AND RATIO OF THEIR ATOMIC WEIGHTS. 



109 



nitrogen, and of tlie oxygen fcjuivaleut to tlie rarlmii dioxide, all collected in a 

 sinjjle value in the last column. 



Table II. gives the weights of tlie hydrogen and oxygen apparentl}' taken fioni 

 the sources of the two, by simple difference of tlie means of all the observations 

 witli the balance in each case. Then follow the corrections for difference of vol- 

 umes in the two weighings, and foi' the residues found in the eudiometi'ic analysis; 

 after which are given the amounts actually cond)ined, with their ratio, and the 

 weight of the water formed, with the ratio of this (|nantity to the hydrogen used in 



forming it. 



TABLE I. 



The mean values for the atomic weight of oxygen are : 



From ratio of hydrogen and oxygen 15.8792, and 



From ratio of hydrogen and water 15.8785. 



If, then, no important source of error is detected in the pi'ocesses employed, 

 the atomic weight of oxygen i-eferred to hydrogen as unity is very nearly 



O = 15-879- 



