58 THE ATOMIC WEIGHTS. 



A. 



96.356 

 96.345 

 96.362 



Mean, 96.3543, dz .OO33 



96.356 

 96.452 



Mean, 96.354, ± .0013 



96.358 

 96.363 



Mean, 96.3605, ± .0017 



D. 



96.346 

 96.384 

 96.361 

 96.377 



Mean, 96.367, ±z .0057 



Dumas* employed barium chloride prepared from pure 

 barium nitrate, and took the extra precaution of fusing the 

 salt at a red heat in a current of dry hydrochloric acid gas. 

 Three series of experiments upon three samples of chloride 

 gave the following results : 



.0068 



* Ann. Chem. Pliarm., 113, 22. i860. Ann. Chim. Phys., (3,) 55, 129. 



