Comes commercii, or The trader's-companion. [electronic resource] : Containing I. An exact and useful table, shewing the value of any quantity of goods or wares realy cast up, more adapted to merchants, use than any [c'lier] ex[am] which is demonit... example relating ... to buying and selling; with several new additions and improvments. II. A table calculated for universal use, which use is ...wn in the solution of questions, in multip...ation, division ...ction, merchantining, and measuring all kind of superficies and s..., or gauging ... and ... III. The manner of casting up dimensions in general, whether the same be taken in inches, feet and inches, ... &c. and how to give the answer by reduction, duo-decimals, or decimals, ... and .... IV. The several customs used by surveryors and measurer, ... wal...scor, painting, plaistering, ..., tyling, partitioning, brick, ... common rate of such work by the ..., y..., foot, &c. V. Instructions for entring goods at the customhouse, inward, outward, and by certificate; with several material clauses in such statutes as relate to exportation and importation. VI. Concerning water-side business, and the constitution of the keys, wharss, porters, &c. there also the charge of wharfage, lighterage, and portorage, for landing, loading, weighing, and housing goods, and what is usually paid for the use of the warehouse at the water-side. VII. Rules concerning freight, bills of lading, primage, and how the same is paid for. &c. VIII. Concerning insuring ships, merchandizes, and houses, and how to make rates and averages incase of loss; with the advantages of the practice of insuring in several instances, with respect to foreign and inland trade: and many other things never before made publick. To which is added, a supplement concerning simple and compound interest, with tables there of as three, three and a half, four, five, &c. per cent. and the use and manner of calculating the same; and to make up accompts of mortgages, where the mortgages has received rent, &c. The whole adapted to the use of merchants and traders, lawyers, surveyors, and measurers of building. &c. By Edward Hatton, .... The 7th edition, with large additions. Accurately revised, corrected, improved, and augmented, by W. Hume ....