. C ) 
it 13 aifo obferved, that cateris parihuSy they£qui- 
noctial Spring Tides in March and September, or near 
them, are the Higheft, and the Neap Tides theToweft; 
which proceeds trom the greater Agitation of the Wa- 
ters, when the fluid Spheroid refolves about a great 
Circle of the Earth, than when it turns about in a iefler 
Circle ; it being plain, that if the Moon were ccnfticu- 
ted in the Pole and there flood, that the Spfexroid would 
have a fixt Pofition, and that it would be alvvays high 
Water under the Poles, and low Water every where uo». 
der the quinodial : and therefore the nearer the Moot 
approaches the Poles, the lefs is the agitation of the O- 
cean, which is of all the greateft, when the Moon is 
m the i^quinodial, or fartheft diftant from the Poles. 
Whence the Sun and Moon, being either conjoyned or 
oppofitein the ^quinoftial, produce the greateft Spring 
Tides and the fubfequent Neap Tides, being produced 
by the Tropical Moon in the Quarter^ are always the 
leaft Tides ; whereas in June and December, the Spring 
Tides are made by the Tropical Sun and Moon, and 
therefore lefs vigorous ; and the Neap Tides by the ii- 
quinoftial Moon, which therefore are the itronger : 
Hence it happens, that the difference between the Spring 
and Neap Tides in thefe Months, is much lefs confider- 
able than in March and September, And the reafoa 
why the very highefl Spring Tides are found to be ra- 
ther before the Vernal and afterthe Antumnal Equinox, 
"viz, in February and ORober^ than precifely upon them, 
is, becaufe the Sun is nearer the Earth in the Winter 
Months, and fo comes to have a greater Effeft in pro- 
ducing the Tides. ' 
Hitherto we have confidered fuch Affedions of the 
Tides as are Univerfal,without relation to particular Ca- 
fes ,• what follows frorxuhe^iffering Latitudes of places, 
will beeafily underftood by the following Figure. 
