In 1905 he began an anthropological study of the Welsh people . He visited villages in all parts of Wales to make a survey and measurements, and give lectures. He reported on his progress to Section H (anthropology) of the British Association for the Advancement of Science in 1907 and (with T. Campbell James ) published a report in the journal Man , the first of nearly 30 articles by him on anthropology. His epochmaking paper on the geographical distribution of anthropological types in Wales appeared in 1916 . He published text books such as Human geography in Western Europe ( 1918 ), The Peoples of Europe ( 1922 ) and Races of England and Wales ( 1923 ), whilst his classic paper Régions Humanies which was published in Paris was widely translated. Between 1927 and 1956 he was joint author with H. J. E. Peake of the remarkable series of 10 vols. The corridors of time and in the meantime he published French life and its problems ( 1942 ) and A natural history of Man in Britain ( 1951 and 1959 ). He did much work for the teaching of geography in schools through his labours for the Geographical Association , of which he was secretary and also editor of its journal Geography for 30 years, 1917-47 . He became president of many learned bodies , including the Cambrian Archaeological Association in 1924 , while universities and scientific societies honoured him wherever he went; he was elected F.R.S. in 1936 . But it was as a teacher that he was best remembered, his approach being thought-provoking rather than overlaid with facts.

In 1910 he m. Hilda Mary Bishop of Guernsey , formerly a student at Aberystwyth , and they had 3 children. On retirement in 1944 he moved to London and later to 66 West Drive , Cheam , Surrey , where he d. 1 July 1969 .