a great fair held every year for buying and selling goods. Public marts, or places of buying and selling, such as markets and fairs, with the tolls thereunto belonging, can only be set up by virtue of the king's grant, or by long and immemorial usage and prescription, which presupposes such a grant. The limitation of these public retorts, to such time and place as may be most convenient for the neighbourhood, forms a part of economics, or domestic policy; which, considering the kingdom as a large family, and the king as the master of it, he has clearly a right to dispose and order as he pleases.