36 PROCEEDINGS OP THE AMERICAN ACADEMY 



Synthesis op 



No. Wt. in gram of Wt. dissolved Total weight Wt. of red Sb^Sg 



Sb taken. from balls. of Sb used. dried at 180°"C. 



Mean of 5 Determinations 



Mean of last 5 Determinations .... .... 



13. D. 2.0056 0.3787 2.3843 3.3369 



Mean of the 13 Determinations .... .... 



* Large residue of carbon, small sublimate, 

 t Small residue of carbon, large sublimate. 

 X Weight of black sulphide not foimd. 

 § Both residue and sublimate small. 



