NICKEL SALTS. 



45 



At 5 there is almost complete transmission from X 2300 to X 7100. 

 The only effect of rise in temperature was to increase slightly the absorption 

 at the ultra-violet end of the spectrum and to weaken slightly the trans- 

 mission in the region X 4000. 



Nickel Chloride in Water; Conductivity and Dissociation. 



Salts of nickel like those of cobalt are somewhat hydrolyzed at the 

 higher temperatures and the higher dilutions. 



Nickel Nitrate in Water; Conductivity and Dissociation. 



