62. Drewsen, J. C.: Nogle erfaringer angaaende vexeldrift forenet med brakfrugtavl og Sommerstaldfodring (1814) Christian Hasselbalch "J.C. Drewsen" (in
Heger og Hans Sønner', 1917. Lengnick, J.C.L.: Genealogier over adelige og borgerlige Familier, 2. samling II (Drewsen). Wikimedia Commons has media related
married Charlotte Frederikke Drewsen. She was the daughter of paper manufacturer Johan Drewsen (1715–1796) and Johan Drewsen (1715–1796). Their only child
medical doctor Frederik Wilhelm Galschiøt from Gelsingør as well as J. C. Drewsen from Strandmøllen. Bjørnsen was also involved in the excavation of Gurre
economic importance, indigo has been prepared by many methods. The Baeyer–Drewsen indigo synthesis dates back to 1882. It involves an aldol condensation