Man has been breathing with lungs for a million years. Men have been studying the lungs's physiology for nearly 5.000 years. But not until Radiologist Alfred Ernest Barclay* took to blowing bismuth and powdered glass down the windpipes of cats was one of the lungs's important protective devices thoroughly studied. Last week his findings were published in the American Journal of Roentgenology.
At Oxford's Nuffield Institute for Medical Research, Dr. Barclay has recently explored the uttermost crannies of the living lungs. Notable result was a complete description of "the normal escalator action" by which the lungs constantly expel dry dust that is...
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