Methodus figurarum lineis rectis et curvis comprehensarum quadraturas determinandi
A 1685 London mathematics treatise by John Craig on determining quadratures of figures bounded by straight and curved lines, printed for Moses Pitt. The single picture is a bookplate of George Kenyon of Peel, Esq., showing a heraldic shield with three crosses and a crest of a lion within rococo scrollwork and a banner reading 'Magnanimiter Crucem Sustine'. A designer might take the symmetrical shield framed by ornate acanthus and scroll ornament as a model for heraldic or armorial emblem work.
