OF THE SPECIFIC GRAVITIES OF BODIES. 185 

 TJie Table concluded. 



LECT. 

 V. 



Take away the decimal points from the numbers in the 

 right-hand column, or (which is the same) multiply them 

 by 1000, and they will shew how many ounces avoirdu- 

 poise are contained in a cubic foot of each body. 



The use of the table of specific gravities will best ap- How to 



find out 



pear by an example. Suppose a body to be compound- the quan . 

 ed of gold and silver, and it is required to find thetity of 



i-z r i. j. i ^ j adultera- 



quantity ot each metal in the compound. 



tion in 



First, find the specific gravity of the compound, by metals - 

 weighing it in air and in water, and dividing its aerial 

 weight by what it loses thereof in water, the quotient will 

 shew its specific gravity, or how many times it is heavier 

 than its bulk of water. Then, subtract the specific gra- 



