Dr D. F. van Slooten †

On March 7, 1953 the Rijksherbarium suffered a severe loss by the sudden death of its honorary co-operator Dr. D. F. van Slooten, the wellknown specialist particularly of Dipterocarpaceae. To honour his memory the following lines may serve as an obituary note. Dirk Fok van Slooten was born in Amersfoort on 17 March 1891. In the local gymnasium his biology teacher was the later Prof. A. Pulle, who was again his master at the University of Utrecht where he was matriculated in 1910. His doctor’s thesis of 1919 was dealing with the Combretaceae and Flacourtiaceae of the Dutch East Indies.