Lloyd, L. C, Ruttledge, R. F & Ruttledge, R. F / September 1959 – vol. 52, issue 9–311 personal friend to many of us but also a serious blow to ornithology and to international science. To many ornithologists he was mainly known through his pioneer studies in bird navigation--which were both original and penetrating--but he did equally outstanding work in several other fields. His doctor's thesis, on the function of the lateral line organs of the South African Clawed Frog, attracted ... This article is only available to subscribed users.To read more, please log in or purchase a subscription.