-------------------------------------------------------------------------- The Movement, Number 1. was } and { Then made one Revolution, in 5 first Set Going _Sept. 4. 1714._ } { days, 4 hours, and a quarter. +-------+---------+---------+------+--------+---------------+------------+ |Degrees|Numbers | Hours | Diff-|Seasons | Time when the |Numbers, | | of |to be |spent in |erence|in which| Movement was |shewing how | | Lati- |found and|producing| in |the Ship| set in Motion |the Motion | | tude. |used in |the said | Num- |was | & Try’d; at |is retarded | | |finding |Numbers. | bers.|Sailing.| & after first |by Foulness,| | | the | | | | Making or |on a Tryal | | |Hour at | | | | Cleaning. |of 10 Days | | |_London_.| | | | |at a time. | | | | | | | | | | I. | II. | III. | IV. | V. | VI. | VII. Days.| | 50 | 29276.2 | 240 | |_Autumn_|_Sep. 16. 1714_|29276.2| 10 | | 52 | 37962.4 | 432 | |_Winter_|_Dec. 4. 1714_|29272.5| 10 | | 44 | 37942. | 430 | |_Spring_|_Ma. 20. 1715_|29264. | 10 | | 48 | 37912.2 | 431 | |_Summer_|_June 1. 1715_|29237.4| 10 | +-------+---------+---------+------+--------+---------------+-------+----+ | Cleansed _Sept. 5. 1715._ Then made one Revol. in 5 days, 4 ho. and ⅛.| +-------+---------+---------+------+--------+---------------+-------+----+ | 50 | 29274.2 | 240 | |_Autumn_|_Sept. 5. 1715_|29274.2| 10 | | 52 | 37957.9 | 432 | |_Winter_|_Dec. 17. 1715_|29268. | 10 | | 44 | 37942. | 430 | |_Spring_|_Ma. 16. 1715_|29264. | 10 | | 48 | 37907.5 | 431 | |_Summer_|_June 8. 1716_|29232.7| 10 | +-------+---------+---------+------+--------+---------------+-------+----+ _Note_, That the Numbers to be used after _Cleaning_, (_viz._ after _Sept. 5. 1715._) are found by Substracting or Adding the Difference between the two Numbers in the Seventh Column, (_viz._ that of _Sept. 5._) and that of _Sept. 16._ (which is only 2.) out of the former Numbers to be used for the same Latitude; on which there will remain 29274.2 for the _New_ Number to be used in Lat. 50. Deg. in _Autumn_, instead of the former, until the next Cleaning, (which must be only Annually) and so of the rest, from one Cleaning to another. And this method must be used for the respective Latitudes, according as Observations shall be made therein, and Numbers found to answer thereunto. _Note also_, That this Experiment may be sufficiently Tryed and Proved, by only two or three Voyages, to the South-West parts of _Ireland_, or to _Newfoundland_ at farthest.