Progress of exchange, 108-111.
Primitive form of, barter, 108.
Barter direct and roundabout, 109.
Limits of exchange, 111.
An element in the problem of population which Malthus has
neglected, 113.
Moral force of exchange, 116.
In consequence of exchange, our powers exceed our wants, ‹ib.›;
and the gain of each is the gain of all, 117.
Illusions to which exchange gives rise, 128-130.
Exchange imparts the idea of value, 135.