Tests are under way at the Microbial Research Establishment, Porton Down, to determine the safety of two viruses which may be used in the control of insect pests. News of the work, which is being carried out under contract for the Ministry of Overseas Development, was given by Dr T. W. Tinsley to members of the British Association, gathered for their annual meeting at Guildford last week. Dr Tinsley, who is Director of the Natural Environment Research Council's Unit of Invertebrate Virology at Oxford, described the potential of viral control to Peter Collins.
