A pile of wood 4 feet wide, 4 feet high, and 8 feet long, will make one cord. One foot in length of such a pile is sometimes called a cord foot. It contains 16 solid feet; consequently 8 cord feet make one cord. For what is Solid Measure used? What is a Cube? In a cubic yard how many cubic feet? In a cubic foot how many cubic inches? How many cubic feet of round timber make a ton? How many of hewn timber? How many cubic feet make a cord of wood? Explain what is meant by a cord foot. WINE MEASURE. 73. By this are measured all liquids except beer. 4= 1 qt. 8= 2= 1 gal. 32- 8= 4= 1 bar. 4032=1008= 504-126 =4=2=1 tun. 8064 2016-1008=252 =8=4=2=1 The wine gallon contains 231 cubic or solid inches. What liquids are measured by Wine Measure? Repeat the Table. How many cubic inches in the wine gallon? The beer gallon contains 282 cubic or solid inches. What is measured by Beer Measure? Repeat the Table. How many cubic inches in the beer gallon? DRY MEASURE. 75. By this are measured all dry wares, as grain, seeds, roots, fruits, salt, coal, sand, oysters, &c. By the English statute the dry gallon must contain 268 cubic or solid inches. The corn or Winchester bushel must contain 2150 cubic or solid inches. This measure is of a cylindric form, 8 inches deep and 181 inches in diameter. By an act of Parliament, which took effect the 1st of January, 1826, the imperial gallon of 277 274 cubic inches was adopted as the only gallon. This gallon was to consist of 10 pounds, avoirdupois, of distilled water. NOTE. If we divide 1728, the number of cubic inches in one cubic foot, by 277-274, the number of cubic inches in the gallon, we shall obtain 6-2321 for a quotient, which is the number of gallons in one cubic foot. Multiplying 6-2321 by 10, the number of pounds in one gallon, we obtain 62-321 for the number of avoirdupois pounds in one cubic foot of water. In one avoirdupois pound there are 7000 grains, and in 10 pounds there are 70000 grains. But 10 pounds is the weight of one gallon, which contains 277-274 cubic inches. Hence, dividing 70000 by 277-274, we find 252-458, the weight in grains of one cubic inch of water. According to the Revised Statutes of the state of New York, a cubic foot of distilled water, when estimated under prescribed circumstances, is to consist of 62 pounds, or 1000 ounces avoirdupois weight. Eight pounds of such water is to constitute the gallon for liquid measure, and ten pounds is to make the gallon for dry measure. What articles are measured by Dry Measure? Repeat the Table. How many cubic inches in the dry gallon, according to the English statute? How many cubic inches in a bushel ? What is the form and dimensions of the Winchester bushel measure? How many cubic inches in the English imperial gallon? The imperial gallon contains how many pounds of distilled water? One cubic foot of water weighs how many avoirdupois pounds? How many Troy pounds? One cubic inch of water weighs how many grains? How many pounds of water constitute the dry gallon, according to the Revised Statutes of New York? How many pounds make the liquid gallon? 3600= 86400 60= 1 da. 1440= 24= 1 wk. 604800 10080 168= 7 = 1 yr. 31557600-525960=8766=3651=52,5=1 The true length of the solar year is 365-242217 days, or about 365 da. 5 hr. 48 m. 47 sec. The civil year is also divided into 12 calendar months, If the year exceeded 365 days by 6 hours exactly, then once in four years these hours would amount to another day. Hence, once in four years, an additional day is given to the month of February; and such years are called Bissextile or Leap years. But, since this excess is not quite 6 hours, this rule of adding one day to February every fourth year is interrupted, and the centennial years, which are not divisible by 400, are regarded as common years.* Hence, any year, (except a centennial year,) which is divisible by 4, is a Leap year, or consists of 366 days. Centennial years which are divisible by 400 are regarded as Leap years; all others are considered as common years. 1796, 1804, 1808, 1812, 1816, 1820, 1824, 1828, 1832, 1836, 1840, were all Leap years. 1800, not being divisible by 400, was a common year of 365 days; the same may be said of 1900; but the year 2000, being divisible by 400, will be a Leap year. The number of days in the respective months may be recalled by recollecting the following versification: Thirty days hath September, Which has but twenty-eight in fine, Till Leap Year gives it twenty-nine. Repeat the Table for Time. What is the length of the solar year to the nearest second? What is the more accurate value in decimals? Into how many calendar months is the civil year divided? Repeat their names and the number of days belonging to each. How often in general is an additional day added to February? What are such years styled? Is the rule of counting every fourth year Leap year correct? Are centennial years, which are not divisible by 400, Leap years? Was 1800 a Leap year? Mention the next preceding and next following Leap year to 1800. It is very desirable to be able readily to determine the number of days from any particular date to any other date. For this purpose, we will give the following * There is still a further modification which takes place at the end of every 1000 years, which it is unnecessary to explain in this place, |