c h ) 
I 
III. A. TABULAR Account, ihewing the Strength 
and gradual Increafe and Decreale of the Tides of 
Flood and Ebb in the River Thames, as oblerv'd 
in Lambeth Reach, off of Manchefter Stairs, and 
in the Middle of the River, with a new Inllru- 
, ment call’d the Marine Surveyor y on the ^th of 
Juney 1720^ It being then Full Moon, and con- 
feqiiently’ a Spring Tide. The Movement of the 
Machine 14 Inches under Water. 
■ F L 0 0 
D 
• 
The 
Time 
of 
Flood. 
The 
Depth 
of the 
River, 
-The 
Run of 
theCur- 
rent in 
every 
15 Min, 
> 
The whole 
Run of the 
Current to 
the Times 
exprefs’d in 
the firft 
Column. 
The fame 
reduced to 
Statute Miles 
of 5280 feet, 
or 528 Re- 
volutions of 
the Machine. 
The Redufti- 
on’into Englilh 
maritime Miles 
of 6000 feet,or 
600 Revolu- 
tions. 
H.' M. 
Ft. 
In. 
Feet. 
Peer. 
M. 
Pts- Rev, 
M. 
Pts, 
Rev. 
15 
5 
1 10 
no 
1 1 
1 1 
30 
6 
590 
700 
70 
70 
6 
9 
I Too 
I a 00 
4 
48 
1 
4 : 
30 
r 
7 
1490 
3290 
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