He wrote besides a number of disquisitions upon single treatises. To this was added an appendix of the Cambridge sermons and disquisitions of Peter Baro. Of the three volumes of "Political Disquisitions", the third is the most widely referenced. In 1774, Burgh wrote his most popular work, "Political Disquisitions". In the time of Strabo, topographical disquisitions discussed the identity of sites mentioned by Homer.