Appropriation of unascertained goods: assent plus deliverable appropriation causes transfer of property to the buyer. A sale of unascertained or future goods by description transfers property when goods of that description in a deliverable state are unconditionally appropriated to the contract with the buyer's assent, which may be express or implied. Delivery to a carrier or bailee for transmission without reservation of the right of disposal is deemed an unconditional appropriation, thereby effecting the transfer of property to the buyer.