﻿New Method for Mapping the Spectra of Metals. 385 

 Plate 169. Zinc. 







Kayser 





Element. 



Plate 169. 



and 

 Runge. 



Remarks. 



(Ghost) 



4828-26 





Fifth order. 



>> 



4824-21 





Fourth „ 



11 



4821-10 





Third 



i> 



4817-41 





Second „ 





4814-18 





First „ 



Zinc 



4810-79 



4810-71 



Intensity 1. 

 First order. 



(Ghost) 



4807-36 





ii 



4804-11 





Second „ 





4800-84 





Third 





4797-30 





Fourth „ 



>> 



4793-99 





Fifth 



»> 



4738-70 





Fifth 





4735-52 





Fourth „ 





4732-26 





Third „ 



>> 



4728-89 





Second „ 



„ 



4725-70 





First „ 



Zinc 



4722-34 



4722-26 



Intensity 1. 

 First order. 



(Ghost) 



4719-03 







4715-79 





Second „ 



>> 



4712-67 





Third 



„ 



4709-36 





Fourth ,, 



» 



4705-98 





Fifth 



„ 



4693-27 





Fourth „ 



„ 



4686-85 





Second „ 



„ 



4683-50 





First 



Zinc 



4680-38 



4680-38 



Intensity 1. 



(Ghost) 



467704 





First order. 



„ 



4673-97 





Second ,, 





4670-66 





Third 





4667-52 





Fourth „ 





4664-26 





Fifth 



Zinc 



463006 



4630-06 



Intensity 4. 



Intensity 6 : Third order line. 

 >> )> » 



Zinc 



(4613-96) 

 (4608-29) 



3075-99 



Zinc 



307219 



Zinc 



(4553-83) 



3035-93 



>> >» s> 





Out of 98 lines measured on the copper plate, it will be 

 noticed that we are unable to identify 41. They are not to 

 be found among Kayser and Runge's values for Ag, Au, Sn, 

 Pb, As, Sb, Mg, Ca, Zn, Sr, Cd, Ba, Hg, Li, Na, K, Rb, Cs, 

 or Fe. 



It is probable that these 41 lines belong to impurities whose 

 wave-lengths have not yet been determined (or, at least, not 

 published) with an accuracy sufficient for identification. It 

 is not impossible, however, that some of these are new copper 

 lines. We have found very little difference between " com- 



Phil. Mag. S. 5. Vol. 38. No. 233. Oct. 1894. 2 D 



