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be fafpended a Columaof Water of the height E F; but 
the longer and wider Leg B C wilLfufpend no more 
than a Column of the length G H. 
Exf. II. This Siphon being fill’d with Water, and 
held in the fame Pofition as in the Figure, the Water 
will not run out at C the Orifice of the longer Leg, un- 
lefsD C, the difference of the Legs A B and B C, exceed 
the length E F. 
• Fig. 8 . Exf. 12. If the narrower Leg £Cbe long- 
er than AB, the Water will run out at C, if DC the 
difference of the Legs exceed EF\ otherwife it will 
remain fufpended. 
In thefe two Experimentsit is plain, that the Columns 
D C are fufpended by the attradfion of the Peripheries at 
A, fince their lengths are equal to E F,or to the length of 
the Column, which by the fuppofition thofe Peripheries 
are able to fupport; whereas the Tubes F C will fuflain 
Columns, whole lengths are equal to G H. 
Tho’ thefe Experiments feem to be conclufive, yec 
it may not be improper to prevent an Objediion, which 
naturally prefents it felf, and which at firll view may 
be thought fufficient to overturn our Theory. 
Fig. 5*. For fince a Periphery of the Tube E D is 
able to fullain no j more than a Column of the 
length A F, contain’d in the fame Tube ; how comes 
it to (uffaina Column of the fame length in the wider 
Tube £)C, which is as much greater than the former, 
as the Sedion of the wider Tube exceeds that of the 
narrower ? 
Again, if a Periphery of the wider Tube 
DC be able to fuftain a Column of Water in the fame 
Tube, of the length BG\ why will it fupport no more 
than a Column of the fame length in the narrower 
Tube ED} 
Which 
