And to what is proposed to be Entred, in respect of Latitude and Season, you may also add the Time of its being first set in Motion after Cleansing; which Cleansing must be done only Annually, and as near as may be on the same Day of the Month; which will much facilitate the Inequality arising from its Foulness: By which all Objections will be answer’d, and the Discovery render’d compleat and perfect. Especially if a true _Meridian Line_ be made in every considerable Port in this Kingdom, and elsewhere; for Examining the Movement at your Arrival abroad, and setting it in _Motion_, before your Departure. But remember, that where you set it going, from thence your _Departure_ must be reckon’d. And by this Method all the said Vicissitudes that may arise in respect of Latitude or Seasons, Motion of the Ship (which will be near the same in one Voyage, as in another) and Cleanness or Foulness of the Work, will also plainly appear upon Record, (by comparing one Number in the said Book with another) and will be Accounted for, and Æquated, as occasion requires: Namely, by only taking such Numbers from the said Book, to work your Proportion by, as are entred for the Latitude and Season, that you are again Arrived to, or Sailing under: As suppose into 50 Deg. in the Summer Season, then take the Number and Hours answering thereunto; and so, if in Winter, those for the Winter. By which proportionable Numbers, the said Contingencies will be truly and effectually Allowed, and the Difference in Motions justly Æquated, as was before asserted. _Note_, That in this Movement, the ~Time~ is Regulated or Conformed to the ~Motion~: Whereas in former Movements, the ~Motion~ is Regulated or Conformed to the ~Time~. And this ought to be well understood, before you can rightly comprehend what is herein contained.