[TheObfcrver *d not think it ncceffary to mike every where in the 
Ebbing the like Divifion, he doth in the flowing hours, alledging for 
that otmfsion the eafinefsof fucha divifion, foon made by any body, 
becaufe of the near agreement betwixt the divifions of both.] 
8. The ufual number of Tydes from New Moon to New 
Moon, or from th^Ftill to the Full, is Fifty nine. 
In the River oteevew, * o. miles above Briftol near Ncwn- 
ham, 1 6o. miles from the Rivers mouth ( Lundj,) the head of 
the Floud, at its coming in in Spring- tydes, arifeth in height 
Tike a Wall near nine foot high , and fo runs for many miles toge- 
ther, covering at once all the Shoales, which were dry before; 
at which time all Veffels, that lye in the way of the faid Head- 
tydes, or (as it is vulgarly called) Btar, are commonly Of erfet 
or carried upon the Banks,and the head of the Tyde being paft 5 
fuch Veffels are left dry again. It flows there but tm hours, 
and eighteen foot in height , and it ebbs ten hours. The reafon 
of the faid Boar is doubtleft the (heightening and flioaling ot 
the River in that place, it being there but half a mile broad 5 a* 
it is but 20. pcarches over, three miles higher 3 running tapering 
to Gloceflen. 
So far this observer 5 To whom as there are due particular ac- 
knowledgements for his care of obferving hitherto, and for his 
franknefs of communicating^ he is further defir'd to continue his 
Obfervations with as much exa£tnefs as may be, according to 
the dirediions fet down in the above mentioned Numb. i8.efpe- 
cially to take particular notice, whether the Annual High-tydes, 
which he feems to fixonthofe (be it at New or Full) which hap- 
pen neareft the Equinox^ (be it before or after it) be not al- 
ways before the Vernal Equinox in March, and upon the New 
Moon 5 and always after the Autumnal ' in September^ and ©pan 
the Ful-moon Spring-tydes : Eorafmuch as by aformer relation, 
imparted by a curious Gentleman, we have been informed, that 
the Annual higheft Tydes about Cbefftm- bridge , were at St. 
David* and Michaelmas- Stxzzm , that is, the one a little be- 
fore the Vernal, and the other fomewhat after the Autumnal 
Equinox, which agrees aMb with the Conjedlure of a very in- 
t-ellig n£ Mathematician, who is withal of opinion, that be- 
GiharenotfarfroiB the equinoxes, (though the one 
