lbs. the ton, in the State of New York and some of the other States the lawful hundred weight is 100 lbs. and the ton 2000 pounds. are weighed by it? How many pounds Write the signs on Q. Repeat avoirdupois weight. What articles How many kinds of units in it? What are they? in a quarter? In a hundred weight? In a ton? your slate. Do the weights in New York correspond with this table? How many pounds make a ton in New York? By this table, gold, silver, and the other precious metals are weighed. There are four different units in it, viz: pound, ounce, pennyweight and grain. Q. Repeat Troy weight. What articles are weighed by it? How many kinds of units in it? What are they? How many grains in a pennyweight? How many in an ounce? How many in a pound? How many pennyweights in an ounce? How many in a pound? This weight is used by apothecaries in compounding their medicines. It only differs from Troy weight in the different divisions of the ounce. The pound and ounce are the same in the two tables. When medicines are sold in large quan tities, the avoirdupois weight is used. There are 5 different units in apothecaries' weights, viz: pound, ounce, drachm, scruple and grain. Q. Repeat apothecaries' weight. How used? Does it differ much from Troy weight? What units are the same in both tables? Are medicines always weighed by this table? What other table is used? When? How many kinds of units in this table? What are they? How many ounces in a pound? How many drachms? How man scruples? How many grains? Write the signs of the units. 1 = 4 = 9 1 = 21 By this measure dry goods are sold in the United States. The English, French, and Flemish measures differ from these, and are used in the measurement of dry goods imported from these countries. There are three quarters in the Flemish ell, 5 quarters in the English ell, and 6 quarters in the French ell. In the United States cloth measure there are 4 units: yard, quarter, nail and inch. Q. Repeat cloth measure. For what purpose used? Do we import by this measure? How many quarters in the Flemish ell? In the English ell? In the French? How many kinds of unit in United States cloth measure? What are they? How many quarters in a yard? How many nails in a yard? How many inches? Write the signs. By this table distances are measured. The units are degree, league, mile, furlong, rod, yard, foot, inch and barleycorn. Q. Repeat long measure. For what purpose used? What are the units in it? How many furlongs in a mile? How many yards? How many feet? How many feet in a yard? How many inches? How many yards in a rod or pole? How many feet? Write down the signs. 108. LAND OR SQUARE MEASURE. 144 square inches make 1 square foot. Sign sq. ft. 9 1 square yard. Sign sq. yd. 304 square yards 66 1 square pole. Sign P. Sign R. Sign A. 640 acres 66 1 square mile. Sign M. 1=4=160=4840 =43560 1= 40=1210 =10890 =1568160 sq. in. 6272640 This table is used in measuring the content of ground or of any plane surface. A square foot is a square the sides of which are 1 foot in length; a square yard is a square the sides of which are 1 yard or 3 feet in length, &c. In measuring land, surveyors generally used an iron chain 66 feet in length, composed of 100 links, each link being 7.92 inches in length; 10 square chains make 1 acre. But their measures are reduced to those used in the above table. This table consists of the following units: square mile, acre, rood, square pole, square yard, square foot, square inch. Q. Repeat land measure. For what purpose used? What is a square foot? A square yard? Square rod? Square mile? What measure do surveyors use in measuring land? How many feet in the surveyor's chain? How many links in it? What is the length of each link? Is the content of ground generally estimated in chains or in the land measure? What are the units used in land measure? How many acres in a square mile? How many roods in an acre? How many square poles in an acre? How many square yards? Write the signs. How many square chains make 1 acre? By this table the solid contents of bodies are determined, as stone, timber, earth, boxes of goods, &c. A cubic inch is a solid with square faces, the sides of which are 1 inch in length. A cubic foot is a solid with square faces, the sides of which are 1 foot in length, &c. The solid content of a body is ascertained by measuring its length, breadth, and thickness, and multiplying these measures together. Thus, a cubic foot being a solid which is 12 inches long, 12-inches broad, and 12 inches thick, its solid content is 12 x 12 x 12 =1728 cubic inches, as in the table. And a cubic yard being a solid which measures 3 feet in each direction, its solid content will be 3x3x3=27 cubic feet. If a box of dry goods measured 4 feet long, 2 feet broad, and 3 feet thick, its solid content would be found by multiplying these measures together-thus, 4x 2x 3=24 cubic feet. A cord of wood measures 4 feet in depth, 4 feet in height, and 8 feet in width, and its solid content is 4× 4× 8=128 cubic feet. The units in cubic measure are, ton, cord, cubic yard, cubic foot, and cubic inch. Q. Repeat cubic measure. For what purpose used? What is a cubic inch? Cubic foot? Cubic yard? How is the solid content of a body ascertained? How many cubic inches does a cubic foot contain? Why? How many cubic feet does a cubic yard contain? Why? How would you ascertain the solid content of a box of goods? What would be the solid content of a box whose measures were 5 feet, 3 feet, and 8 feet? 8 yards, 9 yards, and 10 yards? What are the measures of a cord of wood? How many cubic feet in a cord of wood? Why? What are the units in cubic measure? 1=2=4=8=252 =1008-2016=8064 1= 31 126= 252=1008 1 = 4= 8= 32 1= 2= 8 1= 4 This measure is used for measuring liquids. The gallon contains 231 cubic inches. The units in this table are, tun, pipe, hogshead, barrel, gallon, quart, pint and gill. Q. Repeat liquid measure. How many cubic inches does the gallon contain? What are the units in this table? How many gallons in a barrel? In a hogshead? In a pipe? In a tun? Write the signs. By this table grain, fruits, roots, salt and coal, &c., are measured. Coal is sold in some of the States by the ton weight, and also by the chaldron, which contains 36 bushels. The bushel in common use in the United States is the English bushel, and measures 18 inches in diameter, and is 8 |