GANNETT.] GEOGRAPHIC TABLES AND FORMULAB. 309 
1 meter = 39.37 inches. Log. 1.5951654. 
1 meter = 3.28083 feet. Log. 0.5159842. 
1 meter = 1.093611 yards. Log. 0.0388629. 
1 meter = 0.00062137 mile. Log. 6.7933502. 
1 kilometer = 3,281 feet = five-eighths mile, nearly. 
1 cubic meter = 35.314 cubic feet = 1.308 yards. 
1 liter = 1.0567 quarts. 
1 gram'= 15.43 grains. 
1 kilogram = 2.2046 avoirdupois pounds. 
1 tonneau (metric ton) = 2,204.6 pounds. 
1 cubic meter per minute = 0.5886 second-foot. 
1 second-foot = 50 California miner's inches. 
1 second-foot = 40 Arizona miner's inches. 
1 second-foot = 449 gallons per minute. 
1 second-foot for one day = 1.9835 acre-feet. 
1 second-foot for one day = 646,272 United States gallons. 
1 second-foot = about one acre-inch per hour. 
1 acre-foot = 325,850 gallons. 
1,000,000 gallons = 3.07 acre-feet. 
1,000,000 cubic feet = 22.95 acre-feet. 
1,000,000 gallons per 24 hours = 1.5^second-feet. 
1 horse power = 550 foot-pounds pef second. 
1 horse power = 76 kilogrammeters per second. 
1 horse powe-r = 746 watts. 
1 horse power = 1 second-foot water falling 8.8 feet. 
1 second-foot falling 10 feet = 1.135 horse power. 
1 foot per second = 1.077 kilometers per hour. 
1 foot per second = 0.68 miles per hour. 
1 inch = 2.54 centimeters. 
1 foot = 0.3048 meters. 
1 yard = 0.9144 meters. 
1 mile = 1.60935 kilometers. 
1 square yard = 0.836 square meters. 
1 acre = 0.4047 hectares. 
1 square mile = 259 hectares. 
1 square mile = 2.59 square kilometers. 
1 (uibic foot = 0.0283 cubic meters. 
1 cubic yard = 0.7646 cul)ic meters. 
1 gallon =3.7854 liters. 
1 pound = 0.453() kilogi-uins. 
( 15 pounds per S(|uare incli. 
1 atmosphere = a] )()ut I 1 ton ])('r square foot. 
[ 1 kilo i)er square centimett^r. 
Acceleration of giavity = 32.16 feet ])er second. 
To change miles to irH'hes on map: 
Scale 1: 125000, 1 mile = 0.50()S8 inches. 
Scale 1 : 90000, I mi](> ^ 0. 70400 inches. 
Scale 1 : 62500, 1 mile ^ 1 .01376 inches. 
Scale 1 :-J5000, 1 mile = 1.40800 inches. 
To (thange log. of meters to log. of inches on 
Scale 1 : 125000 add 6.4982552. 
Scale 1:90000 add ().6409228. 
Scale 1 : 62500 add (>. 7992853. 
Scale 1:45000 add (19419528. 
Log. 
= 9.7049052. 
Log. 
= 9.8475727, 
Log. 
= 0.0059352, 
Log. 
= 0.1486027, 
nuip: 
