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SATURDAY, FEBRUARY 17, 1917
THE VENTILATION OF THE LUNGS IN PNEUMOTHORAX
In his well known essay on the factors of safety in the living organism, Meltzer1 called attention to Nature's extravagance in furnishing most of the important organs with a large surplus of tissue above the amount necessary to perform their ordinary physiologic tasks. This provision is a great blessing, serving to avert many a disaster which might follow impairment or a greater scantiness of functional matter. Meltzer reminded us that life may continue though a great part of the lungs is destroyed, if only the disease which caused the destruction comes to a standstill. In some cases of pneumonia one lung can be