A. Biographical and personal
A.1-A.30: Material of particular interest in this section includes the correspondence conveying Weis-Fogh's decision to retain Danish citizenship after the death of his wife (A.9), and that relating to Cambridge University, 1966-1975, when Weis-Fogh was Professor of Zoology and Head of the Department of Zoology (A.10-A.22). There is very little personal material.
B. Early work and research on locust flight, 1941-1958
Material covering Weis-Fogh's research up to the discovery in 1958 of resilin (B.136). Much of the research done during this period remained an important basis for further experimental work, and Weis-Hogh used some of the hitherto unpublished results in later papers (see C.26 and D.40-D.42). The majority of the material is in Danish.
B1-B.49: Early research and work in August Krogh's laboratory.
B.50-B.66: Work on locust flight muscle.
B.67-B.143: Material relating to the 'Biology and Physics of Locust Flight'.
C. Research in Copenhagen, 1957-1966
This section corresponds roughly with the period during which Weis-Hogh was Professor of Zoophysiology at Copenhagen, 1958-1966, although there is some material that overlaps with section B. The papers include background material to the discovery of resilin (C.1-C.6), and cover the work Weis-Fogh carried out on several aspects of insect physiology while in Copenhagen, including the tracheal system and muscle action potential in locusts (C.12-C.30). A grant from the United States Air Force European Office of Aerospace Research in 1965 helped to support further investigation of resilin through different types of microscopy, and the results of some of this research appear in C.37-C.103. The work was continued in Cambridge after Weis-Fogh's appointment to the Chair of Zoology in 1966 (see D.1-D.26).
C.1-C.11: Early work on resilin.
C.12-C.30: Other research (mainly on insect physiology).
C.31-C.103: Research on the properties of resilin and elastomers in insects.
D. Research in Cambridge, 1966-1975
The record of Weish-Fogh's research work in this section is less complete than in sections B and C because material relating to research projects continuing after his death in 1975 was retained by the Department of Zoology, Cambridge. This period marked the growth and diversification of Weis-Fogh's research interests: he supervised two major research teams (see D.35 and D.36-D.38), as well as continuing research on insect flight on which he published a major paper in 1973 (D.48-D.53). The section ends with Weis-Fogh's plans for a project to study biological fluid dynamics in the University of Cambridge, which were never put into action.
D.1-D.34: Research on resilin and elastin.
D.35: Material relating to the Biological Microprobe Laboratory.
D.36-D.39: Research on 'Intracellular and extracelluar matrix proteins'.
D.40-D.57: Research on animal flight.
D.58-D.62: Project for research on 'Fluid dynamics in biology'.
E. Lectures, addresses, publications, 1948-1976
There are papers for Copenhagen (1958-1965) and Cambridge (1968-1975), and occasional brief correspondence accompanying the lectures. The subjects chosen reflect Weis-Fogh's main research interests at the given time, but talks on insect flight recur throughout the period covered. Much of the material in the first part is in typescript and was designed for distribution to students rather than as a basis for lectures delivered by Weis-Fogh. He continued to give talks in Denmark after his move to Cambridge in 1966, and much of the material is in Danish. There is some overlap with section F.
E.1-E.20: University lectures and courses delivered or attended by Weis-Fogh, 1955-1975.
E.21-E.74: Lectures and addresses, 1948-1975.
E.75: Reprints of published papers, 1949-1976.
F. Conferences, visits and lecture tours, 1955-1975
Weis-Fogh attended many conferences and symposia, in particular the regular meetings of the Society of Experimental Biology, where he frequently read papers. In 1975 he organised, with Sir James Lighthill, a small but influential symposium on the 'Biodynamics of Animal Locomotion' (F.66-F.70). The material in this section consists mainly of correspondence about arrangements for conferences, etc., but there are also some drafts of papers presented by Weis-Fogh.
The bulk of the material is scientific in content, but contains many personal and friendly references. There are letters in English, Danish, German and Swedish.
G.1-G.149: Correspondence with individuals, organisations and societies.
G.150-G.174: Correspondence with editors and publishers.
G.175-G.181: References and appointments.
G.182-G.197: Miscellaneous shorter correspondence.