Correspondence of Sir Isaac Newton and Professor Cotes : including letters of other eminent men, now first published from the originals in the library of Trinity College, Cambridge; together with an appendix containing other unpublished letters and papers by Newton; with notes, synoptical view of the philosopher's life, and a variety of details illustrative of his history, by J. Edleston.
- Isaac Newton
- Date:
- 1850
Licence: Public Domain Mark
Credit: Correspondence of Sir Isaac Newton and Professor Cotes : including letters of other eminent men, now first published from the originals in the library of Trinity College, Cambridge; together with an appendix containing other unpublished letters and papers by Newton; with notes, synoptical view of the philosopher's life, and a variety of details illustrative of his history, by J. Edleston. Source: Wellcome Collection.
180/430 (page 74)
![observe. The rest may stand unto the words [Et simili computo fit Tabula sequens] correcting only the numbers as you propose & putting the numbers 229 & 230 instead of 689 & 692. The Table is computed to ye excess of 17 miles rather then to that of 32 miles, because that of 17 is the least that can be & is certain upon a supposition that the earth is uniform, that of 32 is not yet sufficiently ascer- tained, & I suspect that it is too big. After the last observations of Des Hayes ending wth these words [et quod in insula S. Dominici eadem esset ped. 3, lin. 7] add this Paragraph. Deniq: anno 1704, P. Fuellcus invenit in Porto-belo in America longitudinem Penduli ad minuta secunda oscil- lantis esse pedum trium Parisiensium et linearum 5^, id est tribus circiter lineis breviorem quam in Latitudine Lutetiae Parisiorum; & subinde ad insulam Martinicam navigans invenit longitudinem Penduli isochroni esse pe- dum trium Parisiensium et linearum 5^-. Latitudo autem Paraibae est 6?r 38' in austrum et ea Porto-beli 9^ 33' in boream, et Latitudines insularum &c. You may here put the Latitude of Goree 14^ 40'. I have not books by me to examin it. Let the next Paragraph run thus. Observavit utiq: ad ignem calefacta evasit pedis unius cum quarta parte lineae In priore casu calor major fuit quam in posteriore, in hoc vero major fuit quam calor externarum partium corporis humani. Nam metalla ad solem aestivum valde incalescunt sed excessu quartam partem lineae unius vix superante differentia prodiit non minor quam l1 g lineae non multo major quam linearum 2|-. Et inter hos limites quantitas mediocris est 2^-. Propter calores locorum in Zona torrida negligamus tres decimas partes lineae et manebit differentia duarum linearum cir- citer jam autus in ratione differentiarum fiet milli arium plus minus 32. Est igitur excessus ille non minor](https://iiif.wellcomecollection.org/image/b28738317_0182.jp2/full/800%2C/0/default.jpg)