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Show Y.ggh and Microbe. Dr. McClintock of the University of Michigan has performed experiments which indicate that eggs may become Infected with microbes before they are laid. A healthy hen, after repeated washings in sterilized solutions, was placed in a sterilized cage. As soon aa possible after being laid a portion of her eggs were placed in sterilized cotton an then in an incubator. All these eggs de cayed and swarmed with bacteria. The remaining egga were taken as soos aa laid, and cultures were made from their contents. Some of these culture tubes developed; others remained sterile. After Aft-er some days the hen was killed, and with proper aseptio precautions culture tubes were inoculated from various portions por-tions of the oviduct. Most of these tubes developed. It would thus seem probable (hat the putrefactive bacteria entered ils egg m its passage down the oviduct nd before ke shell was formed. |