C 52 ] 
Furtpier comparison between the new and old 
measures : 
30 new inches equal to the old yardo 
37 j new inches equal to the English ell of 45 inches 
English. 
new inches equal to the Flemish ell of 27 
inches English. 
100 new feet, or a new perch, equal to 6 old perches 
and 1 footi 
1000 new feet, or a new furlong, equal to 1 old fur¬ 
long, 20 old perches and 10 feet. 
10000 new feet, or a new mile, equal to 1 old milc^ 
7 old furlongs, 6 old perches and 1 foot. 
StTPERFICIAL MEASURE, 
Will continue to be estimated in squares of the 
measure of length, if the sides are given in inches, 
lines and points, the product will be square inches, 
lines, points and decimal parts of a point; and mul¬ 
tiplying the product by 1,44, the result will be old 
inches, lines, points, See. and the lines and points, 
8cc. may be converted to the duodecimal denomina¬ 
tion of primes, seconds, thirds, &c. by constantly 
multiplying by 12. 
If the sides are given in feet, the product or area, 
will be the same in the new as in the old. 
If the sides are given in feet^ inches, lines, Stc. 
the feet part of the product will be indifferently old 
