C 61 .3 
aVoii*du{)ois ounces is to 1000 ounces, the weight of 
water in a cubic foot, so is the eube of the parts, in* 
to which the ruler is divided, (to wit. 1,000,000,000) 
to the cube of the parts Which will naake a foot in 
length, that is as 
id635 to 1000, ao is lOOGOOOOOO to 
1000 
I§425) 1000000000000(^4000000^ the Cube root> , 
,93750 ? 
• ■ . ’ €2500 
625-0 
t)F which is 400; and thus, 400 of the parts, into 
which the ruler is divided, is precisely one EngUsli 
or standard foot i and this may be thus proved 'i 
As the Vessel contains 15625 ounces of water, or 
15625 cubic inches, if an ounce can be contained 
in a cubic inch, then the side of such a vessel 
must necessarily be 25 inches, that being the cube 
root of 15625 , the solid contents of the water in the 
vessel; but 25 inches are to 10 standard inches, 
the length of an English foot, as the cube of 10 or 
1000 is to 400 ; and hence, it results, that if all our 
weights were lost, but any standard of the measures 
of length retained, we should be able to make new 
weights ; and hence it appears also, that as the cube 
root of any given Vi^eight of water in avoirdupois 
ounces, contained in any cubic vessel, is to 10, the 
new inches in a foot, so is 1000 to the number of 
parts when the interior side of such vessel is dividedl 
into 1000 parts. 
l 
