\ C440 
Ball ( ) I>ad ( ^ ) at 8 fathom and i foot ^ returned at 20 5 
repeated at 8 fathom, returned at i^. 
Tried the third time at i o fathom and 4 foot 5 reiurn'd at 28, 
A fourth Trial, at the fame depth, )uft the fame, 
A fifth, at 10 fathom, 5 foot, returned in 27, 
Afixth Trial, juft the fame. 
A feventh, at 1 2 fathom, 5 foot, in 37. 
An eighth Trial, juft the fame. 
Another Day, near the fame place. 
Note 5 That the Pendulum was this Day adjufted , and made a 
little fliorter 5 there having been hut 5 8 vibrations in a Minute^ th« 
other Day. 
Ball ( ) Lead ( 5 ) at 1 4 fathom , returned in 3 2 ~. 
A fecond Trial, a little after in the fame place , returned in 33^ 
In making of which Trial , the Vibrations were told aloud , and 
the Lead having been let down by a Line , was found to touch the 
bottom in juft half thetime, the Ball ftaid under water. By a fe- 
cond Trial, the Afcending and Defcendirig was found to be in 
equal times. And by a third Trial with another Lead, the very 
fame was found , vid, 16 \ defcending, and 16 . afcending. This 
Lead and Ball let down without a Line , the Ball returned m 13 vi- 
brations a fign it went not to the bottom. 
A Trial made with a Lead , whofe Iron-Cxook wa'sfaften*d at 
the top of it (like that in the Figure 3.) fucceeded very well, and 
the Ball returned in 34 \. But by reafon of the Current, the Ex- 
perimenters could not perceive , when the Lead touched the bot- j 
torn. This Lead being let down without a Line, the Ball return- 
ed in 3 2 ] . T he depth of the water was now found by the Ships 
Lead, to be 14 fathom. | 
Another Trial was made with a Line , bowing the point of the \ 
Lead (like that in the Jif. 4.) and the Ball returh'd in 34. The i 
fame let down without a Line , the Ball returned in 6 or 7 vibrati- 
ons-, a fign again, it went not to the bottom. 1 
Ina Trial with another Lead , the Ball return d in34. j 
Repeated again vmh the fame fuccefs. ! 
In ! 
