Proceedings Am. Philos. Soc. Vol. lm. no. 211 



Plate XXXV 



Kaduceci t. 'A fror 



rhe True Atomtc Weights of the Chemical Eleme 

 .St, Louis and New York. iS9< 



,;.VtR NlTR/VTf. 5^ 



.V\K' 



Grammes of Silver useU . 

 'OO /SO 



K.g. 1. 



St AS' S unifies es. 



# 2 SI. 



