Letter from John Herapath, Cranford, to Sir Humphry Davy, President of the Royal Society, 23 Grosvenor Street Containing results of an experiment on the resulting temperatures of the mixtures of equal weights of water. Lists J. Moore Junior, 6 Castle Street, Bristol, and William King, Redcliffe Parade, Bristol, as his assistants for one of the experiments. 9 June 1821