[ i59 ] 
fame time, depreffes it at a Quadrant’s Diftance, by 
augmenting the Gravity there, fo that the fuperior 
Altitude of one Part of the Ocean is immediately 
balanced by the fuperior Gravitation of another; do 
not, therefore, the Tides in the Ocean rife and fall 
without any progrelfive Motion, or fenfible Velo- 
city) And do not all Currents, or Streams of Tide 
(not caufed by Winds) proceed from the Interruption 
'which Land, or Shoals, give to the undulatbry Mo- 
tion which muft accompany the perpendicular A feent 
or Defcent of the Fluids ? 
2. Is it agreeable to Obfcrvation, that the Power of 
the Sun and Moon together, raifes the Tides within 
the Tropics about 14. Feet, as Newton, Halley , and 
Maclaii in fuppofe ? And how high are the Tides 
found to rife in Parts of the Ocean of a greater La- 
titude ? If the Water does not rife and fall fo much 
within the Tropics, as in Places more diftant from, 
the Equator, what hinders the greater Power to have 
a greater Effcft? For the Moon muft aft with greateft 
Farce on thofe Parts to which (he is vertical. 
3 If the Times of high and low Water- depend 
on lie Moons Appulfe to the Meridian, is it not 
high or low Water in all Parts of the Ocean, under 
the fame Meridian, about the fame time ? And is 
the Difference of rhe Times, in Places under diffe- 
rent Meridians, in any certain Proportion to their 
Difference of Longitude r 
4,. Since the Power of the Moon to raife the Tide 
in any Place is greateft when (he is neareft the Ze- 
nith, it is agreeable both to Obfcrvation and Theory, 
that the Water rifes and falls more when (he is above, 
than when below the Horizons of Places on the lame 
Side 
