The colonial controversy : containing a refutation of the calumnies of the anticolonists, the state of Hayti, Sierra Leone, India, China, Cochin China, Java, &c., &c., the production of sugar, &c., and the state of the free and slave labourers in those countries, fully considered in a series of letters addressed to the earl of Liverpool, with a supplementary letter to Mr. Macaulay / by James Macqueen.