Morrow — Spectra of Manganese. Lead, Copper, and Lithium. 283 



COPPKR. 



The standard solution of copper chloride was prepared by dissolving 

 2-6570 grammes of copper chloride in distilled water and making the solution 

 accurately up to 1 litre. 



The solid did not appear to volatilize very much when the current was 



