MISCELIvANKOUS TABI^ES. _ Ivii 



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

 a kilogramme up to 9.9 ; the values of tenths of kilogrammes in ounces to 

 four decimals ; and the values of hundredths of a kilogramme in pounds and 

 ounces to three and two decimals respectively, 



TABLES 89, 90. 



Table 89. Co7iversion of grains into grammes. 

 Table 90. Coyiversion of graiiimes into grains. 



From the above relation between the pound and the kilogramme, 



I gramme = 15.432356 grains. 



I grain = 0.06479892 gramme. 



Table 89 gives to ten-thousandths of a gramme the value of every 

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

 grain for convenience in interpolating. 



Table 90 gives to hundredths of a grain the value of every tenth of a 

 gramme from o.i to 9.9, and the value of every gramme from i to 99. The 

 values of hundredths and thousandths of a gramme are added as an aid to 

 interpolation. 



The computation of these two tables has been furnished by Professor 

 William Libbey, who has ijsed the relation, i gramme = 15.432 531 grains. 

 This value is practically identical with the relation above adopted, dififering 

 from it by about i part in 3,000,000. 



TABLE 91. 



Table 91. Conversion of units of magnetic intensity. 



This table gives the conversion factors from i to 9 for converting Eng- 

 lish measures of magnetic intensity into C. G. S. measures, and vice versa. 



The English unit of magnetic intensity is the force which, acting for 

 I second on a unit of magnetism associated with a mass of i grain, produces 

 a velocity of i foot per second. 



The C. G. S. unit of magnetic intensity is the dyne — the force which, 

 acting upon one gramme for i second, generates a velocity of i centimetre 

 per second. The Gaussian unit of magnetic intensity, which has been 

 extensively used, is a force which, acting upon a mass of i milligramme for 

 I second, generates a velocity of i millimetre per second. 



By using the dimensions of magnetic intensity [M-/Iv- TJ, the inter- 

 conversion of these units is easily made. 



C. G. S. unit = ^ loooM Q^ussian units 

 \ loL 



I. 

 10 Gaussian units 



C. G. S. unit= |l5-432356M ^^^^^^-^ ^nits 

 \/ .03280833 L 



.03280833 



21.6882 English units 



