4G() GENERAL OBSERVATIONS. 



Lithia . . 2-25 or 2 water. 



Alumina . 2-25 - 2 - 



Protoxide of iron 4'5 - 4 - 



Protoxide of manganese 4-5 - 4 - 



Peroxide of mercury 2? 24 - 



Protoxide of uranium 27 - 24 - 



These comparisons might be carried a good 

 deal farther. A bare inspection of the tables at 

 the beginning of this chapter will enable the 

 reader to perceive the relations which exist be- 

 tween the atomic weights of different bodies, 

 Thus 



The atomic weight of carbon is 0*75 



That of phosphorus is 0-7 5 X 2 = 1-5 

 sodium 1-5X2= 3 



molybdenum 3 X 2 = 6 



platinum 6 X 2 = 12 



Or, in other words, the atom of 



Phosphorus is =2 carbon. 



Sodium = 4 - 



Molybdenum = 8 - 



Platinum = 1C - 



In like manner, the atom of 



Glucinum is = 3 carbon. 



Oxalic acid, -\ 



Protoxide of iron v = 6 



Protoxide of manganese J 

 Bismuth =12 



1C 



