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.
A drilling machine, called a drill press, is used to cut holes into or through metal, wood, or other materials (Figure 4-1). Drilling machines use a drilling tool that has cutting edges at its point.
1 Cold press is used for a wide variety of watercolor effects from washes to detail work. 2  Hot press is primarily used for detail work due to its smooth finish.  Beware, the texture of paper can vary from manufacturer to manufacturerâwhatâs considered smooth for one may be toothy by anotherâso you have to experiment.