 Africa has a rich Bruchid fauna, many of them dependent on thorn trees and other indigenous leguminous plants.In the relaxed railway schedules of the time, he sometimes found opportunities to collect new species from thorn trees during halts.During this period he found time to edit Nature Notes (1924–1931) and become one of the first people to make a radio broadcast in South Africa, in which he talked on scorpions (1925).