Quantum-theory and Rotation-Energy of Molecules. 11 

 Table II. 







\ 



(Rubens). 



I 



X (Eucken) 





\(v. 



Bahr). 









385 





n. 



A = 1-73x1012 



n. 



A =0-75x1012 



398 









1 



400 



240 



1 250 









2 



200 



172 



170 





1 



173 







124 



I 128 









3 



133 



109 



109 



103 



1 





4 



100 



917 



91-5 





2 



87 







790 



817 



79 



i 





5 



80-0 



690 ] 



70<> 















08-7 



66 







6 



666 



63-7 J 



61-5 













540 



559 



58 



3 



57-8 



7 



57-2 



49-7 1 



49-3 



50 







8 



500 



48-2 j 



474 













45-2 



447 









9 



44-5 



41-5 



419 





4 



433 







39 3 



38 6 









10 



400 



35-8 



— 









11 



365 



333 



— 





5 



347 



12 



33-3 



304 



— 









13 



30-7 



23-4 



-- 





6 



23-9 



14 



28-5 



27'2 



— 









15 



267 



25-3 





17-5 

 157 

 143 

 13-3 

 124 

 11-6 



7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 



24-8 

 216 

 193 

 17-3 

 15-8 

 14-4 

 133 

 124 

 11*6 



16 



250 







109 



u; 



108 







Fig. 3 snows energy-curves for rays that have passed 

 through a 30 cm. long tube filled with air or hydrochloric 

 acid at pressures of 380 and 7b'0 mm. respectively. Fig. 4 

 gives the absorption-curves calculated from fig. 3. The 

 continuous curves have been obtained by use of a quartz 

 prism ; the dotted curve is taken from Burmeister's work* 

 and is obtained with a fluorite prism, which in this part of 

 the spectrum has about one-third the dispersion of quartz. 

 As may be seen, this curve has quite the same generai 

 character as, e. g., the carbon monoxide curve in fio-. 1. 



The rotation wave-lengths (V) calculated from fio-. '4 are 

 inserted in Table III. as are also the correspondino- 

 frequencies. ° 



* W. Burmeister, /. c. 



