264 Sir J. N. Lockyer and Mr. Baxandall. Enhanced [July 13, 



entirely absent from the arc spectrum, and that Kowland has identified 

 the solar line with the arc equivalent of the enhanced line. Seeing, 

 however, that most of these lines occur in stellar spectra, where hosts 

 of stronger arc lines are missing ; it will, perhaps, be more appropriate 

 to designate them as of a proto-metallic origin even in the sun. 



Solar Lines due either wholly or partially to Enhanced Lines of Ti, Fe, 



or Cr. 



