Holwell, John. Clavis horologiae, or, A key to the whole art of arithmetical dyalling : in two parts ... : whereunto is annexed an appendix, being the explication of the pyramidical dyal set up in His Majesties garden at White-Hall, 1669, in which very many sorts of dyals are contained, by which, besides the hours of all kinds diversly expressed, many things relating to geography, astrology and astronomy, are by the suns shadow made visible to the eye, by that Reverend Father Francis Hall, alias Line, of the Society of Jesus, professor of the mathematicks at Liege in Germany

Folger bibliographic ID: 341725
ESTC number: R213613
Wing number: H2517A
Folger call number: 269- 067q
Folger holdings ID: 493128
Accession Number: 269067

Bibliographic format

quarto

General notes

Title continues: the first shewing how to draw the hour-lines on all manner of regular dyals, and how to reduce all irregular dyals into regular forms by means of a new lattitude and new declination, and that arithmetically : the second part sheweth how to place all manner of furniture on all sorts of dyals, let them be never so irregular, and that arithmetically : whereunto is annexed the tables of the altitude of the sun for every hour of the day at his entrance into the 12 signs from one degree of latitude to 90, with tables of azimuth to each latitude, and for every hour of the day at his entrance into each sign, with many other tables useful in the art of shadows The appendix has separate title page, pagination, and register; with imprint, "Printed at Liege, by Guillaume Street, in the year of our Lord 1673, and reprinted at London, 1685." Bookseller's advertisements at end of part 2 and appendix List of subscribers at end of appendix Signatures: A⁶ B-2N⁴; ²A-E⁴ F²

Item information about Folger 269- 067q

Armorial bookplate (motto: Ein doe and spairnot): "Thomas Tylston Greg.", stamp "Chris[topher?] St. J.H. Daniel ex libris", and bookseller's label "George T. Juckes & Co. Book Merchants & Exporters, 35 Aston Street, Corporation Street, Birmingham" on front pastedown, "Holwell" in manuscript on title page, sporadic wormholes throughout, with slight effect on some text and plates, old stain in bottom corner of some pages. In early leather (calf) inboard binding with gold rules on mottled spine; marbled endpapers. Acquired from E.M. Lawson, 2015-06-30 Purchase made possible by The Eric and Mary Weinmann Acquisitions Fund

Extended title: Clavis horologiae, or, A key to the whole art of arithmetical dyalling : in two parts ... : whereunto is annexed an appendix, being the explication of the pyramidical dyal set up in His Majesties garden at White-Hall, 1669, in which very many sorts of dyals are contained, by which, besides the hours of all kinds diversly expressed, many things relating to geography, astrology and astronomy, are by the suns shadow made visible to the eye, by that Reverend Father Francis Hall, alias Line, of the Society of Jesus, professor of the mathematicks at Liege in Germany / by John Holwell, teacher of the mathematicks
Alternate titles: Key to the whole art of arithmetical dyalling, Holwells dialling

Dialing Sundials Astronomical instruments Scientific apparatus and instruments

author: Holwell, John, 1649-1686?
printer: Bonny, William
bookseller: Howkins, Thomas
former owner: Greg, Thomas Tylston
former owner: Daniel, Christopher St. J. H.