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This work is intended firstly as a text-book for teachers in Schools of Art and Science, Training Colleges, National and other schools, and secondly as a manual for self instruction for artisans and the public generally. It is impossible to over estimate the importance of a knowledge of Geometry, forming as it does. The basis of all the mechanical and decorative arts; and therefore the first volume of a Technical Series has been devoted to this subject, from which, as from' one common highway, branches may diverge, adapted to the various industrial arts.
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