164 



.MR. CHARLES DK WATTKVILLK ON FLA.MK SI'KCTKA. 



kindness in placing the resources of his splendid laboratory at my disposal and for the 

 advice he has given me during this work. My thanks are also due to Mr. II. S. 

 HUTTOX and Dr. HEMSALKCH for the help the}' have given ine. 



Addition, received August 29, 1904. 



IKON. 

 Flame Spectrum (Wave-lengths according to KAYSEB and RUNGE). 



Coincides with 1 Hinds. 



t E line. 



\ Coincides with a car) ion band. 



G line. 



