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Ne plus ultra: or, a sure guide to youth in arithmetick, shewing how they may attain to a perfect knowledge of all the common parts of arithmetick, the single and double Rules of Three, direct and inverse, performed by one or two Operations; Fellowship single and double, with the Rule of Practice. Also concise and ready Ways for casting up Bills of Parcels, useful for Merchants in whole-sale Trade, or for Retailers. Together with an easie Rule for casting up Things sold by the Thousand, or bought by the Thousand, and retailed by the Hundred. Likewise simple Interest, so compendiously done, that all Persons in general may reap Benefit thereby, To which is added the method which bankers use for casting up interest by days. By Charles Douglas.

Douglas, Charles, writer on arithmetic.
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About this work


Edinburgh : printed by R. Fleming and Company, and sold by most booksellers in town, 1731.

Physical description

viii,152p. ; 4⁰.

Publications note

ESTC T127360

Reproduction note

Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. (Eighteenth century collections online). Available via the World Wide Web. Access limited by licensing agreements.


  • English

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