Q: What did the seal say when it swam into a concrete wall?
A: "Dam!"
Q: What does a seal get from sitting on the ice too long at the zoo?
A: Polaroids!
Q: What did the baby seal say when it was late?
A: "I would have been here sooner, but my iceberg hit a ship."
Q: What's a balanced diet for a polar bear?
A: A seal in each paw!
Iron lungIn 1928, the Iron Lung was used by its first patient, a young girl at the Children's Hospital in Boston. It was an artificial respirator that enabled her to breathe despite being paralyzed by polio. This negative pressure ventilator, invented by a young Harvard doctor, Philip Drinker, was the first widely used device of its kind. From the neck down, the patient's body lay in a sealed galvanized iron box. The 3 x 7 ft, 700-lb apparatus was powered by two household vacuum cleaners. As air was pumped out of the metal box, the patient's lungs drew in air, which was expelled as the air pump cycle next increased pressure, in a cycle to mimic a normal breathing rate.« |
