116 



REPORT — 1903. 



Lithium (Spark Spectrum). 



Eder and Valenta, ' Denkschr. kais. Akad. Wissensch. Wien,' Ixvii. 1898. 

 Exner and Hasohek, ' Sitzungsber. kais. Akad. Wissensch. Wien, cvi. 1897. 



Lithium (Oxyhydrogen Flame Spectrum). 

 Ramage, ' Proc. Royal Soc' Ixxi. 1902, p. 164. 



Thallium (Ultra-violet Spark Spectrum). 



Exner and Haschek, ' Sitzungsber. kais. Akad. Wissensch. Wien,' cviii. 1899. 



Eder and Valenta, ' Denkschr. kais. Akad. Wissensch. Wien,' Ixviii. 1899. 



Cornu, ' C. R.,' c. 1885, p. 1181. 



Wave-length 



Exner and 

 Haschek 



Eder and 

 Valenta 



Intensity 



and 

 Character 



3775-89 

 3529-54 



J9-3.-. 



18-42 

 .H456-50 

 3229-90 



20r 



10 



20r 

 In 

 2n 

 2b 



Previous 

 Observations 



3775-87 K. and R. 

 3529-58 

 19-39 



3229-88 



