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Show FLEAS AND HOW TO JUL L THEM Washington, Aug. 1. Fleas can live In water from one to seven days, but kerosene oil, bisulphide and sulphide dioxide are quick and effective in de. stroylng them, according to the report of thr public health service. The Investigation In-vestigation was made by Maurice H, Mitzmain. an assistant in the plague laboratory at San Francisco, who reports re-ports in detail on the technique of flea-killing Only fleas healthy enough to hop about were experimentrd with, and no flea subject to various destructive schemes were regarded as dead unless un-less the observation of them covered a considerable period, for many f them, at first apparently killed, recovered recov-ered sufficiently 10 perform their duties, du-ties, including biting. |