The traites, which correspond to our customs, divide the kingdom into three great parts; first, the provinces subject to the tariff of which are called the provinces of the five great farms, and under which are comprehended Picardy, Normandy, and the greater part of the interior provinces of the kingdom; secondly, the provinces subject to the tariff of which are called the provinces reckoned foreign, and under which are comprehended the greater part of the frontier provinces; and, thirdly, those provinces which are said to be treated as foreign, or which, because they are allowed a free commerce with foreign countries, are, in their commerce with the other provinces of France, subjected to the same duties as other foreign countries.