The regent of Karanganyar with his family and Dr Melchior Treub

gbr.1. The regent of Karanganyar with his family and Dr Melchior Treub (3 August 1904). gbr.2. Melchior Treub with Netty and Louise Treub, Buitenzorg, June 15, 1904. gbr.3. Melchior Treub (December 26, 1851 – October 3, 1910) was a Dutch botanist. He worked at the Bogor Botanical Gardens in Buitenzorg on the island of Java, south of Batavia, Dutch East Indies, gaining renown for his work on tropic