Afterwards he became directing physician at his father's asylum for
Gemüts- und Nervenkranke at Bendorf. He published a large number of writings in the fields of
neurology and
psychiatry, which included articles in foreign publications such as
Tuke's "Dictionary of Psychological Medicine", as well as in German works such as
Penzoldt-
Stintzing's Handbuch der speciellen Therapie innerer Krankheiten. In 1878, he founded the neurological/psychiatric journal
Centralblatt für Nervenheilkunde, Psychiatrie und gerichtliche Psychopathologie. In 1895 with
William Thierry Preyer (1841–1897) and
Wilhelm Langenbruch (1860-1932), he founded
Die Handschrift, Blatter fur wissenschaftliche Schriftkunde und Graphologie, a scientific journal dealing with
palaeography and
graphology. In 1887, he described
cocaine as the third deadly "plague" for humanity, after
alcohol and
opium. It follows an article by
Sigmund Freud praising this substance as a remedy for morphine addiction. == Selected writings ==