Manuscrito - Arismetica Manuscript.- Arismetica.- 18th Century (1753-1782) .- [178] p .; 21 cm.- E. 18th C. calligraphed and painted manuscript, presenting the following structure: title page (Arismetica); 1 f. with the coat of arms of Portugal (painted); 76 p. with frames of rod reductions of various textiles; 6 p. with a summary and several instructions of accounts (of the Italian, the baker, the tavernman, the gentleman, the merchant and the sacristan); 1 f. with the Pythagoras Table (painted and signed Marçal J. the fes); 6 p. with notes on the Table; 1 f. with painted interlayer (Arismetica & c.); 2 p. with a novel (in verse); 1 p. with the title Taboada Curioza; 17 p. with tables and instructions on various types of commercial accounts (pieces of cloth and cereals); 1 f. of painted and dated interlayer face (1782 - The reduction of rods of certain genera and prices, & c.); 40 p. with price lists. The volume of fatigued full calf binding of the time with nineteenth century guards. Document slightly handled with some scratches (and scribbles) and occasional light stains but solid and fully readable.