WEIGHTS AND MEASURES. '6 



palm is 3 inches, a hand is 4 inches, a span is 9 inches, a cubit 

 is 18 inches, a fathom is 6 feet, an ell English is 45 inches ; the 

 length of a pendulum vibrating seconds at London 39.1393 inches. 



IMPERIAL SQUARE, OR SUPERFICIAL MEASURE, 

 144 square inches = 1 square foot. 

 9 square feet = 1 square yard. 

 30 J square yards = 1 square pole = 272J square feet. 

 40 square poles = 1 rood =1210 square yards. 



4 roods = 1 acre = 4:84:0 " 



640 acres = 1 square mile. 



The Irish lineal pole or perch is 7 yards, and the square perch 

 49 square yards; the Imperial square pole being 30 J square 

 yards, the acre is to the Irish as 30J to 49, or as 121 to 196. 

 100 square feet = a square of flooring; 36 square yards = a 

 rood of building ; 272J square feet are sometimes reckoned a rood 

 of brick work. 



The chain used for measuring land is 4 poles or 22 yards long, 

 and consists of 100 links, each link being ^^ of a yard, or 7.92 

 inches long: 10,000 square links make a square chain; 25,000 

 square links = a square rood; 100,000 square links = a square 



CUBIC, OR SOLID MEASURE. 

 1728 cubic inches = 1 cubic foot. 

 27 cubic feet = 1 cubic yard = 46656 cubic inches. 



A cubic inch of water weighs 252.458 grains, or .0360654 

 pound Imperial, and a cubic foot 62.321 pounds; a barrel bulk is 

 5 cubic feet; a ton of shipping is 42 cubic feet; a load of unhewed 

 timber is 40 cubic feet; a load of squared timber is 50 cubic feet. 



SCOTCH LINEAL MEASURE. 



ells. Imp. inches. 



leU = 37.0598= 3.088316- feet. 



6 ells =lfall = 222.3588= 18.5299 



4 falls =1 chain = 24= 889.4352= 74.1196 



10 chains =lfurlong= 240= 8894.352 = 247.0653- yards. 

 8furlongs=lmile =1920=71154.816 =1976.5226- " 



There having been some uncertainty regarding the length of 

 the Scotch ell, a jury was appointed by the Sheriff- Depute of the 

 County of Edinburgh, which met 4th February, 1826, and 

 determined, in conformity to a report by competent persons, that 



