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Royal Collection © Her Majesty Queen Elizabeth II
Recto: The tongue, and the production of the voice. Verso: A schematic map of Milan, notes on the voice, etc.
Recto: L ½ of oral & nasal cavities with pharynx; 3 studies of lips; detailed oblique view of the tongue; notes on phonation & the action of the tongue in speech; lists of syllables with notes on their pronunciation. Verso: Plan of Milan; a note on the articulation of the voice; a diagrammatic drawing of a flame; a wheel with weights & a note on movement; the ground-plan of a building & diagram of a parade of carriages, with a note to it