6. Purchased at one time, 16 tons, 3 qr. 21 lb. of hay; at another, 9 tons, 16 cwt. 2 qr. 17 lb.; and at another, 27 tons, 13 cwt. 1 qr. 17 lb. How much did I purchase? Ans. 53 tons, 10 cwt. 3 qr. 27 lb.

7. Bought 36 cwt. 3 qr. 24 lb. of wool; but finding the demand large, I made three successive purchases, at each of which I bought 45 cwt. 2 qr. 16 lb. What was the amount of my purchases? Ans. 173 cwt. 3 qr. 16 lb.

4. A physician purchased the following quantities of medicine, at three different times; viz. 1 pound, 4 ounces, 5 drams; 3 pounds, 11 ounces, 6 drams, 2 scruples, 15 gr.; and 7 drams, 1 scruple, and 12 grains; what was their whole weight? Ans. 5 lb. 53. 33. 19. 7 gr.

5. Bought at one purchase, 32 yd. 3 qr.; at another, 16 yd. 2 qr. 2 na.; and 24 yd. 1 qr. at another. How many yards did I purchase? Ans. 73 yd. 2 qr. 2 na.

How

6. Bought of one man, 12 ells English, 4 qr. 3 na.; and of each of two others, 27 ells English, 3 qr. and 3 na. many Ells did I purchase? Ans. 68 E.E. 2 qr. 1 na.

7. Received from France 12 ells, 4 qr. of broadcloth; 17 ells, 5 qr. 3 na. of cassimere; and 19 ells, 2 qr. 3 na. of silks. How many ells were there in the three articles purchased? Ans. 50 ells. 0 qr. 2 na.

Ex. 1. What is the amount of 23 £. 11 d.; 13 £. 17 s. 3 qr.; 16 s. 8 d.; and 11 d. 3 qr.? Ans. 37 £. 15 s. 7 d. 2 qr. 2. Bought the following quantities of oil; viz. 12 gal. 3 qt.; 2 hhd. 42 gal. 2 qt. 1 pt.; and 13 hhd. 56 gal. What was the whole amount? Ans. 16 hhd. 48 gal. 1 qt. 1 pt. 3. Add together 250 £. 18 s. 9 d. 3 qr.; 16 £. 7 s. 2 qr.; 21 £. 19 s. 3 d.; 18 s. 6d. ; and 36 £. Ans. 326 £. 3 s. 7 d.

1 qr. 4. What is the amount of 5 cwt. 3 qr. 27 lb. ; 2 qr. 29 lb.; 12 cwt. 1 qr. 17 lb.; and 36 cwt. 16 lb. Ans. 55 cwt. 1 qr. 5 lb.

5. Bought at one time, 7 bu. 3 pk. of wheat; at another, 9 bu. 1 pk. and had previously in each of two bins, 6 bu. and 3 pk. What was the whole amount? Ans. 30 bu. 2 pk.

6. Sold one cow for 10 £. 15 s. 6 d.; another for 6 £. 19 s.

11 d.; and a colt for 12 £. 6 s. 4 d. How much did they all amount to? Ans. 30 £. 1 s. 9 d.

7. Bought four casks of wine, of which the first contained 42 gal. 2 qt. 1 pt.; the second, 65 gal. 1 pt.; the third, 50 gal. 3 qt.; and the fourth, 55 gal. 1 qt. 1 pt. How many gallons did I purchase? Ans. 213 gal. 3 qt. 1 pt.

8. Purchased three pieces of land. The first contained 17 acres, 1 rood, and 35 rods; the second, 36 acres, 2 roods, 21 rods; and the third, 46 acres and 37 rods. How much land did I purchase? Ans. 100 acres, 1 rood, 13 rods.

QUESTIONS.-In what ratio do simple numbers increase? What is the peculiarity of Compound Numbers? Where are the ratios of increase and decrease of compound numbers given? Why do you carry for 10 in simple numbers? Why do you carry for 4, 12, and 20, in the table of English money? What peculiarity noticeable in writing compound numbers? What only is necessary in writing simple numbers? How are compound numbers known? How must each denomination therefore be written ? What is Compound Addition? How are numbers to be written? What is the rule? What is the note following the rule?

COMPOUND SUBTRACTION.

The scholar has now become acquainted with Compound Addition; and he was previously acquainted with the Simple rules. He needs, therefore, to be informed only, that Compound Subtraction sustains the same relation to Compound Addition, that Simple Subtraction does to Simple Addition. It is the subtracting of numbers of different denominations.

In this rule, instead of constantly borrowing 10, when the lower figure is the larger, he must borrow as many units as are required of the denomination he is subtracting, to make a unit of the next higher denomination; that is, when it becomes necessary to borrow a number in subtracting farthings, 4 is the number always required; in subtracting pence, 12 is the number; and in shillings, 20; and in like manner in other denominations.

RULE.-Place the less quantity under the greater, so that each denomination shall stand under one of its own name or kind. Begin at the right, and proceed in all respects as in