CONVERSION OF MEASURES OF WEIGHT. XXVll 



2. Change 13*^ 37"^ 22!/ mean solar time into sidereal time. 



Given mean time = 13'' 37"" 22^7 



Correction for 13^ = + 2™ 8!i3 



37"" = + 6.08 



22!7 = + 0.06 



+ 2 14.27 + 2 14.3 



Corresponding sidereal time = I3 39 37-0 



CONVERSION OF MEASURES OF WEIGHT. 



TABLE 28. 



Table 28. Conversion of avoirdupois pounds and ounces into kilograms. 



The comparisons of July, 1893, made by the International Bureau of 

 Weights and Measures between the Imperial standard pound and the 

 "kilogram prototype" resulted in the relation: 



I pound avoirdupois = 453.592 427 7 grams. 



For the conversion of pounds, Table 28 gives the argument for every 

 tenth of a pound up to 9.9, and the tabular conversion values to ten-thou- 

 sandths of a kilogram. 



For the conversion of ounces, the argument is given for every tenth 

 of an ounce up to 15.9, and the tabular values to ten-thousandths of a kilo- 

 gram. 



TABLE 29. 



Table 29. Conversion of kilograms into avoirdupois pounds and ounces. 



From the above relation between the pound and the kilogram, 



I kilogram = 2.204622 avoirdupois pounds. 

 = 35.274 avoirdupois ounces. 



The table gives the value to thousandths of a pound of every tenth of 

 a kilogram up to 9.9; the values of tenths of a kilogram in ounces to four 

 decimals; and the values of hundredths of a kilogram in pounds and ounces 

 to three and two decimals respectively. 



Table 30. Conversion of grains into grams. tables 30, 31. 



Table 31 . Conversion of grams into grains. 



From the above relation between the pound and the kilogram, 



I gram = 15.432356 grains. 

 I grain = 0.06479892 gram. 



Table 30 gives to ten-thousandths of a gram the value of every grain 

 from I to 99, and also the conversion of tenths and hundredths of a grain 

 for convenience in interpolating. 



