Image 4 of 15:  Undated, circa 1920
Richard B. Goldschmidt (1878-1958), zoologist and geneticist; and an important teacher, colleague, and friend of Emil Witschi. Goldschmidt was Richard Hertwig's assistant during Witschi's studies in Munich. In 1922, as Director of the Kaiser Wilhelm Institute in Biology in Berlin, Goldschmidt hired Witschi as a research fellow at the Institute.