This paper describes the preparation of bicyclic I and tricyclic I1 spiroquaternary salts and of some related 4.4'-bipiperidinium salts 111,. IV. In some instances one of the polymethylenimino groups in compounds of type I was replaced by a methyl-substituted polymethylenimino or a morpholino radical.(cH~),> &<(cH?), AI, x= 4, 5, or 6 y= 4, 5, 6, 7 or 8