Tractatus quatuor anatomici; T. quintus....H.   Magdeburg: Sumptibus Orphanatrophei, 1734-5.

Two works in one. 4to. [xii], 84; [vi], 64, [6] With 6 folding copperplates by Cassebohm's student Petche; engraved initials, head and tail pieces. Original wrappers lightly frayed. An uncut copy. $2,250.00

First editions of an important work on the anatomy and physiology of the ear. The first four tracts discuss the temporal bone, the external ear, the tympanic cavity, and the contents of the tympanic cavity. The fifth describes the labyrinth and the sixth deals with the monstrous formation of an ear found in a human fetus.

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