Chronometria or, the measure of time in directions. According to a new, natural, and accurate institution. Containing tables of the equation of arch's of direction, thereto corresponding. Whereby with much facility, directions in all nativities are made to keep time with accidents, within the limits of an astronomical error. Manifestly evidencing and proving, the excellent and undeniable verity of astrology, and rendring that caelestial science, as conspicuous, and demonstrable, as any other part of the mathematicks whatsoever. As also, divers necessary, and exquisite rules, and precepts of art, together with the use and explanation of the tables / practically illustrated in the geniture of Mr. Henry Coley. [With preface by Coley] By John Kendal.
- Kendal, John
- Date:
- 1684
Licence: Public Domain Mark
Credit: Chronometria or, the measure of time in directions. According to a new, natural, and accurate institution. Containing tables of the equation of arch's of direction, thereto corresponding. Whereby with much facility, directions in all nativities are made to keep time with accidents, within the limits of an astronomical error. Manifestly evidencing and proving, the excellent and undeniable verity of astrology, and rendring that caelestial science, as conspicuous, and demonstrable, as any other part of the mathematicks whatsoever. As also, divers necessary, and exquisite rules, and precepts of art, together with the use and explanation of the tables / practically illustrated in the geniture of Mr. Henry Coley. [With preface by Coley] By John Kendal. Source: Wellcome Collection.
![= Se eet a a AB ce op]. 2. When.a Nativity is Rectifyed, To reduce an Arch of Direttion into.the true time of the Ac- cident, pertaining to the fame Direttion. To perform the firft, obferve this Rule ; having the Accident written down in Compleat Years, Months , and Days; account for every Year 1 Degree ; the Number of Months, Mul- tiply by 5, and let the Product be Minutés 3’ and divide the Number of odd days by 6, and the Quotient will be odd Minutes, to be added to the Number of Minutes laft found: So have you the time of the Accident reduced into De- erees and Minutes. Then enter the Equation Tables, with the Sign, Degree, and neare{t Minute of the Promittor (pertaining to the Direction, fignifying the Accident) at the head of the Tables, and the Number of years on the fide under the, Title 4zzi, and at the Common Angle ; you fhall have the cAquation defired 5 which muft be added or Subtracted , to, or from, the aforefound Degrees and Minutes, (which the time of the Accident was reduced you fhall find by cafting your Eye up towards the Table. And you have the time of the Acci- To perform the Second: Enter the ‘Tables, withthe piace of your Promittor, as aforefaid, and take out the Acquation correfponding with fo many years Qs, oA . ——](https://iiif.wellcomecollection.org/image/b30335668_0049.jp2/full/800%2C/0/default.jpg)
