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Plate XXIII (Fig. 11): Water color drawing of trachea of dog dying 25 hours after exposure; the epithelium is entirely destroyed, the submucosa is edematous with large fibrin spaces and many leucocytes. (Fig. 16) Dilatation of small bronchus with epithelial necrosis; small masses of bacteria (to left) with leucocytic infiltration; death 72 hours after exposure.

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