Geology in Pictures

This little book will tell you about geologists, about their hard and very necessary work, and also about the science of geology. Geology is one of the oldest sciences. When Cave-men looked for hard stones for their axes, they were being geologists. In those distant times, of course, people only used what they found on the surface of the Earth. It was many thousands of years later before they learnt to use the riches hidden under the Earth's Surface.