916 Dr. R. D. Kleeman on the Attract/on Constant of a 



the secondary amines were found to be equal to 29'05 and 

 2-62 respectively. These values, it will be noticed, differ 

 considerably from those found for the primary amines. A 

 Bair agreement of the left-hand side of the above equation 



with the values of 



is also obtained in the case of the 



secondary amines. 



The chemical equation for the two tertiary amines in 

 Table VII. is the same as for the primary amines, and is 



T 

 therefore connected with - c by an equation similar to 



the above. It was found that (A fi -N-3H) = 32'61 and 

 (C + 2B | = 3*19. These values are very nearly equal to those 

 obtained For the secondary amines. 



The chemical equation for the anilines in Table VIII. is 

 N — 511 + «(< ! + 2\ 1 ), where a is an integer. The equation for 



T, 



2 \/»<i 



we would therefore expecl to be 



T, 



A 7 -(N-5H+a(C + 2H))=(A 7 -N + 5H)-a(C + 2H) = = ' , 



z, v m i 



The values of (A 7 -N+5H) and (C + 2H) were calculated 

 from the three anilines in the table by the method of least 

 squares and found to be equal to 39*79 and 2*94 respec- 

 tively, and these values then used to calculate the values of 



T 



The agreement between the values thus obtained 



and those obtained directly is very good. 

 Table VIII. 



Substance. 



T c . 



2 V Ml . 





(A 7 -N+5H)-a(C+2H). 



Aniline, C 6 H-N 



Ethyl aniline, C 8 H U N 



Methyl aniline, C-H 9 N 



698-6 

 698 4 

 7016 



3151 

 42-43 



30-97 



22-18 

 1646 



18 98 



2215 

 1627 

 1921 



The organic alkali pyridin, whose value of 



-= is given 



Z v m\ 



in Table VII., is usually classed with the tertiary amines* 



