From 1925 to 1940 Gisolf was Director of the Hogere Burger School (HBS) (Dutch secondary education) in Bandung in Indonesia.
He wrote an article in a German Journal, the "Mineralogische und Petrografische Mitteilungen", called "Zur graphischen Darstellung von Gesteinsanalysen".
The Singapore-based "Straits" newspaper mentioned on 4 June 1924 that Gisolf had found out that a certain mineral, supposed to be iron-ore, showed signs of high radium activity.
In 1919, he joined the "Bataafsch Genootschap der Proefondervindelijke Wijsbegeerte", as recorded in its memorial "Herdenking van het 150-jarig bestaan", dated 17 August 1919.
Remarkably, in 1932 he supported the formation of a student association "Spes patriae" which formulated first thoughts about an independent Indonesian state, in close collaboration with the Kingdom of the Netherlands.
[9] A unique publication was a scientific analysis of the results of the school where he was the director, entitled "De resultaten van het onderwijs".