TABLE. 144 square inches (sq. in.) are 1 square foot, sq. ft. • 9square feet “ 1 square yard, sq. yd. 304 square yards, or 2724 sq. ft. “ 1 square rod, sq. rd. 160 square rods « 1 acre, A. 640 acres “ 1 square mile, or section, sq. mi. An acre contains 43,560 square feet. A rood (R.) is 40 square rods. CAPACITY MEASURES. 172. Liquid Measures are used in measuring liquids. 173. Dry Measures are used in measuring grain, roots, fruit, etc. TABLES. Liquid. Dry. 4 gills (gi.) are 1 pint, pt. 2 pints (pt.) are 1 quart, qt. 2 pints « 1 quart, qt. 1 8 quarts " 1 peck, pk. 4 quarts “ 1 gallon, gal. I 4 pecks “ i bushel, bu. The gallon contains 231 cubic inches ; 4 quarts dry measure, 2684 cubic inches ; and the bushel, 2150.42 cubic inches. A hogshead as a measure is 63 gallons ; and a barrel, 31) gallons. 26. How many gallons in 41 qt.? In 53 qt.? In 60 pt. ? In 120 gi. ? In 89 qt. ? 27. How many pecks in 48 quarts ? How many bushels ? 28. Change to larger measures, 100 pt. of milk; 64 qt. of nuts; 84 gi. of oil. 29. What is a six-gallon can of milk worth at 5 cents a quart? 30. I take a pint of milk at night and a quart in the morning. What is my weekly milk-bill at 7 cents a quart? 31. What cost 62 bu. of potatoes at $1 a bushel ? 32. I burn a pint of kerosene every night. What will a 2 weeks' supply cost me at 20 cents a gallon ? 33. Bought nuts for $2 a bushel, and sold them for 10 cents a quart. How much did I gain on 5 bushels ? WEIGHTS. 174. Troy Weights are used in weighing gold, silver, and jewels. 175. Avoirdupois Weights are used in weighing all common articles. TABLES. Avoirdupois. 24 grains (gr.) are 1 pennyweight. / 16 ounces (oz.) are 1 pound, lb. 20 pwt. “ 1 ounce, oz. 100 pounds • 1 cental, ctl.. 12 ounces “ 1 pound, lb. 2000 pounds « 1 ton, T. 1. The long ton of 2240 avoirdupois pounds is used at customhouses, and in weighing coal at the mines. 2. A pound avoirdupois is equal to 7000 grains, so that 192 ounces avoirdupois are equal to 170 ounces troy, and 144 pounds avoirdupois are equal to 175 pounds troy. A hundred-weight (cwt.) is the same as the cental. 176. Time is a measured portion of duration. TABLE. 60 seconds (sec.) are 1 minute, min. « 1 hour, h. « 1 day, d. 365 days • 1 common year, y. 366 days 6 i leap year, 1. y. Also, 7 days are 1 week, wk. 12 calendar months (mo.) “ 1 year, y. 100 years • 1 century. 1. The Civil Day begins and ends at 12 o'clock, midnight. 2. The Calendar Months, and the number of days in each, are, — 1. January, -31 days. 1 7. July, 31 days.. 2. February, 28 or 29" 8. August, 3. March, 9. September, 30 " 4. April, 10. October, 5. May, 11. November, 30 € 6. June, 12. December 31 3. The Solar Year is 365 d. 5 h. 48 min. 49.7 sec., or very nearly 3654 days. The fraction in 4 years amounts to nearly a day. Hence, When the number of any year is divisible by 4 and not by 100, and when it is divisible by 400, the month of February has 29 days, and the year is called a leap year. ORAL EXERCISES. 42. How many minutes in 2 h.? In 3} h. ? Inh. ? In 3 h. 20 min. ? 43. How many hours in 210 min.? In 3 d.? In wk. ? 44. How many days in 96 h.? In 60 h. ? 45. How many minutes from 10.25 A. M. to 11.45 A. M. ? From 11.50 A. M to 1.35 P. M. ? 46. What part of a minute is 42 sec. ? What part of an hour is 48 min. ? 47. How many days from Mar. 31 to May 31 ? From June 7 to July 15 ? From Oct. 19 to Nov. 12 ? 48. How old is a child on July 4, 1883, who was born May 31, 1880 ? 49. If a three weeks' vacation begins June 21, when does it end ? If it ends Oct. 9, when does it begin ? 50. What day was 25 days before Mar. 4, 1880 ? Sixty days after ? 51. How long from Thursday noon to 4.30 P. M. of Friday ? 52. How long is the night when the sun sets at 7.35 and rises at 4.30 ? 53. Name the next six leap years. 54. What century is this? In what century did 1620 come ? |