seem equally reasonable to lay a particular tax upon a particular branch of trade, in order to defray the extraordinary expense of protecting that branch.

The protection of trade in general has always been considered as essential to the defence of the commonwealth, and, upon that account, a necessary part of the duty of the executive power. The collection and application of the general duties of customs, therefore, have always been left to that power. But the protection of any particular branch of trade is a part of the general protection of trade; a part, therefore, of the duty of that power; and if nations always acted consistently, the particular duties levied for the purposes of such particular protection should always have been left equally to its disposal. But in this respect, as well as in many others, nations have