Letter from Captain [Frank] Creagh-Osborne, Admiralty Compass Observatory, Ditton Park, Langley, Bucks, to The Secretary, The Royal Society Informs he has discovered a possible "terella" while reorganising a museum and seeks information about it, noting that neither the British nor the South Kensington Museums nor Oxford have provided any. The writer references Gilbert's "De Magnete," which mentions a terella presented to the Royal Society by Charles I, and inquires if the Royal Society still has it for comparison purposes. 21 April 1923