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.
Drill Presses. What you need to know about Drill Presses. wood drill presses come in floor standing or bench mounted styles. Benchtop wood drill presses are generally used for all purpose needs and floor standing wood drill presses work well for boring deep mortises, drilling 3 forstner bit into hardwoods or drilling into a long work piece.