Cornelis Andries Backer (1874–1963) was a Dutch botanist and pteridologist. He was born on 18 September 1874 in Oudenbosch and died on 22 February 1963 at Heemstede, The Netherlands. He stayed thirty years in the Dutch East Indies and did research on plant taxonomy on the islands of Java and Madura.
Hermann Werner Siemens (August 20, 1891 (Charlottenberg) -1969) was a German dermatologist who first described multiple skin diseases and was one of the inventors of the twin study. Siemens' work in twin studies is influential in modern genetics and is used to address the environmental and genetic impacts upon traits. Siemens was involved in racial hygiene and affiliated with the Nazi Party.
Cornelis Gijsbert Gerrit Jan van Steenis (31 October 1901 – 14 May 1986) was a Dutch botanist. Van Steenis wrote many publications on the flora of the Maritime Southeast Asia region, among others about taxonomy and plant geography. Besides his expeditions in the Malay region, he also traveled in Australia and New Zealand.
Cornelis Jacobus (Cor) Gorter (14 August 1907, Utrecht – 30 March 1980, Leiden) was a Dutch experimental and theoretical physicist. Among other work, he discovered paramagnetic relaxation and was a pioneer in low temperature physics.
Gerardus Johannes Petrus Josephus Bolland (9 June 1854, Groningen – 11 February 1922, Leiden), also known as G.J.P.J. Bolland, was a Dutch autodidact, linguist, philosopher, biblical scholar, and lecturer. An excellent orator, he gave extremely well attended public lectures in Amsterdam, Rotterdam, The Hague, Utrecht, Delft, Groningen, Nijmegen and Belgium.
He became an expert in German idealism, being especially interested in the works of Eduard von Hartmann and Georg Wilhelm Friedrich Hegel. He began researching the formation of Christianity in 1891, and was extremely literate in religious history. He was associated with the Dutch radical school.
He effected a revival in Hegelianism in the Netherlands around 1900 by arranging a new edition of Hegel’s works, and stimulating a renewal of interest in philosophy in the Netherlands. He had a quirky style in his use of the Dutch language causing linguist J.A. Dèr Mouw, among others, to criticise him sharply.
Willem Jozef Andreas Jonckbloet (6 July 1817, The Hague – 19 October 1885, Wiesbaden) was a Dutch historian, best known for work on medieval poetry.
From 1835 he was a student at the University of Leiden. After pursuing medicine and law, he turned to Low German literature. From 1847 at Deventer, he became a professor at Leiden in 1878.
In 1855 he became member of the Royal Netherlands Academy of Arts and Sciences.