1904.] Lines of Titanium, etc., in Fraunlioferic Spectrum. 259 



4529*73, the titanium line represents. It is quite possible that the latter is a very 

 close double, and may account for both solar lines. 



[14.] 4534-14 (6), Ti-Co. Both the titanium and cobalt lines are well marked 

 in their respective spectra, and there is little doubt that the solar line is com- 

 pounded of the two. 



[15.] 4549-81 (6), Ti-Co. The titanium and cobalt lines are apparently 

 coincident, and as each is a strong line in its own spectrum, the solar line is 

 probably compounded of both in about equal proportion. 



[16.] 4764'H (4), Ti-Ni. The enhanced titanium line is a very weak one, and 

 the probability is that Ni is the chief origin of the solar line. 



Iron. 



