Show explains how oil puts out oue wiggle wigglers Wigg lers ra mosquito wig glera or larvae are not smothered by the oil sprayed on their pools they simply drown the researches of dr david kellin working at the molteno institute in south africa and just announced in london by sir arthur E H shipley pley run counter to the older and com commonly mouly accepted notion mosquitoes and their larvae like oil all insects lieve no lungs or gills to breatha with such as higher have they get the oxygen they require through systems of tubes opening directly to the outside air and branching inward to all parts parta of their bodies doctor kettin discovered that mosquito larvae hod had certain cells cella in these tubes that secreted a fatty substance which served to keep the water out hut but upon experimenting with them using oil liquids that dissolve fats lie he found that if these protective secretions were thus dissolved the breathing tubes of the larva filled up with water and the hapless wig alers drowned |