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The chapter on cutting curves and circles, and also the chapters on soldering are very important to the beginner, and must not be overlooked by him. These chapters make up the fundamentals Of the practical side Of sheet metal work. The student who thor oughly masters them will have a splendid foundation for the more advanced work which follows. Chapters V and VI on drawing tools and their uses, and draw ing geometrical problems have been prepared to enable the student to become familiar with certain geometrical problems. These will help him understand the underlying principles of sheet metal pattern drafting. The student will do well to study these chapters carefully, as they form the groundwork for the more advanced drawings, Of which a good part Of the book is composed.