MK. (IIAIM.KS 1>K WATTKVIU.K ON FLAMI. SPECTRA 



157 



1 

 Salt used : Copper Nitrate. 



Here, as in the case of silver, only the lines of the arc spectrum which have au 

 intensity at least equal to 8 are given, notwithstanding the presence in the flame of 



certain lines which have an intnivit v less than H in the arc. 



The flame spectrum of copper is extremely difficult to study on account of the 

 presence of numerous hands, and the preceding table does not claim to be complete. 



