The Pedestrian's Record

:o8 the pedestrian's record. Thirdly, mechanical impressions cause inflamma­ tion. The persistent application of a piece of ice to a part interferes with nervous action, and intense con­ gestion supervenes, observed in men suffering from frost-bitten feet. Great heat, blisters, caustics, etc., all bring about local inflammation, i.e., cause coagulation of blood in the parts over which theyhave been applied. Fourthly, external influences calculatedto devitalize living tissue produce inflammation by involving the nerves in pathological states. How many horsemen during a run with hounds have been compelled to pull up in order, as they call it, to save their horses from suffocation? When the rider alights, he observes the following symptoms—the forelegs out, the nos­ trils dilated, and he hears a deep, stertorous, and laboured breathing. The animal at this time is suffering with congestion of the lungs, caused by his being galloped at a racing pace, during which period the lungs have been compelled to dilate and collapse with unusual rapidity ; and thus by long-continued and excessive physical exertion, the nerves become devitalized, the lung-tissue weakened by the with­ drawal of nervous force, and the blood, being in con­ tact with injured tissue, begins to coagulate, and congestion of the lungs results. The application in medical practice and surgery of the law suggested in the above remarks on the theory as to the cause of inflammation in the treatment of diseases, and par­ ticularly so in cases of fever, the adoption of the rules which this teaching necessarily involves—has