Parentalia or Memoirs of the Family of the Wrens Viz. of Mathew Bishop of Ely, Christopher Dean of Windsor But Chiefly of --- Surveyor-General of the - Softcover

Wren, Christopher

Softcover

ISBN 10: 1231233222 ISBN 13: 9781231233221

Verlag: RareBooksClub.com, 2012

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1750 Excerpt: ...to his Judges was in 16 53. When the great Man abovemention'd was invested with the Office of Proteflor, and so became the greatest Person in the Nation. It is diflicult to reconcile this Account with what is recorded of Sir lVillia'n Petty, " That he in L647, had a Patent granted him by the Parliament " for seventeen Years, to teach his Art of Douhle Wrz'tz'ng." Rush-worth's Hist. Coll. Part IV. Ward's Lives of Grzsham Professors, p. 218.-It is evident, that in the Tears before recited, he had no Intelligence of Pett)-'s Art and Patent. It is a common Saying; " Good W'z'ts jump." He contriv'd a Needle that would play in a Coach, as well useful to know the Coast and Way join'd with the Way-wiser, as a pleasant Diverfion to the Traveller, who might thus, as it were sail by Land. The Machine is fi-am'd after this Manner. In a Sphere of Glass of two Inches Diameter, half full of Water, cause a heavy short broad Needle fix'd to a Chart to swim, being buoy'd up by the Chart, and both varnish'd; instead of a Cap and Pin, let the perforated Needle play about a small Wire, or Horse-Hair extended like a perpendicular Axis in the glass Sphere, whose Nadir being made weighty with Lead, and an Horizon, as it were, cemented to it; let it play in Circles like the Compass; then let an hemispherical Concave, containing the Sphere in its Circles, be hung upon Springs after this Manner. Suppose a Basis upon which are eredted perpendicularly three stiff Brass Springs, from the Ends of which Springs are Strings st1'ain'd, forming an equilateral Triangle, the Middle of whose Sides pass through three small Loops on the Brim of the Concave, which therefore hanging on the Strings, represent a Circle infcrib'd in a Triangle: fi'om the Middle of the Bafis ar...

Über diese Auflage

• Verlag: RareBooksClub.com
• Erscheinungsdatum: 2012
• ISBN 10: 1231233222
• ISBN 13: 9781231233221
• Einband: Tapa blanda
• Anzahl der Seiten: 124