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region; he published two papers in scientific journals on this topic, andhis contribution to the Geological Survey Memoir on the Okehamptondistrict has been very fully acknowledged.

He leaves a widow, to whom we offer our sincere condolences.D.G.A.W.

JANET MITCHELL MARR HARRISON, M.A., B.SC., an Honorary Member of theAssociation since 1967, was born at Newburgh, Fife, on 15 January 1893,and died in hospital at Oxford on 19 December 1971, after a tragic caraccident in which she lost her sight.

Janet Dingwall, daughter of David D. Dingwall, studied geology underProfessor T. J. Jehu at Edinburgh University and graduated M.A. in 1915and B.Sc. (Geology) 1920. She also taught at Queen's Street Ladies College,Edinburgh, then at Dalkeith High School, and in 1921 joined the staff ofUniversity College, Cardiff. She taught palaeontology there until hermarriage to Dr. J. V. Harrison in 1939. As 'Miss Dingwall', she was friendand adviser to many hundreds of Cardiff geology students, who esteemedher high principles, coupled with deep human understanding. She wasalways particularly kind to those who had come up the hard way, from themining valleys, who often found readjustment to student life difficult. Whileat Cardiff she published a short paper on Carboniferous corals (OnCyathoclisia, a New Genus of Carboniferous Coral. Q. JI geol. Soc. Lond.,82, 12-21).

She became a member of the Association in 1924, and always encouragedher students to join, finding the Long Field Meetings especially valuablefor them. She was a member of Council from 1954-8. She herself was aregular attender at the Annual Reunions, and was present on 6 November1971, only a few days before her accident. Both before and after marriage,she generally managed to attend at least one Field Meeting a year,particularly enjoying those which were held abroad. In fact, she attendedthe Field Meeting in Scotland in September 1971.

With her husband, who had become University Lecturer in the Depart­ment of Geology at Oxford in 1938, she made their home near BagleyWood a very happy place, where geology staff and students, and friendsfrom all over the world, were always welcome. Whenever possible, shejoined her husband on his travels, and found interest and enjoymentwherever she went. She often recalled with pleasure the year 1951-2, spentat the University of Illinois, where she hired a bicycle and pedalled aroundthe campus at a period when such a mode of transport was regarded inAmerica as extremely eccentric.

Janet Harrison generally managed to renew acquaintance with oldfriends at the annual British Association meetings, and her open delight at

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encounters with former Cardiff or Oxford students was very genuine. Thedeep sympathy of her many friends will go to her husband, who survivesher.

J.M. E.

DAVID LESLIE LINTON was born on 12 July 1906. His parents were fromNothern Ireland, and ran a grocer's shop in the Old Kent Road. He atten­ded Haberdashers' Hatcham Aske's school, and showed an early aptitudefor the arts that remained with him throughout his life, playing the violinand spending long days sketching along the Thames waterfront. In lateryears his ability with pencil, pastel and brush, although known to rela­tively few of his colleagues, showed an ability that makes the term 'fieldsketch' entirely inappropriate. Fortunately a few of his drawings wereincluded in Geoffrey Hutchings' book on landscape sketching.

He went to King's College, London, in 1923, often walking because hecould not afford the fare. He had shone as a scientist at school, and tookthe three-year General Honours course in Geology, Physics and Chemistry,in which he obtained a First. He was then able to stay on to take a fourthSpecial Honours Year, and rather than repeat any of these subjects, hetook Geography, working in particular with S. W. Wooldridge, thendemonstrator in the department. Characteristically he obtained anotherFirst in this examination, and so stayed on to do research and becamedemonstrator in Geology and Geography after Wooldridge. His M.Sc.was on the 'Structure, Morphology and Drainage of the Wessex Region',but at the same time he looked at the River Wey, and this formed the topicof his first published paper, which appeared in the PROCEEDINGS of theAssociation. He joined the Association in 1927 and became a Life Member.Despite his active membership of the Weald Research Committee, hepublished in the PROCEEDINGS only on one other occasion, a paper withS. W. Wooldridge in 1938: 'Some Episodes in the Structural Evolution ofS.E. England Considered in Relation to the Concealed Boundary of Meso­Europe.'

David Linton was invited to a Lectureship at Edinburgh in 1929, andhe remained a member of staff there until he went to Sheffield as Professorand Head of Department in 1945, although he served in the R.A.F.V.R.from 1940--5. During that time he was involved in photo-intelligence duties,and he was able to apply this wartime experience to his post-war teachingand research. The benefits were not all one way, for he was able to apply hisgeological training to the search for underground flying-bomb launchingsites on aerial photographs of northern France. He soon realised that mostof these were caves cut into the Chalk, using a Chalk Rock band as roof,so that by taking the appropriate outcrop from published geological mapshe could narrow his search to the most likely parts of the photograph. As a