244 E. Nickles on Amorphous Phosphorus. 
Arr. XXI—On the urification of Amorphous Phosphorus ; by 
p 
M. Ernest NICKL 
phorus), is obtained by heating common phosphorus for some 
C., in an atmosphere 
of the sulphuret so that the ordinary phosphorus which ra 8 
| not 
red phosphorus, I have sought, by a study of the distinctive 
qualities of the two kinds of phosphorus to arrive at a safer and 
tion of chlorid of calcium of 88 to 40 B., answers well the pul 
pose,—the lighter ordinary phosphorus floats on the surface while 
the heavier red phosphorus remains below; and the former is 
readily taken up by a little sulphuret of carbon which dissolves 
it, 80 that the operation can be performed in a closed vessel. 
ies 
