Letter from Alexander Muirhead, FRS, Elmers End, Beckenham, Kent, to James Mackenzie Davidson Hopes Mackenzie Davidson will do whatever he thinks best with regards to his new instruments, however, notes that the best plan would be to place it in the hands of a good firm in America. Informs Mackenzie Davidson that the brine baths of Droitwich have made his hip feel easier and freer from pain. He has been instructed by the medical man of Aberdeen, Roden, to use crutches for at least twelve months. Notes that he and [Oliver] Lodge are approving Marconi's latest patent because it is indentical with one of theirs. 13 September 1899