After attending secondary schools in Harderwijk, Arnhem and Amersfoort, Jacob de Hartogh became an apprentice pharmacist in Meppel. In 1879 he registered to study pharmacy in Amsterdam and graduated as an assistant pharmacist in 1881. He then studied medicine and sat for his medical finals in 1886. He attended clinics in Leipzig, Berlin, Munich and Vienna.
Jacob de Hartogh opened a practice at 84…