2.?4 THE MEDICINAL SPRINGS OF SOUTH AFRICA. 



SpECTRoscoric Examination of Solid Residue. 



Spark Spectrum 



ill Nature and Intensity of Lines. Element or Conipound 



Wave-lengths. Identified. 



67_1 Well defined, bright Lithium 670-8 



(->563 Well defined, but often faint Hydrogen(C) 656-3 



(S51-637-5 Faint band, only in concen- CaCl., 



trated solution 

 627-616 Bright band, continues very CaCl., 



faint to D line 

 621 Well defined and fairly bright, ? 



but only in concentrated 



solution 

 618 • Intensity and definition as 621 ? 



594 W^ell defined, but faint Nitrogen j^ggl 



589-6 1 Very bright and sharply de- 



589 j fined ' Sodium (D) 



569 Bright and well defined Sodium 5688 



5(.;j^.'> ■ J Sodium 5682 



1 Nitrogen 668 

 Bright bands, but edges ill-de- \ 

 556 ;:>-552-5 I fined. Figures give approx- , 



552 - 550 I imate positions of edges of j ^^^^'- 



bands ' 



554 Bright and well defined Barium 553-7 



519 Faint, but sharpiv defined ? 



=;w i\/r • 518-4) , 



oks .. ^^ ,, ^, Magnesium 517.3 [? 



\Lir •• '• " " Sodium c^jg !• 



4985 „ „ „ „ Sodium 498-3 



(Nitrogen 463-1 



""^' ^ " " " " (Lithium 460-2? 



446 So faint that position only Calcium 445 5 



approximately determined AA'i^ \ 



442-2 So faint that position only Calcium 4x9. c ' 



approximately determined 



423-3 Bright and well defined Calcium 422-7 



The residue, after precipitating iron, calcium, magnesium, 

 etc., was examined spectroscopically, and gave the follawing 

 lines in addition to those underlined in the preceding table: 



Spectruni 



in Element. 



Wave-lengths. 



615-5 Sodium 



615-5 

 616 1 



Hvdrogen (F) 486-2 

 4865 



