October, '22] DE ONG: HARD WATERS AND SPRAYS 339 and the presence of husk leaves as characters associated with the amount of injury due to the earworm. The practical application of physiological and morphological studies offers certain possibilities worthy of further investigations. The writer is of the opinion that such studies, carried on in co-operation with the agronomist, the plant breeder and the chemist, open the way for certain intensive investigations which ultimately will prove

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... e in the development of control measures. Many of the characters associated with earworm activities can be changed or modified by careful breeding, and varietal studies of corn may reveal certain strains 13ckingin someof the characters attractive to the moths.