ON CIVIL ENGINEERING INTERNATIONAL CORRESPONDENCE SCHOOLS SCRANTON, PA. ARITHMETIC ALGEBRA LOGARITHMS GEOMETRY AND TRIGONOMETRY ELEMENTARY MECHANICS HYDRAULICS PNEUMATICS ELEMENTARY GRAPHICAL STATICS 5780 SCRANTON INTERNATIONAL TEXTBOOK COMPANY B-3 Kurt F. Wendt Library Copyright, 1897, 1898, 1899, by THE COLLIERY ENGINEER COMPANY. Arithmetic, Sections 1, 2, 3, 4, and 6: Copyright, 1892, 1893, 1894, 1895, 1896, 1898, 1899, Arithmetic, Section 5: Copyright, 1902, by INTERNATIONAL TEXTBOOK COMPANY. Algebra: Copyright, 1893, 1894, 1895, 1896, 1898, by THE COLLIERY ENGINEER COM- PANY. Logarithms: Copyright, 1897, 1898, by THE COLLIERY ENGINEER COMPANY. Elementary Mechanics: Copyright, 1892, 1893, 1894, 1896, 1898, by THE COLLIERY Hydraulics: Copyright, 1893, 1895, 1897, 1899, by THE COLLIERY ENGINEER COM- PANY. Pneumatics: Copyright, 1893, 1895, 1897, by THE COLLIERY ENGINEER COMPANY. All rights reserved. di BURR PRINTING HOUSE, FRANKFORT AND JACOB STREETS, NEW YORK. AVA18 144 い PREFACE. On account of a great and increasing demand for a reduction in the size of the drawing volume, we have had it reset for this reprint. The drawing plates have been printed on special thin, tough paper and are inserted on guards, so that they may be opened to the full width. These plates are now ten inches long between the border lines instead of twelve inches, as formerly, but it is not thought that this slight reduction in size will in any way lessen the value of the plates, and the advantages of having the drawing volume uniform in size with the other volumes of the set are obvious. On account of the thinness of this volume, we have placed the first of the two Key volumes at the end, to follow Mechanical Drawing. The mapping plates have also been reduced to the same size as the drawing plates and are inserted in their proper places in the volume containing the paper entitled Mapping. On account of the relative thinness of the second Key volume and the Tables and Formulas volume, they have been combined under one cover. As the result of these changes, there are now ten volumes in this set instead of twelve, as formerly; all the volumes are nearly equal in size; and the set is greatly improved, both in appearance and in convenience for reference. These volumes comprise a thorough elementary treatment of the theory and practice of civil engineering. The groundwork is covered by the papers on mathematics and iii T. I |