In 1928, Children's Hospital in Boston was the scene of the first use of an "iron lung." Developed by a young Harvard doctor, it was little more than a galvanized iron box, a bed, and two household vacuum cleaners. A little girl whose lungs were paralyzed by polio was placed in the airtight metal cylinder with only her head exposed. The 700-pound, 3X 7 foot, galvanized metal machine breathed for her. Vacuum pumps connected to it drew the air in and out of the cylinder, causing the child's lungs to rise and fall in regular breaths. For the next 30 years, this invention would mean the difference between life and death for victims of polio. It breathed for them.

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