Because of the First World War, Wegener's book went unnoticed outside Germany. In 1922, however, a third (revised) edition was translated into English, French, Russian, Spanish, and Swedish, pushing Wegener's theory of continental drift to the forefront of debate in the Earth sciences.
How to Use a Drill Press Machine: A drilling machine comes in many shapes and sizes, from small hand-held power drills to bench mounted and finally floor-mounted models. They can perform operations other than drilling, such as countersinking, counterboring, reaming, and tapping large or small holes.
The right drill press will last for years and years. With a Craftsman drill press, you'll have many of the features of an industrial model combined with ease of use perfect for any skill level. Variable speed drill presses will let you customize the speed of the drill bit to the job at hand.