“ Opinion .—The question raised by this action is, whether the defenders are bound to repair and maintain, as part of their undertaking, the quays and other works constructed by them under the authority of Acts of Parliament for the Erskine Ferry, of which the pursuer is the proprietor. The maintenance of these works against ordinary wear and tear would appear to carry a very trifling expenditure. But from their position in the river they are exposed to injury in consequence of vessels coming violently against them, and breaking or tearing away the stonework of the quays. They have, in fact, been materially damaged from this cause; and the pursuer maintains that the burden of repairing the damage must fall upon the defenders as part of the burden of general maintenance. The defenders, on the other hand, allege that the ferry quays are no part of their undertaking, that no obligation of maintenance is imposed upon them by their statutes, and that if the quays have been damaged by no fault of theirs, the loss must fall upon the pursuer, to whom they belong, according to the maxim res perit domino .