﻿230 



Prof. E. C. C. Bcily 



bands in the table has the following meaning : — The bands 

 marked A are those which Cremer found to be the strongest, 

 those marked B are those which according to Cremer form 

 the heads of the series, while those marked H are the bands 

 which Hartley considered to be the strongest. 



Tabi 



E IV.- 



-Toluene 



ibsorption (Cremer) . 



o A ia 







j 



Infra-r 



ed bands. 



Angstroms. 



1/X. 



Vx. 



Mean vx. 

















Oalc. 



Obs. 



ABH 2667 



3749 



298 





3'36/i 



3-34 ix 



2647 



3778 



269 



271 



3-69 





AH 2635 



3795 



252 



252 



3-97 



4 00 



A 2630 



3802 



245 





4-08 





A 2615 



3824 



223 



224 



4-46 





ABH 2603 



3842 



205 





4-88 





A 2600 



3846 



201 



201 



4-98 





2595 



3853 



194 





5-15 



510 



2589 



3862 



185 



186-5 



5-38 



5-35 



AH 2585 



3869 



178 





5-62 



5-51 



A 2580 



3877 



170 





5-88 



5-80 



2572 



3888 



159 





6-29 



6-20 



AB 2567 



3895 



152 





6-58 



f 6-45 

 1 6-70 



2565 



3899 



146 





6-85 



6-86 



2560 



3906 



141 





7-09 



7-25 



2554 



3915 



132 



131 



763 



7-70 



A 2550 



3922 



125 





8-00 



8-10 



2541 



3936 



111 





901 





2539 



3939 



108 



107-5 



9-35 



9-27 



AB 2536 



3943 



104 





9-61 



9 73 



H 2529 



3954 



93 





10-75 



10-60 



2524 



3961 



86 



86 



11-60 



11-15 



2522 



3965 



82 





12-20 



12-03 



2517 



3974 



73 





13-70 



13-78 



B2507 



3988 



59 



61 



16-39 





2477 



4037 



10 



10-5 



95-24 





H2471 



4047 













A 2464 



4058 



11 



10-5 



95 24 





2433 



4110 



63 



61 



1639 





BH 2420 



4133 



86 



86 



11-60 



1115 



B 2407 



4154 



107 



1075 



9 30 



9-27 



B2394 



4177 



130 



131 



j 7-63 



7-70 



2359 



4235 



188 



186-5 



5-38 



5-35 



2354 



4248 



201 



201 



4-98 





2341 



4272 



225 



224 



j 4-46 





2326 



4299 



252 



252 



! 3-97 



4-00 



2315 

 J 



4320 



273 



271 



1 3-69 





Only two of Coblentz's toluene bands are not accounted 

 for, namely, those at \ = 8'40 and 8'53 (jl. Now Cremer in 

 his series of lines notes that certain members are absent, and 

 one of these missing lines should have a wave-length of 

 \ = 2545 Angstroms and a frequency of 1/X = 3929. Thi 



is 



gives a value of '',,= 11.8, which corresponds to a band in the 



