466 The Theory of Molecular Volumes, 



Nitro-?n-Xylene, C 8 H 9 N0 2 . 



C CH 3 V C 8 H 9 N0 2 183-7 



// \ less for Ring \J G . —15-0 



CH CH 



CH C-CH 3 \ 



168-7 

 less for struct... —2' 6 



\^—~-Kn) 166 ' 2 



^°» less for Vol. Anom. -22 



2A.V 164-0 



Observed . . . 164-7 (Neubeck). 



Again, compare Picolene, C r) H 4 (CH 3 )NH 2 , and Aniline 

 C 6 H 5 NH 2 : — 



CH 



/ \ 

 CH CH 





CH 



/ \ 

 CH CH 



II 1 



CH C- 



\ / 



N 



-CH 3 



II U-. 



CH C— NEL 

 \ S 

 CH 



C B H 7 N 





C 6 H 7 N 



VC 6 H 7 N 



125-8 

 .. -15-0 



VC 6 H 7 N 125-8 



less for Ring . 



less for Ring .. . —15*0 



2A.Y .... 



.. 110-8 



110-8 

 less Vol. Anom. —4*4 



Obs 111*5 



2A.V 1064 



Obs 106-4 



The contractions associated with the different groups m 

 combination with the C 6 H 5 nucleus are : — 



Hydroxyl -OH -1-5 



Cyanogen — CN —1*6 



— -CH 2 C1 -1-9 



— -PC1 2 -2-0 



Nitro -N0 2 -2-7 



Benzoyl -COCl -1*8 



Amino — NH 2 —4*4 



Carboxyl -COOH -2-8- 4'0 



