 As historical background information is largely lacking in this regard, it is impossible to decide whether Schlemm's episode of grave robbing was a solitary instance or a more common method of acquiring bodies for anatomical instruction in early 19th-century Germany.Schlemm was known for his pathological studies on cadavers.He was the first to discover the corneal nerves of the eye, which he describes in his 1830 treatise named "Arteriarum capitis superficialum icon nova".