1760] Essays 45 find their way out of it, the manufactures of the country where they go will infallibly find their way into it. They who understand the economy and principles of manufactures, know that it is impossible to estab- lish them in places not populous; and, even in those that are populous, hardly possible to establish them to the prejudice of the places already in possession of them. Several attempts have been made in France and Spain, countenanced by government, to draw from us, and establish in those countries, our hard- ware and woollen manufactures, but without success. The reasons are various. A manufacture is part of a great system of commerce, which takes in con- veniences of various kinds: methods of providing materials of all sorts, machines for expediting and facilitating labor, all the channels of correspondence for vending the wares, the credit and confidence necessary to found and support this correspondence, the mutual aid of different artisans, and a thousand other particulars which time and long experience have gradually established. A part of such a sys- tem cannot support itself without the whole; and before the whole can be obtained the part perishes. Manufactures, where they are in perfection, are car- ried on by multiplicity of hands, each of which is expert only in his own part; no one of them a master of the whole; and, if by any means spirited away to a foreign country, he is lost without his fellows. Then it is a matter of the extremest difficulty to persuade a complete set of workmen, skilled in all parts of a manufactory, to leave their country to-