Triple flageolet

'Two boxwood pipes of which the right hand is the longer, held in a wide head joint provided with three shut-off keyes. The ivory mouthpiece is missing. The pipes are ivory mounted and the keys are of brass, octagonally shaped. The holes are marked as in 21/5, save that the left hand pipe has a seventh hole marked C#. [Those of 21/5 (Museum no. W.23-1925) are marked as follows: 'The holes in the left pipe are marked from the highest B,A,G,F,E,D ... The right pipe holes are marked G,F,E,D ...']. The keys on this pipe (left) are marked E flat (high up) and F natural (lower down the pipe). Those of the right-hand pipe are marked C, B and (low down) Low C key. The bass pipe, connected to the back of the head by a short tube, uses a boxwood cylinder 31 cm long and slightly tapered, with its widest bore, 24.5 mm, at the top end. At 14 cm from the top it is closed by a cork. The bottom end carries a boxwood bed, 14 cm long, for resting the instrument on the chair. The four keys on this pipe are marked D key, C key, B key and A key , and a short protruding tube is marked F natural.' - Anthony Baines: Catalogue of Musical Instruments in the Victoria and Albert Museum - Part II: Non-keyboard instruments (London, 1998), p. 90.