Jwiftnejfe of its compQund motien Jlill Jlacj^ns ? And fo, rvhy have we 
not Springtides at the New Moon ( when the motion is fmftejl ) and 
Neap-tides at Full Moon ( rvhen the motion is Jloweji ) but Spring tides ' 
tjt both ? The anfwer ( if obferved ) is already given ih my Hf* 
pQthefisix. fdf. Becaufethe effcdt is indifferently to follow, ei- 
therupona fuddain Acceleration, or a fuddain Retardation. 
( Like as aloofe thing, lying on a moving body ^ if the body 
be thruft fuddainly forward, that loofe thing is caft back, or ra- 
ther lefi behind, not having yet obtained an equal impetus with 
, that of the body, on which it lyes; but if flopped, ornotably 
retarded, that loofe incumbent is thrown forward, by itsfor- 
' merly contradied impetus not yet qualified or accomodated to 
the flownefs-of the^Sody, on which it lyes. ) Now both of thefe 
happening, the one at the New Moon, the other at the Full 
Moon, do caufe high Tides at both. 
4. To the fourth Objec^iion, That the higheJl Tydes are not at 
allplaces^ about the Nevp Moon and FuU Mom ; and particularly ^ 
that^ in feme places of the Eafl Indies^ the Highefi Tydes are at the 
§lmdratures : I muft firft anfwer in general 5 That as to the par- 
ticular varieties of Tydes in feveral parts of the World, I can- 
Kot pretend to give a fatisfadiory account, for want of a com- 
petent Hiftory of Tydes, (gc. Becaufe ( as is intimated in what 
I wrote in the general) the various pofitionsof Chanels, Bays, 
Promontories, Gulfs, Shallows, Currents, Trade-winds, 
muft needs make an innumerable variety of Accidents in par- 
ticular places, of which no fatisfadtory account is to be given 
from the general Hypothecs ( though never fo true ) without a 
due confideration of all thofe. Which is a task too great for 
me to undertake, being fo ill furniflied with materials for it. 
And then as to the particular infta^nce of fome| places in the 
Majl Indies, where thb higheft Tydes are at the ^luadratures : I 
fuppofe, it maybe chiefly intended of thole. 2bo\xtCambaia^ 
^wdPegu. At which places, befide that they are fituatc at the 
inmoft parts of Vaft Bayes, or Gulfs ("as they are called J 
they have alfovaft In^draughts of fome hundred Miles within 
Land ; which when the Tydes are out, do lye (in a manner) ^ 
quite dry : And may therefore very well be fuppofed to parti- % 
cipate the efFed: of the Menftrual Tydes many dayes after the * 
caufe 
