Correspondence, 1967-1970, 1980. Underwood was Director of the Institute of Agriculture, University of Western Australia, Perth. Synge declined an invitation to write the Royal Society memoir of Underwood.
Correspondence 1967-1969 relates to Synge's Royal Society memoir of H.R. Marston [see J/182-J/185].
Draft letter 1980 from Synge to K. L. Blaxter, the Royal Society memorialist of Underwood, discusses Marston and the 'cobalt story' and the New Zealand facial eczema project.