CONTENTS.

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PART I.—THE ESSENTIAL ELEMENTS.
Section I.—The Drawing Office and its Furnishings.
PAGE
The Drawing Office 1
Instruments 2
Materials 5
Precautions and Remarks 9
Section II.—Geometrical Problems. 15
Section III.—Lines, Dots, and their Combinations.
Straight and Curved Lines 27
Lines of uneven thickness 30
The Broken Line 30
The Dotted Line 31
Combinations of Straight, Broken, and Dotted Lines 31
The Wavy Line 33
Grass-land 34
Swamps and Marshy Ground 35
Sand and Gravel 35
Woodland 36
Uncultivated Land 37
Contour Lines 37
Section IV.—Colours.
Flat-tints 40
Conventional Colours 44
Water 45
Grass-land 45
Marsh 45
Sand and Gravel 46
Mud 46
Woodland 46
Cultivated Land 47
Uncultivated Land 47
Buildings 47
Roads and Streets 47
Fences 47
Section V.—Shading.
Application of Shade Lines 48
Cylindrical Surfaces 50
Shading Lines 50
Shading Lines on Cylindrical Surfaces 51
Shading Lines in Topographical Drawings 52
The Vertical System of Shading 57
Shading in Colours 63
Hill Slopes 63
Cylindrical Surfaces in Mechanical Drawings 64

                                                                                                                                                                                                                                                                                                           

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