(2o68) 
levifli for the further clearing of this matter^that obfervation were 
made at Brifiol (becaufe there is the moft confiderable FJux and 
Reflux of any Port of England,) Whether this year 1670* the 
Tydes be not higher (r<?»}/^er<3!/*r5 &cO when the d pafleihx, r. 
and ^3 than when (he paffeth through the oppofite figns — and 
^ 5 and particularly whether the Spring Tydes be not fenfibly 
higher after the C^A^^^e^than after the Full in February ^March^ and 
April and higher after the F//// then after the Change in Augnji^ 
September^ and OBober 5 and alfoj Whether the Neap, tides in Alay 
and Junevik not apparently higher than expefted.I am promifed, 
the obfervation (hall be made here at Weymouth for this whole year 
round 5 from whence I have already received this account, that 
thisprefentFe^r«^irjf^ i6tf. the jSpring- Tydes ran very high after 
the Change^ihoxx^ the weather were pretty calm, and that wind 
that was not very favourable to the Tydes, and that the Spring- 
Tydes after the FullwevQ very loWj and weak, which is exaftly 
according to my conjedure. 
Dr. W allW f A»Jiper to the foregoitjg AnimadverJions^direUed in a 
Letter to the Publijher^ March 19. i6^f» 
SI Yours with the inclofed Animadverfions of M» Childrey on 
_ my Hypothefisof Tydes^ came fo late to hand on Thurfday 
laft (when the Poft was almoft ready to be gone) that I had not 
tirae^by that Poftjto give you an account of them. And it is not 
muchjl need to fay now 5 for I do not find, that he and I are like 
much todifagree» 
That the have a great influence on the Tydes of partt« 
cull* Coafts and Havens^accordingas theyaremoreor lefsftiffor 
flackjand blow from this or that partj do not at all queftion 5 but 
did alwayes take for granted, as generally received , and upon 
good grounds* And the like I (ay oiLatid waters 3 which (though 
as to the Sea they fignify not much in this point) are, as to In-land 
Riversjvery confiderable 5 efpecially as to Inundations upon ri- 
fing of the Water : Which is rather by Checking than Promoting 
theTydes.Forcertainly^thefeLand-waterSj meeting the Tyde of 
Flood, do hinder it from coming fo far up the River as other* 
wife it would 5 and confccjuentlyjif, notwithftanding fuch Land- 
flouds, 
