[ * *74 ] 
at the End of the Balance m, and forces it down, the 
Balance m moving on its Centre v. When one Side 
of m is brought down, the String which conne&s it 
to f i, running over the Pulley /, raifes the End /i, 
of the Canal e, (which turns upon its Centre r,) higher 
than fz 5 confcqucntly, all the W ater which conftantly 
runs thro' the Siphon d 7 inftantly runs thro ’ fz into 
g 2 , till the fame Operation is performed in that Veffe?, 
and fo on alternately. 
As the Height the Water rifes \ng in an Hour, viz. 
from s to t y is equal to the Circumference of n> the 
floaty riftng that Height along with the Water, lets 
the Weight x aft upon the Pulley n 9 which carries 
with it the Cylinder o ; and, giving a Revolution, 
makes the Index k defcribeanHour upon theDial-Platc. 
This Revolution is performed by the Pulley n i ; the 
next is to be by n 2, whilft n 1 goes back, as the Wa- 
ter in g 1 runs out thro' the Tantalus ; for^y mud fol- 
low the Water, as its Weight increafes out of Water. 
The Axis 0 always keeps moving the fame Way; 
the Index k deferibes the Minutes ; the Tantalus's 
muft be wider than the Siphon d that the Veifels 
gg may be fure to be empty as low as s 9 before the 
Water returns to them. 
Printed for C. Davis, over-againft Gray' s-Inn Gate 
inHolboum , Printer to the Royal Society, 
M.dcc.xlvit. 
* 
