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Show ELECTRICITY TO KILL PESTS First Experiments Made In Washington Washing-ton to Destroy Moths and Aphides by Incandescent Lights. Some experiments in electrocuting tree pests, said to be the first ever made, were recently conducted in the state of Washington by W. N. Frost and J. C. Lawrence. In a six-year-old orchard many second-brood moths and green aphides were killed in a few minutes. The apparatus consisted consist-ed of a storage battery and incandescent-light globes of Bix-candle power, netted with fine steel wire, coated with copper and tin alternately. The globes were placed in the trees, at the ends of covered wires, and the moths flying against them completing the electric circuit, were killed, and fell into receptacles beneath the globes. Mr. Frost estimates that one battery to an acre of trees will keep the moths under control, dispensing with the usual spraying anr; saving many dollars. He Is preparing to wire his orchard of ten acres, containing seven hundred trees, and some neighbors neigh-bors will do the same. Several thousand thou-sand acres of bearing apple trees will be thus equipped by spring. If commercial com-mercial electric wires are extended to orchards the expense of batteries may be saved by making direct connection with them. |