• ( ) 
Depths, being as the Roots of thofe refpet^iive Depths, 
may be rcprefented by the Ordinate- of a Faraho.n, 
whole Axis repteleiUj the entire Depth. of the Water. 
ConCet^ueiitly, fince. the C^ua;K,iiies of ^Vater, running 
bur at different Depths, are as thofe Velocities, th^ 
likew:j(e may be. reprefented by the fame Ordinates, and 
the C^anrity of .Water difeharg’d from the whole Sc- 
dibn, will be repceiented .by the Rsrabolick Space; and 
the! mean Velocity by that fame Spaep divided by the 
Abfciffe. 
The Times, being as the Qiiantities of Water dif- 
charged , may be reprefented in the fame manner as 
thofe Quantities. 
Hence he derives hi^ general Theorem, That the Qjaan- 
titics of Water difebaiged, are in a ratio compounded 
of the fe(quip!icate of the Depths of the Water, the 
ratio of the Breadths of the Section,, and of that of the 
times of the Efffux. 
The Author proceeds now to the mixt Motion of 
Water; in order to' ^ifeover the Nature of wliich he 
has made fbme curious Experiments, after the folloiving 
manner : 
- A large cylindrical Veflel, with a perpendicular Se- 
dion through the fide, of it, was placed upright in a 
dead Water ; fb that the bottom of the Veffel was a con* 
fiderable Depth below the Stirface of the Water; and 
the' Veflel was kept immovable in this fituation. 
Above this was Ext another Veflel, full of Watery 
whbfe Bottom was pierced >yith >6 Holes, exadly round, 
and of the fame Bore, and fb order’d,, as- to be open’d, 
or flppt at pleafure. The Water in this Veflel was al- 
ways kept at the fame Height, by means pf a third 
Veflel, Which fiipply’d the Wace^, . as fafl: as it.ran out 
at the round Holes, in the Bottom ; and a large Aper- 
ture^ in the fide, of the fecond, WefTel near' the Top. 
' . ' ' ’ pre vented 
