Lectures on Political Economy. Now first published. To which is Prefixed, Part Third of the Outlines of Moral Philosophy, edited by Sir William Hamilton (Edinburgh, Thomas Constable, 1855-1856). http://oll.libertyfund.org/titles/2204,
Lectures given at the University of Edinburgh in the first decade of the 19th century. Volume 1 contains his lectures on population, productive and unproductive labour, and money. Volume 2 contains his lectures on free trade, taxation, the Poor Laws, education, and his theory of government.
The text is in the public domain.