Grammelogia, or, The mathematicall ring extracted from the logarythmes, and projected circular : now published in th[e] inlargement thereof unto any magnitude fit for use, shewing any reasonable capacity that hath not arithmeticke, how to resolve and worke, all ordinary operations of arithmeticke : and those that are most difficult with greatest facilitie, the extract on of rootes, the valuation of leases, &c. the measuring of plaines and solids, with the resolution of plaine and sphericall triangles applied to the practicall parts of geometrie, horo[l]ogographic, geographie, fortification, navigation, astronomie, &c, and that onely by an ocular inspection, and a circular motion / invented an[d] first published, by R. Delamain, teacher, and student of the mathematicks.

The same to the inventer of the Logarythmes projected in Circles.

None e're in Circles found an End they say, Or saw Beginning where abouts it lay: How was there then by thee beginning found, Of that which in it selfe is perfect round? And yet (onely to prove the saying true) Some doe deny it was found out by you: So will have no beginning; If their owne, The ancient Axiome still is overthrowne; But if it were not thine, how durst thou say Thou wouldst augment the same another day? Which day is come, and now that's decuplate, Which single was before. Thus tis thy Fate, Still to encrease thine error, and of one Make ten, to shew thy good Invention: Looke to't, if one has bred so much adoe, Tis ten to one, this will bee challeng'd too. Well, guiltie be thou first of this lawes breach, And for thy fault this censure shall thee teach, That though Beginning thou to this didst lend, Yet of it's copious use thou's ne're find End.