(445) 
In a Trial with a Lead 3 whofe Nail was fetawry (like that of 
the Fi^sO the Ball returned in 34. After which Trial, the depth 
was found to be joft 14 fathom. 
T he laft Lead and Ball being let down without a Line , the Ball 
returned at 35. 
In another Trial with a Lead that never failed, the Ball returned 
in 34, and the Lead toucht the bottom at 17. 
By a Trial with another Lead, the fame time was found ex- 
a-aiy. 
By a third Trial with this laft, the very fame. 
Thefe Trials were made near about High- water, at the depth of 
14 fathom juft by meafure : And in them^ the motions feem to be 
5 foot every fecond. 
In all thefe Trials , the greateft difficulty was , in the ufe of Co- 
nical Figures , with Iron Crooks , to bend the Iron, thatitmight 
be fure to carry down the Ball with it to the bottom , and when 
come thither^ to let it go: for almoft every one of thefe Leads 
failed in one of thefe requifites , till by feveral Trials they had been 
adjufted. ; 
It is not to be omitted , That the laft Trials being made near 
High- water, the Ball was found to rife (by the Boat 5 being per- 
mitted to drive) far off upon one fide, out of the way, that any 
light things fuffered to fwim on the water, would be carried which 
feemed to argue a motion of the under parts of the water , differ- 
ing from that of the upper (a thing which is faid to be at certain 
times of theTydes, both at the mouth of thtSomd^ and of the 
Streights which deferves to be further inquired into.) The An- 
gle made by thefe different motions, feemed to be about 40 De^ 
grees. 
Mmm z 6* To 
