viz. Vulgar Arithmetick, vulgar Fractions, duodecimal, and fexagefimál Arithmetick; alfo in Algebra and Logarithms. In all which its Excellency, and abfolute Neceflity is fully evinced. III. Its Application and Ufe, in all fuck Parts of the Mathematicks as abfolutely require its Affittance, viz. Plain Trigonometry, and the Arts depending thereon; as Navigation, Fortification, Altimetry and Longimetry; alfo the Meafuration of all Kinds of Superficies and folid Bodies; and the Arts refulting therefrom, as Guaging, Surveying, &c. IV. A new and compleat Set of decimal Tables never before published, fhewing by Infpection the Value of all Kinds of Decimals (without the tedious Methods of Reductions hitherto ufed) to four or fix Places of Figures; alfo all the common Tables very much enlarged, corrected and improv'd; wherein all the circulating Numbers are mark'd; with all other Tables of Intereft, Annuities, Exchange, &c. Neceffary to render the Work compleat. V. An exact and accurate Canon of Loarithms for natural Numbers; and through the Whole, feveral Things new and ufeful, not here exprefs'd. 2. Juft going to the Prefs, The young Student's Memorial Book, or Pocket Library, &c. 3. Some other Mathematical Performances are in the Prefs, and will be Difpatch'd with all convenient Speed. D |