Abstract
A CURVE showing the average number of insects at various heights up to 2,000 ft., and diagrams indicating the comparative distribution of the nine more important families of insects, are submitted by Prof. A. C. Hardy and P. S. Milne. High temperature and low humidity were found to favour the aerial drift of insects. The insects were caught in nets 3 ft. in diameter, carried into the air by kites. The authors point out that wind-borne insects contribute not only to the spread of insect pests but also may possibly be carriers of foot-and-mouth disease.
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