The compleat canonier: or, The gunners guide : Wherein are set forth exactly the chief grounds and principals of the whole art, in a very brief and compendious form, never by any set forth in the like nature before. With divers excellent conclusions, both arithmetical and geometrical belonging thereunto: as also sundry serviceable fire-works, both for sea and land service. A study delightfull and very usefull for men of the best quality, and imbrac'd by the greatest princes. Written by John Roberts of Weston near Bath, Gentleman, practitioner and professor in the art thereof.