Mathematical recreations: or, A collection of many problems extracted out of the ancient and modern philosophers: : as, secrets and experiments in arithmetick, geometry, cosmography, horologiography, astronomy, navigation, musick, opticks, architecture, statick, mechanicks, chymistry, water-works, fire-works, &c. Not vulgarly manifest till now. Written first in Greek and Latin, lately compil'd in French by Henry Van Etten, and now in English, with the examinations and augmentations of divers modern mathematicians. Whereunto is added, The description and use of the double horizontal dyal, and the general horological ring: invented and written by William Oughtred