Cotton from the field consists of seed and fiber together. At the cotton gin the seed is separated from the fiber, or lint,

which is pressed into

bales, covered with cloth called bagging, and bound with heavy iron wire called ties. Before long-distance shipment the bales are compressed to fill a still smaller space. The weight of a bale is spoken of as "gross," when it includes bagging and ties, "net," when the lint alone is considered.

46. A bale of cotton before compression occupies about 45 cubic feet of space. When compressed for shipment it is about 54 in. by 27 in. by 16 in. How much less space does a compressed bale occupy?

47. How many compressed bales of 13 cu. ft. can be put into the space that would be occupied by 3 uncompressed bales? 48. The average gross weight of a bale of American cotton is 500 pounds. If the weight of bagging and ties is 5% of the gross weight, what is the net weight of a bale?

49. The average gross weights of bales in some other cotton countries are :

India, 400 pounds

Brazil, 230 pounds

Peru, 182 pounds

Egypt, 735 pounds

What per cent of the American 500-pound bale is each of these bales?

50. If it takes 1500 pounds of seed cotton from the field to produce a bale in which the lint weighs 480 pounds, what per cent of the seed cotton is lint? What per cent is seed?

51. If 20 acres produce 12,960 pounds of seed cotton, and 331% of it is lint, how many bales of 480 pounds net does it make?

52. What per cent of a bale does one acre produce?

53. How long would it take a laborer to pick enough seed cotton to make a bale of lint of this weight, if he picks 120 pounds of seed cotton per day?

54. If it takes the cotton gin 1 hr. 2 min. 30 sec. to separate 500 pounds of lint from the seed, how long does it take to gin one pound?

55. At the rate of 2 pounds of lint in 15 seconds how long does it take to gin a bale of 480 pounds net?

56. On 16 acres a cotton farmer raised 720 pounds of seed cotton per acre. After giving 25% of his crop to the owner for rent, how much did he have left?

57. It cost $51.84 to have the entire crop of 11,520 lb. of cotton picked. How much did each picker receive per 100 pounds?

58. If 66% of the farmer's 8640 pounds of cotton consisted of seed, how many bushels of seed of 30 pounds each did he have? how many pounds of lint?

59. When the cotton was ginned and pressed, each bale of lint weighed 500 pounds, including 20 pounds of bagging and ties. How many such bales did the 2880 pounds of lint make? 60. How much did the farmer receive, if he sold the 5760 lb. of seed at 12 per bushel (30 lb.) and the 6 bales of lint (500 lb. each) at 61 per pound, gross weight?

61. Find his gain, if the total expense of raising and marketing the crop was 75% of the $218.04 received.

62. If the farmer had paid his rent in money, $31 an acre for 16 acres, and had sold the 4000 lb. gross of cotton @ 6¢ and the 256 bu. of seed @ 124, how much would he then have gained, the total expense aside from rent amounting to $167.53?

63. A New Orleans cotton buyer paid $1062.50 to ship 425 bales, averaging 500 pounds gross, to New York. Find the freight rate per hun

dredweight.

64. At that time the freight rate to Liverpool was only 35¢ per 100 pounds. How

much less would it have cost to ship the same cotton to Liverpool?

65. A car load of

cotton in the ordinary square bales consisted of 55 bales, averaging 500 pounds each in weight. How many pounds of cotton did the car carry?

66. Recently a large car load of cotton in the more compact round bales consisted of 160 bales, averaging 4281 pounds each in weight. Find the weight of cotton carried by the car.

67. In a recent year the world's output of cotton was equal to 18,000,000 bales of 500 pounds net. Find the number of such bales contributed by each of the following countries according to the per cents given:

Egypt, 64%

Brazil, 13%

United States, 75%

68. If Great Britain used 3,600,000 of these bales, the continent of Europe 5,100,000, and the United States 4,320,000, what per cent of the whole crop did each consume?

SIMPLE INTEREST

494. The sum paid for the use of money is called interest.

495. The money for the use of which interest is paid is called the principal.

496. The sum of the principal and the interest is called the

amount.

497. Interest is reckoned as a certain per cent of the principal, and the rate of interest is the per cent paid for the use of the principal for one year.

498. In ordinary interest calculations, a month is regarded as 30 days, and a year as 12 months, or 360 days.

METHOD BY ALIQUOT PARTS

499. 1. If a man pays $6 for the use of $100 for 1 year, how much must he pay for the use of $100 for 2 yr.? for 3 yr.?

How much must he pay for the use of $100 for 6 months, or of a year? for 2 mo., or of 6 mo.? for 30 days, or 1 of 2 mo.? for 15 days, or of 30 days?

2. When 6% is paid for the use of the principal for 1 year, what per cent of the principal is paid for its use for 2 yr. ? for 6 mo.? for 2 mo. ? for 6 da. ?

3. Find the interest on $400 at 5% for 1 year; for 3 yr. ; for 6 mo. ; for 3 yr. 6 mo.

4. What is the interest at 4% on $600 for 1 year? for 2 months? for 15 days? for 1 yr. 2 mo. 15 da. ?

WRITTEN EXERCISES

500. 1. Find the interest on $325 for 3 years at 5%.

The interest equals the principal multiplied by the rate, multi plied by the number expressing the time in years.

8. Find the interest on $629 for 1 yr. 8 mo. at 7%.

of int. for 6 mo. =

NOTE. It is sufficiently accurate to express final results to the nearest cent and intermediate results to the nearest mill.

Find, by aliquot parts, the interest on

9. $5000 for 1 yr. 6 mo. at 3%

10. $5000 for 1 yr. 9 mo. at 4%

11. $3225 from Aug. 1, 1906, to Nov. 1, 1907, at 4% 12. $4175 from May 1, 1906, to Nov. 1, 1909, at 31%