19. Sub-bailment, substitutional bailment and quasi-bailment.

Where a carrier who has the present right to the possession of goods delivers them to a subsidiary carrier in circumstances where the first carrier retains some possessory right to the goods, the subsidiary carrier becomes a sub-bailee of the original bailor1. The first carrier remains responsible for the goods as a bailee while they are in the sub-carrier's possession2; he is answerable for the defaults of the sub-carrier3 and is entitled to recover possession of the goods in the circumstances stipulated by the sub-bailment. The sub-carrier, in accepting possession of the goods, assumes the obligations of a bailee