Table I. — Absorption of Sulphur Dioxide in the Extreme - 

 Ultra-violet Region. 



Wave-lengths in 

 o 

 Angstroms. 



Wave 



Numbers. 



Wave-number 

 Differences. 



Molecular 

 Extinctions. 



2334 



4303 



32 





2307 



4335 



22(1) 

 34 





2295 



4357 





2277 



4391 



36 





2259 



4427 



36 





2241 



4463 



31 





2225 



4494 



39 



180-3 



2206 



4533 



34 



551-1 



2189 



4567 



36 





2172 



4603 



38 





2155 



4641 



36 





2140 



4677 



34 





2123 



4711 



36 





2107 



4747 







Mean Wave-number Difference = 35*1 (2). 



Table II. — Absorption of Sulphur Dioxide in the Near 

 Ultra-violet Region. 



Wave-lengths in 







Angstroms. 



Wave 

 Numbers. 



Wave-number 

 Differences. 



Molecular 

 Extinctions. 



3182 



3143 



24 



40-8 



3157 



3167 



22 



521 



3136 

 3112 



3189 

 3213 



24 

 23 



104-7 

 180-3 



3090 

 3066 



3236 

 3261 



25 

 26 



226 8 

 315-0 



3042 



3287 



22 



354-6 



3022 



3309 



26 



354-6 



2999 

 2978 



3335 

 3358 



23 



20 



402-2 

 402-2 



2961 



8378 



20 (Optical 



Centre) 402-2 



2943 



3398 



22 



402-2 



2924 



3420 



21 



402-2 



2906 



£441 



24 



354-6 



2886 

 2869 



3465 

 3485 



20 

 21 



354-6 

 354-6 



2852 



3506 



23 



354-6 



2833 



3529 



20 



354-6 



2818 



3549 



20 



354-6 



2802 



3569 





3150 



Mean W 



ave-nuin 



ber Difference = 22-4 (1). 



