510 



Mr. C. Scott Garrett on the Infra-red and 



constants, 0*2, 2'8, 4, 4*3, of which the product of the first 

 three multiplied by 10 gives a wave-number difference 

 occurring in one ultra-violet band in sulphur dioxide, the 

 product of another three multiplied by 10 gives a wave- 

 number difference in the second ultra-violet band, while 

 the product of all four determines the infra-red spectrum. 

 Finally, the centre of the first ultra-violet band of sulphur 

 dioxide is a multiple of the product of all four constants. 

 On these grounds Baly's theory would lead to the expec- 

 tation that the four basis constants, 0*2, 2*8, 4, 4*3, must 

 rhave their origin in the oxygen and sulphur atoms. That 

 this expectation is justified is shown by the fact that 4*3 is 

 characteristic of the sulphur atom, since the whole of the 

 infra-red spectrum of hydrogen sulphide can be expressed 

 in terms of this constant, and further by the fact that the 

 infra-red bands of oxygen can be expressed in terms of the 

 product of 4 and 2*8, namely 11*2, as is set forth in 

 Tables V. and VI. 



Table V. 

 Infra-red Absorption of Hydrogen Sulphide. 



Factors. 



Wave 

 Numbers. 



Wave-lengths 

 Calc. 



Wave-lengths 

 Obs* 



Differences 

 Obs. -Calc. 



4-3x21 



90-3 



11-08 



10-95 



-0-13 



43x22 



94-6 



1057 



10-6 



+0-03 



4-3x23 



98-9 



1011 



10-08 



-003 



4-3x25 



107-5 



9-30 



9-65 



+0-35 



4-3x27 



116-1 



8-61 



. 8-46 



-015 



4-3x30 



1290 



7-75 



7-78 



+0-03 



4-3x33 



141-9 



7-05 



7-12 



+007 



4-3x41 



176-3 



5-67 



5-6 



-0-07 



43x55 



236-5 



4-23 



4-24 



+0-01 



Table VI. 

 Infra-red Absorption of Oxygen, 



Factors. 



Wave 

 Numbers. 



Wave-lengths 

 Calc. 



Wave-lengths 

 Obs* 



Differences 

 Obs. -Calc. 



11-2x19 

 11-2x28 



212-8 

 3136 



4-7 

 3-19 



4-7 

 3-2 



o-oo 



+0-01 



* Coblentz, loc. cit. 



