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Show F.ggn and Microbes. 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, waa placed in a sterilized cage. As soon as 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 eggs were taken as soon as 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 aseptic precautions culture tubes were inoculated from various portions por-tions of the oviduct. Most of these tubes developed. It would thus seem probable that the putrefactive bacteria entered .s egg in its passage down the oviduct nd before 'ie shell was formed. |