sentences:  Here he spent some time at the Bolus Herbarium.In 1905 he visited Rhodesia with the British Association, collecting at the Victoria Falls and the Matopos.In 1907, in the company of Prof. HHW Pearson, he undertook a trip to South West Africa to study "Welwitschia", making stops at Port Nolloth, Lüderitz Bay, Swakopmund, Welwitsch Station and following the Swakop River to Haikamkab.