360 Prof. A. Griinwald on the Spectrum of Water-vapour 



Spectrum of 

 element b. 



Solar spectrum, 

 according to 



Spectrum of 

 element b. 



Solar spectrum, 

 according to 





Angstrom. 





Angstrom. 



5954 



5953-9 



5593-3 



5593 



5951-8 



5951-6 



55773 



5577-5 



5943 



5943-5 



5560-1 



55596 



5940 



5940 



5535-6 



5536-2 



5924-4 



5923-5 



5524-3 



5524-8 



5916 



5915-4 



5515-9 



5515-5 



5904 



5904-6 



5511 



5511-2 



5899-3 



5899 



5494-1 



5493-8 



5897 



5897 



5485-5 



5485-6 



5892-1 



5892-1 



5482-3 



5482-5 



5886 



j 5885-5 

 1 5886-5 



5479-5 



5479-9 



5455-1 



5454-8 



5874-5 



Chrom. 5874'9 





Chrom. 54547 





Helium-line. 



5417-2 



Chrom. 5417-9 



5855-4 



5855-2 



5412-6 



Chrom. 5412-4 



5833 



5832-5 



5403-7 



Chrom. 5403-1 



Several lines 





f 5808-2 





f 5403-0 to 

 1 5403-3 



from 





5807-2 





5808 



. 



5805-7 



53895 



5389-6 



to 





5804-4 



5376-4 



5376-5 



5805 



Several lines 

 from 

 5793 

 to 



5784 





5803-5 

 ( 5793 

 5792-4 



5364-0 

 5340-0 



f 536402^. 

 1 5364-2 

 Chrom. 5340-2 Fe.? 





5790-3 





"Mn.? 



• 



5786-8 



5326-5 



5327-0 Fe. 





5784-5 



5274-1 



5274-7 





5783-0 



5260-1 



5259-6 



5775 



'5774 



5199-9 



Chrom. 51997 



5752-5 



f 5752-2 

 1 5751-8 



5187-0 



Chrom. 5187-3 





Probably titanium. 



5694-1 



5694 







5618-2 



5618-0 





&c. 



Although the fundamental law I. was originally obtained 

 only for compounds of primary elements, it is important to 

 observe that it holds very nearly for compounds of compound 

 radicals, so far as these really behave as " atoms." A proof 

 of this, which is at the same time interesting and an important 

 confirmation of my theorem, is the fact that the wave-lengths 

 of all the hydrogen and oxygen rays, if multiplied by § (the 

 mean condensation-factor of H and O upon their combination 

 to H 2 0), are converted into the wave-lengths of corresponding 

 H 2 rays, at least so far as the H 2 spectrum is known, and 

 can be compared with them. 



(3) In the search for the reduction-factor of the primary 

 constituent a of hydrogen to the H 2 spectrum several remark- 

 able relationships were obtained. It appeared that the ray 

 4158, into which the chief ray H a 6562 of H is converted by 

 multiplication with 0'6336, is an hitherto unknown (as such) 

 ray of the water-spectrum, and that by means of the factor |^ 



