Dr Glover is a zoologist who has devoted the greater part of his scientific life to work on tsetse problems throughout Africa. He has been particularly concerned with the study and application of fly-control methods in Tanzania, Kenya and Uganda and his knowledge of the tsetse situation in these parts is probably unrivalled. This scholarly, well-balanced review, presented at the First International Congress of Parasitology held in Rome in 1964, and now published by the FPS for IUCN, is the work of a scientist of wide experience, and fairly presents all the known facts. It leads one to the inevitable conclusion that there is no valid justification for using game-destruction as a practical or lasting means of tsetse control.