...Nature of Logarithms 1 Explanation of Table of Logarithms ..... 3 Multiplication by Logarithms ...... 7 Division by Logarithms ........ 7 Involution by Logarithms ....... 8 Evolution by Logarithms ....... 9 CHAPTER II. GEOMETRICAL DEFINITIONS ........ 10 CHAPTER III. INSTRUMENTS USED IN DRAWING 15 GEOMETRICAL...