320 



REPORT — 1895. 



Sodium. 



OXYHYDROGEN (FLAME SPECTEUM). 



Hartley : ' Phil. Trans.' cLxxxv. 177 (1894). 



Potassium. 



OXYHYDROGEN (FlAME SpECTRUM). 



Hartley : ' Phil. Trans.' clxxxv. 178 (1894). 



A strong continuous spectrum from 4610 to 3440. 



Cadmium yieldsone line only (the least refrangible of the triplets at cadmium 17) 

 3261-17. Oscillation frequency"30654-4. 



Zinc and zinc oxide give nothing but a continuous spectrum. 



Calcium Fluoride. 



OXYHYDROGEX (FLAME SpECTRUM). 



Hartley : 'Phil. Trans.' clxxxv. 179 (1894). 



Wave-leu s'tli 



i Intensity and 

 Character 



6213-5 

 6009 

 5739 \ 

 5583-5 I 

 5583-5 

 5503 



b 

 b 



lb 



Oscillation 

 Frequency 

 ia ^"acuo 



16090 

 16638 

 f 17420 

 1 17905 

 I 17905 

 ] 1S1G6 



Wave-length 



5352-5 \ 

 5316 I 

 .5316 j 

 5303-5 I 

 4231* 



Intensity and 

 Character 



b 

 4s 



* Probably Kayser and Kunge's Calcium line 4226-91. 



Oscillation 

 Frequency 

 in Vacuo 



ri8678 

 I 18807 

 f 18807 

 1 18850 

 23630 



