A short reply to a pamphlet published at Philadelphia, entitled "A defence of the experiments to determine the comparative value of the principal varieties of fuel used in the United States, and also in Europe. Containing a correspondence with a committee of the American Academy of Arts and Sciences; their report and remarks thereon; and animadversions on the manner in which the trust confided to the academy by Count Rumford has been managed. By Marcus Bull, member of the American Philosophical Society, &c."