Abstract
THE control of injurious forms of insect life by the application of biological methods has, in a number of instances, proved remarkably successful. Other methods of control in such cases had been of little avail or were impracticable. Success achieved by the utilization of the natural enemies of injurious insects has usually proved to be relatively inexpensive and of a more or less permanent character. As a rule the most favourable conditions are those afforded by tropical or subtropical islands where the dissemination of the beneficial introduced insects meets with few handicaps or barriers. Recently an experiment in the biological control of coconut pests in Seychelles has been recounted (Bull. Entomol. Res., 31; 1940).
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