The President and Council of the Royal Society adjudged, for the Year 1804, the Medal on Sir Godfrey Copley's Donation, to Smithson Tennant, Esq. F. R. S. for his various Chemical Discoveries, communicated to the Society, and printed in several Volumes of the Transactions. And they adjudged the Gold and Silver Medals, on the Donation of Benjamin Count of Rumford, to Mr. John Leslie of Largo, for his Experiments on Heat, published in his Work, entitled an Experimental Inquiry into the Nature and Propagation of Heat.