( ii8 ) 
W. A ^ropojttion on the Balance, not taken Notice 
of by Mechanical Writers, explain’d and con- 
firm’d by an Experiment before the <Spyal So- 
ciety, by].'!. Desaguliers, L. L. D. 
F. <H, S. 
T HO^ the following Theorem is agreeable to^ 
and deducihle from^ Mechanical Principles^ 
yet as it has not been taken Notice of hy Mechanic 
cal Writers^ though often talk'd of among Handi- 
craft PForkmen^ 1 thought it might not he improper 
to take Notice of it here^ and to make an Experi- 
ment agreeable to the De monfir at ion. 
Theorem, Figure i. 
A B is a Balance, on which -is fuppos’d to hang at 
one End B the Scale E with a Man in it, whoiscoun- 
terpoifed by the Weight W hanging at A, the other 
End of the Balance. 1 fay, that if fuch a Man, with 
a Cane or any rigid ftreight Body, pufhes upwards a- 
gainft the Beam any where between the Points C and 
B (provided he does not pulh diredly againftB) he 
will thereby make himfelf heavier, or over-poife the 
Weight W, though the Stop G G hinders the Scale E 
from being thruft outwards fromwards C towards G G. 
I fay likewife. That if the Scale and Man Ihould hang 
from D, the Man by pufliing upwards againfl B, or 
any where between B and D (provided he docs not 
pufli diredly againftD) will make himfelf lighter, or 
be 
