Seals: Excellent Swimmers and Best Friend of the Eskimos

The seal is an excellent swimmer. Each leg is really a flipper the enables it to move swiftly through the water. The forelegs can be used for movement on land, for with them the seal can pull itself along the ground. There are many kinds of seals. The best-known type is the leopard seal, which has been given this name because of its yellowish spots. Its skin is covered with rough hair that is useless as fur. At one time this type of seal was hunted for the oil  that could be obtained from its fat. Today, seal oil is no longer important, since kerosene has taken its place, read more ......

Diagnosing Lung and Breathing Problems

SAFETY IN YOUR HOME

Every year accidents kill thousands of people, injure millions more, and destroy buildings, land and valuable possessions. Many of these accidents are caused by people who are careless or by defects in buildings and machines. If a man runs out into a busy street and is hit by a car, his carelessness has caused the accident and no one but he is to blame. But it is different if a ceiling falls on him when he is in a building. 

The ceiling may have been constructed carelessly or the owner of the building may have neglected it. Then the builder or the owner is to blame. Many accidents could easily be prevented if simple rules of safety were followed in homes, schools, offices, roads and public places....read more.