ese _Papers_ for
Observing the _Tides_, here are subjoyned _Patterns_ of the _Tables_ there
mentioned; _One_, for marking the _precise Time_ of the High waters and
Low-waters during one Month; that is, between _New_ and _New_ Moon, or
_Full_ and _Full_ Moon. The _other_, for marking the _Degrees_ of the
Risings and Fallings of the Water in _Equal_ spaces of Time, and the
_Velocity_ of its motion at _several_ heights: The _Degrees_ of _Heat_ and
_Cold, &c._
The _Times_, assigned in the _first_, to the High waters and Lowest Ebbs,
are taken out of Mr. _Wing_'s Almanack, for this present year 1666, as he
calculates them for the Month of _September_ for _London Bridge_. Only,
whereas he takes notice but of _one_ High-water for every day, _Here_ are
set {312} down the Times of the other, and the two Ebbs intervening, by
subdividing the _Differences_, he assignes between two Tides, equally
amongst them. In all which, though there may be Errors, that is not to be
considered, seeing the Dissein is to Correct and State the _Times_ of the
_Tides exactly_ by _Experiments_, after this method. Mr. _Wing_ states the
High waters to fall out at _London-Bridge_ constantly, when the Moon is 46.
deg. 30. min. to the _West-ward_ of the _Meridian_. For the Times, he marks
for them, are made up by adding every day 3. hours, 6 minutes, to those in
his _Table_ for knowing the Time of the Moons coming to the South.
The _First Table_ consists of _two_ Parts, and each part of _four Columns_.
The _first_ part marks the Tides and Ebbs from the day of the _New_-Moon to
its _Full_: The _other_, from the _Full_ to the next _New_. The _first
Column_ in both parts hath the day of the Month and Week; _M._ standing
every where for _Morning_ and _A._ for _Afternoon_. The _third_ column hath
the _Character_ of the day of the Week prefixt to the Hour and Minute of
the High-water, and answering to the day of the Month. The _last_ Column
hath the same for the time of Low-water, varying the _Character_ of the
day, as often as the low-water falls out more early than the High-water. In
this _Example_ between the said _New_ Moons there falls out in all just 57.
periods of the Tide or Flowing water, and 58. of the Ebb or Low water;
which numbers vary according to the Intervals of the Moons changes, but
with what constancy and exactness, is to be inquired after: Which whosoever
undertakes to do, may keep such a _Table_, as is here proposed, in a Book
by it self.
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