ON THE METALLURGY OF NICKEL AND COBALT. 131 
manganese, this would be advantageous, as its chloride is not 
ee y hydrogen, and could be ‘separated from the nickel by 
was 
The acai ntineail cobaltic oxide was suspended in water and 
treated with chlorine at the boiling point, whilst small quantities 
of coer of syns was added until cobalt remained in solution. 
All the nickel was thus removed from the pre a se to the 
ca sbi ‘Soiniatiion also the cobalt added in excess. The 
same result could be obtained by digesting the prdciniletl with 
po ivinochieets acid, which would dissolve the nickel on y. 
tached is a scheme which shows the prises at a glance, with 
what complicated, it must be remembered that six metals hie to 
be sep: rated, and that two of a ee 
easealy: pasdeesty to observe that if the number of 
sehais scone is reduced, the treatment would be correspondingly 
shortened and simplified. 
