done by it.) but much more in Holland , where by reafon of 
thofe Inundations, many Villages and Towns were overflow d. 
And though I Cannot fo particularly name other years, yet I can 
very fafely fay, that I very often obferved Tides ftrangely high 
about thofe times of the year. 
This Obfervation did for divers years caufe me much to 
wonder, not only becaufe it is fo contrary to the received opi- 
nion of the two /Equinoxes i but becaufe I could not think of 
any thing fignaf at thofe times of the year : as being neither the 
two /Equinoxes ^ nor the two Solftices, nor the Sun’s Apogee um a nd 
Perigeeum » (or Earths Apbelium and Perihelium 5 ) nor indeed,at 
contrary times of the year, which at leaft, would feem to be ex- 
pected. From Alhollandtide to Candlemafs being but three 
months ; and from thence to Alhollandtide again nine months. 
At length it came into my mind, about four years fince, that 
though there do not about thefe times happen any Jingle fignal 
Accident, which might call it on thefe times, yet there is a com- 
peundof two that may do it : Which is the Inequality of th t Na- 
tural day ( I mean that of 24* hours,from noon to noon) arifing 
at leaft from a double canfe ^ either of which fingly would caft 
it upon other times, but both joyntly on thofe. 
It’s commonly thought 3 how unequal foever the length be 
of the Artjjcial dayes as contradiftinguiftied to nights, yet that 
the Matural pay, reckoning from noon to noon, are all equal.: 
But Ajlronomerj know well, that even thefe dayes are unequal. 
For, this Natural Day is meafured notonely by one intire con- 
verfion of the AE quin e£li al > or 2,4. JEquinoUial hours, (which is 
indeed taken to be performed in equal times,) but 'mcveaics, by 
fo much, as anfwers to that part of the Suns (or Earths,) Annual 
motion as is performed iii that time. For, when that part of the 
MquinoBial, which (with the Sun) was at the Meridian yefterday 
at noon, is come thither again to day, it is not yet Noon (becaufe 
the Sun is not no w at the place where yefterday he was , but is 
gone forward about one degree,tnore or lefs) but weunuft flay 
till that place 5 where the Sim now is, comes to the Meridiajibe - 
fore it be now Noon, 
Now this Additament(above the 24 JEquinoUial hours,©! intire 
converflonofthe ^yww^W) is upon a double account une- 
qual; 
