Specific Gravity of Solutions of Sodium Carbonate at 15° TABLE I.-PRODUCTS OF THE DISTILLATION OF COAL. METRIC SYSTEM OF WEIGHTS AND MEASURES. THE METRIC SYSTEM has been adopted by Mexico, Brazil, Chile, Peru, etc., and except Russia and Great Britain, where it is permissive, by all Various names of the preceding 3ystems are, however, frequently used: In Germany, Dean nations. kilogram-1 pound; in Switzerland, 3-10 of a metre 1 foot, etc. If the first letters of the prefixes deka, hecto, kilo, myria, from the Greek, and deci, centi,mili, from the Latin, are used in preference to our plain English, 10, 100, etc., it is best to employ capital letters for the multiples and small letters for the subdivisions, to avoid ambiguities in abbreviations: 1 dekametre or 10 metres 1 dm.; 1 decimetre or 1-10 of a metre 1 dm. The METRE, unit of length, is nearly the ten-millionth part of a quadrant of a meridian, of the distance between Equator and Pole. The International Standard Metre is, practically, nothing else but a length defined by the distance between two lines on a platinum-iridium bar at 00 Centigrade, deposited at the International Bureau of Weights and Measures, Paris, France. The LITRE, unit of capacity, is derived from the weight of one kilogram pure water at greatest density, a cube whose edge is one-tenth of a metre and, therefore, the one-thousandth part of a metric ton. The GRAM, unit of weight, is a cube of pure water at greatest density, whose edge is one-hundredth of a metre, and, therefore, the one-thousandth part of a kilogram, and the one-millionth part of a metric ton. The Metric System was legalized in the United States on July 28, 1866, when Congress enacted as follows: The tables in the schedule hereto annexed shall be recognized in the construction of contracts, and in all legal proceedings, as establishing, in terms of the weights and measures now in use in the United States, the equivalents of the weights and measures expressed therein in terms of the metric system, and the tables may lawfully be used for computing, determining, and expressing in customary weights and measures the weights and measures of the metric system. " The following are the tables annexed to the above: Kilolitre or stere. Litre ......... 1,000 1 cubic metre....... 1.308 cubic yards.... 100 1-10 of a cubic metre. 10 10 cubic decimetres.......... 11 cubic decimetre.............. Decilitre............................... 1-10 1-10 of a cubic decimetre. 6.1022 cubic inches.... Centilitre..... 1-100 10 cubic centimetres......... 0.6102 cubic inch.. Millilitre............................... 1-10001 cubic centimetre............. 0.061 cubic inch.. Pages 76 to 79 are, by permission, taken from the World Almanac of 1916. TABLES FOR THE CONVERSION OF METRIC WEIGHTS AND MEASURES INTO CUSTOMARY UNITED STATES EQUIVALENTS AND THE REVERSE. From the legal equivalents are deduced the following tables for converting United States weights and measures: METRIC TO CUSTOMARY. CUSTOMARY TO METRIC. Me Me LINEAR MEASURE. Kilome- Ins. CenYards Me- Miles Kilotres-Ins. Metres Feet. tres Yards. tres-Miles. timetres Feet-Metres. tres. 139.37 1 3.28083 1 1.0936111 0.62137 1 2.54 1 0.304801 1.0.914402 1 2 78.74 2 6.56167 2 2.187222 2-1. 24274 2 5.08 2 0.609601 2-1,828804 2 3 118.11 3 9.842503-3.280833 31.86411 3 7.62 | 3-0.914402 | 3-2.743205 3 4 157.48 413.12333 4 4.374444 42. 48548 4 10.16 4-1.219202 4-3.657607 4 5 196,85 5 16.40417 5 5.468056 5 3.10685 5 12.70 51 5240035-4, 572009 5 8.04674 6236.22 6 19 68500 66.5616676 3.72822 275.59 7 22,96583 7-7.655278 7 4.34959 8 314.968-26, 24667 8 8.748989 8 4.97096 9354,33 19 29.52750 9 9.842500 9-5, 59233 SQUARE MEASURE, metres. 1.60935 3.21869 4,82804 6.43739 6-15 246 1.828804 6 5.486411 6 9.65608 7 17.78 7.2.133604 76.400813 7-11, 26543 8-20.32 8 2.4384058-7.315215 8 12.87478 9-22,869 2.743205 | 9–8, 229616 9—14, 48412 Pages 76 to 79 are, by permission, taken from the World Almanac of 1916. Gallons Litres. |