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Advertisements,
ARts and Sciences Mathematically Professed and taught by the Author John Holwell, Philomat. at his House on the East side of Spittle Fields, over against Dorset street, next door to a Gla∣ziers, (viz.) Arithmetick, Geometry, Gaging, Surveying of Land, Trigonometry, Navigation, Astronomy, Dyaling, Geo∣graphy, Fortification and Gunnery, and Astrology in all its parts. He also Measureth Building, and Surveyeth Land for any one, having the most Experience in Surveying of any man in Eng∣land.
He hath also ready for the Presse and will shortly be made publick a small price of Dialling, called, Clavis Horologie, wherein shall be shewn how to make all manner of Regular Dyals, and how to reduce all Irregular Dyals to Regular Forms, by means of a new latitude and new declination. And also a Table of Altitude of the Sun for every hour of the day in the beginning of each Sign from one degree of Latitude to ninety, and their Application for placing of the Fur∣niture on all manner of Dyals however scituated with the manner of making the Dyals that was in the Kings privy-Garden, with a ma∣ny Varieties that were never before made publick.
A Sure Guide to the Practical Surveyor, in two parts. The first showing how to Plot all manner of Grounds, whether small In∣closures, Champain-Ground, Wood-Lands, Mountains, and Dales, by the Semicircle, Plain Table and Chain. As also how to find the Area, or contents thereof, with the manner of protract∣ing, Reducing, and Dividing the same, and also how to inclose a Mannor lying in a common Field, with the drawing of a perfect Draught or Map thereof, and how to deck and beautifie the same. And likewise how to convey water from any spring-head, to any ap∣pointed place. The second shewing how to take the Ground-Plot of any City or Corporation. As also the Mensuration of Roads, High∣wayes, and Rivers, with he manner of making a Map of any Coun∣try or Kingdome: The Like never before extant. By