Emeritate

He was appointed for Yogyakarta (1904), Batavia (1905), and after his emeritate placed in Muntilan (1912), where he died on 1 March 1927. Wintjes SJ, Petrus born in Nijmegen on 8 November 1858, arrived in Batavia on 15 November 1891, and died on 11 October 1915 in Surabaya. He was pastor in Larantuka from 1892 and worked as pastor in Tomohon (Minahasa) from 1895 until 1913 after a very short period in Menado. From 1913 until 1915 he was pastor in Makassar.

Shortly after his arrival Dr. J. P. Lotsy took over the directorate of the Herbarium. Both institutions went very much their own way, but not before Janse had become the founder of our present Laboratory (1907-1908), which was the first modern Botanical Laboratory in our country. Professor Janse retired June 4th, 1930, while E. Th. Witte obtained his emeritate in the autumn of that year.

Throughout his professional career he was associated with the university of his native city: Assistant (1951-1965; with an interruption, 1961-1963, when he worked at the Gibbs Laboratories, Yale University, USA), Lecturer (1965), Assistant Professor (1965-1973), Full Professor at the Faculty of Science (1973-1992; Director of Science Education Department since 1976). After his retirement, he was awarded an emeritate professorship at the Department of Biological Engineering.