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IMPOSITIONS. Imposts, taxes, or contributions.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in classic literature ?
In his own case he felt that such an imposition would be peculiarly obnoxious, for had she not read that cursed Klondike correspondent's book?
'And imposition,' added Gowan, laughing; 'we won't leave out the imposition.
The operation, however, was somewhat slow, for it was necessary to overhaul and inspect every pack to prevent imposition, and the peltries had then to be conveyed in large boats, made of skins, to the ship, which was some little distance from the shore, standing off and on.