6 Messrs Garse and Laby, A relation between the velocity 
Ion 
Ionic formula 
Trieth}d propyl ammonium 
(C 2 H 5 ) 3 C 3 H 7 N* 
Triethylisobutyl ,, 
(C 2 H 5 ) 3 C 4 H fl N * 
Triethylisoamyl ,, 
(C 2 H s ) 3 C 5 H n N' 
Diisoamyl ammonium 
(C 6 H n ) 2 H 2 N* 
Organic ammonium cations of the homologues of aniline 
asy. ra-Xylidine C 6 H 3 (CH 3 ) 2 H 3 N ’ . . 
Dimethylaniline 
C 6 H 5 (CH 3 ) 2 HN ' 
i// Cumidine 
1:3:5 : 6 C 6 H 2 (CH 3 ) 3 NH 3 
Trimethylphenyl ammonium 
(CH 3 ) 3 C fi H 5 N- 
Dimethylethylpbenyl ammonium 
(CH 3 ) 2 C 2 H 5 C e H 5 N ' 
Trimethyl a naphthyl „ 
CN(CH 3 ) s : CH 
• vn.rT . 
^CH : CH 
Trimethyl /3 naphthyl „ 
CH : CNfCH,), 
'•,H^ . 
Organic ammonium cations of the homologues of pyridine and quinoline 
Piperidine 
C,H n HN * 
Pyridine methylium 
CH, . N : CH . CH 
CH : CH . CH 
