gannett] GEOGRAPHIC TABLES AND FORMULAS. 283 
meter = 39.37 inches. Log. 1.5951654. 
meter = 3.28083 feet. Log. 0.5159842. 
meter = 1.093611 yards. Log. 0.0388629. 
meter = 0.00062137 mile. Log. 6.7933502. 
kilometer = 3,281 feet = live-eighths mile, nearly. 
cubic meter = 35.314 cubic feet = 1.308 yards. 
liter = 1.0567 quarts. 
gram = 15.43 grains. 
kilogram = 2.2046 avoirdupois pounds. 
tonneau (metric ton) = 2,204.6 pounds. 
cubic meter per minute = 0.5886 second-foot. 
second-foot = 50 California miner's inches. 
second-foot = 40 Arizona miner's inches. 
second-foot = 449 gallons per minute. 
second-foot for one day = 1.9835 acre-feet. 
second-foot for one day = 646,272 United States gallons. 
second-foot = about one acre-inch per hour. 
acre-foot = 325,850 gallons. 
,000,000 gallons = 3.07 acre-feet. 
,000,000 cubic feet = 22.95 acre-feet. 
,000,000 gallons per 24 hours = 1.55 second-feet. 
horse power = 550 foot-pounds per second. 
horse power = 76 kilogranimeters per second. 
horse power = 746 watts. 
horse power = 1 second-foot water falling 8.8 feet. 
second-foot falling 10 feet = 1.135 horse power. 
foot per second = 1.077 kilometers per hour. 
foot per second = 0.68 miles per hour. 
inch = 2.54 centimeters. 
foot = 0.3048 meters. 
yard = 0.9144 meters. 
mile = 1.60935 kilometers. 
square yard = 0.836 square meters. 
acre = 0.4047 hectares. 
square mile = 259 hectares. 
square mile = 2.59 square kilometers. 
cubic foot = 0.0283 cubic meters. 
cubic yard = 0.7646 cubic meters. 
gallon = 3.7854 liters. 
pound = 0.4536 kilograms. 
{15 pounds per square inch. 
1 ton per square foot. 
1 kilo per square centimeter. 
Acceleration of gravity = 32.16 feet per second. 
To change miles to inches on map: 
Scale 1: 125000, 1 mile = 0.50688 inches. Log. = 9.7049052. 
Scale 1 : 90000, 1 mile = 0.70400 inches. Log. = 9.8475727. 
Scale 1:62500, 1 mile = 1.01376 inches. Log. = 0.0059352. 
Scale 1 : 45000, 1 mile = 1.40800 inches. Log. = 0.1486027. 
To change log. of meters to log. of inches on map: 
Scale 1:125000 add 6.4982552. 
Scale 1: 90000 add 6.6409228. 
Scale 1 : 62500 add 6. 7992853. 
Scale 1:45000 add 6.9419528. 
