of fats, and the balance is water, how many pounds of water are there in 1000 lbs. of fresh cow-peas?

10. In buying redtop grass seed at 13.7 cts. a pound when only 77 lbs. in every 100 lbs. is good live seed, what is the price paid per pound for good seed?

11. With redtop seed at 8.54 cts. a pound containing 11 lbs. of good seed in every 100 lbs., what is the price per pound of the good seed?

12. With blue-grass seed at 14 cts. a pound containing 60 lbs. of good seed in every 100 lbs., what is the price per pound of the good seed?

13. With blue-grass seed at 10 cts. a pound containing .4 lb. of good live seed to the hundred pounds, what is the price per pound of the good seed?

14. With timothy grass seed containing 96 lbs. per hundred of good seed bought at $1.60 a bushel, what is the price paid per bushel for good seed?

15. If a cow produces 7446 lbs. of milk in a year and 1 lb. of milk produces .059 lb. of butter, how many pounds of butter does the cow produce, and what is it worth at 27 cts. a pound?

16. How much does the butter cost per pound in value of feed, if she ate 12.4 cts. worth each day?

17. Another cow gave 3400 lbs. of milk, and each pound of milk produced .0406 lb. of butter. Did this cow make a profit with butter at 27 cts. if the cost of feed was 11.2 cts. a day?

18. If 1 pound of cotton-seed meal contains .0618 lb. of nitrogen, .018 lb. of potash, and .028 lb. of phosphoric

acid, how much of each of these fertilizing materials does a ton, or 2000 lbs., of cotton-seed meal contain? What is the ton of cotton-seed meal worth for fertilizing at 18 cts. a pound for nitrogen, 4 cts. for phosphoric acid, and 5 cts. for potash?

19. If 1 pound of cotton-seed contains .031 lb. of nitrogen, .013 lb. of phosphoric acid, .012 lb. of potash, what is the ton of seed worth at the same prices for fertilizing materials as in problem 18?

20. The following are the plant-food constituents which a farmer sells from his farm in the products named:

Valuing nitrogen at 18 cts. a pound, phosphoric acid at 4 cts. a pound, and potash at 5 cts. a pound, what is the value of the fertilizing materials removed from the farm by the sale of each of these products in the amounts indicated?

COMPOSITION OF FOODS

21. If for 10 cts. I can purchase .064 lb. of protein in tenderloin steak, how much protein do I obtain in 50 cts. worth of tenderloin?

22. If for 10 cts. I can purchase .135 lb. of protein in

round steak, in which do I get most protein for the money, in tenderloin or in round steak?

How much more?

23. If for 10 cts. I can purchase .03 lb. of protein in oysters, how much protein do I obtain in 70 cts. worth of oysters? In which of the above articles do I obtain most protein for my money?

24. In the following dairy products these amounts of protein may be purchased for 10 cts.: butter .004 lb., cheese .163 lb., whole milk .110 lb., skimmed milk .203 lb., cream .034 lb. How much protein in each may I obtain for 75 cts.?

LEGUMES

25. If each pound of vetch hay contains .17 lb. of nitrogen, how many pounds of nitrogen are there in 2879 lbs. of vetch hay? Each pound of alfalfa contains .143 lb. of nitrogen. How many pounds are there in 2879 lbs. of alfalfa? Each pound of red clover contains .123 lb. of

nitrogen. How many pounds are there in 2879 lb. of red clover? Each pound of cow-pea hay contains .166 lb. of nitrogen. How many pounds are there in 2879 lbs. of cowpea hay? What is the value of the nitrogen in each of the above instances at 19 cts. a pound?

26. If 5953 lbs. of velvet-bean hay are grown on an acre, and in every pound of this hay there is .0221 lb. of nitrogen, how many pounds of nitrogen are gathered by the crop, and what is it worth at 18 cts. a pound?

27. If there is .024 lb. of nitrogen in 1 lb. of cow-pea hay, and 3000 lbs. of hay are made on an acre, what will be the value of the nitrogen collected by the crop, with nitrogen worth 18 cts. a pound, if for each pound of nitrogen in the hay there is left in the stubble and roots .3 lb. of nitrogen?

28. Crown Jewel potatoes dug in Virginia 80 days after planting yielded 170 bus., dug at 93 days after planting, the same variety gave 255 bus. What was the average increase daily during the additional period?

29. Beauty of Hebron potatoes dug in Virginia at 101 days after planting showed an increase of 136 bus. over those dug 80 days after planting. What was the average increase per day during the additional time?

30. Using nitrate of soda on clover, 300 lbs. to the acre, at $2.66 a hundred pounds, the yield was increased from 2.09 to 2.8 tons per acre, valued at $9 a ton in the field. Did the use of the fertilizer pay? gain or loss per acre?

What was the

COMMON FRACTIONS

EXERCISE 71. — ORAL

1. How many weeks in a month? One week is equal to what part of a month? Two weeks are equal to what part of a month? Three weeks are equal to what part of a month?

2. One week is equal to what part of two months? One week is equal to what part of three months?

3. Two weeks are equal to what part of two months? Two weeks are equal to what part of three months?

4. Three weeks are equal to what part of two months? Three weeks are equal to what part of three months?

5. If a unit is divided into two equal parts, what is one part called? If a unit is divided into three equal parts, what is one part called? If into four, six, ten?

127. One or more of the equal parts of a unit is called a Fraction.

128. A fraction is expressed by two numbers, one written above the other, with a line between them; e.g., onefourth is expressed thus, 1.

129. Read the following:,, 3, 16, 10, 20. What part of these fractions shows the number of parts into which the unit is divided?

The number which shows into how many parts a unit