Note:  Do not rely on this information. It is very old.

Sale

Sale, the transfer of property from one person to another in consideration of a price or recompense in value - in other words, for a valuable consideration. The contract for sale in English law is a real contract, or in the nature of such, some tender or transfer being required to make the sale complete. There is this striking difference between the English and Roman law in the contract for sale, namely, that in the English law the property in a specific article (or in a non-specific artic1e or unascertained bulk so soon as the same becomes specific or ascertained) passes to and rests in the purchaser even before delivery, the vendor retaining only a lien on it while in his possession for the price; whereas in Roman law such property does not pass to the purchaser until after payment of the price and also delivery of the article (Benjamin on Sales).