Referee's report by George Busk, on a paper 'Observations concerning transplantation of bone. Illustrated by a case of inter-human osseous transplantation, whereby over two-thirds of the shaft of a humerus was restored' by William Macewen Recommended for publication in the Proceedings of the Royal Society of London. The paper contains a new, and potentially valuable, scientific principle. Subject: Physiology [Published in the 'Proceedings of the Royal Society of London', 1881] 10 May 1881