First Sentence

"CONTENTS MATHEMATICS Page Logarithms 2 Antilogarithms 4 Natural Sines 6 Natural Cosines 8 Natural Tangents 10 Logarithmic Sines 12 Logarithmic Cosines 14 Logarithmic Tangents 16 Natural Secants 18 Natural Cosecants 20 Natural Cotangents 22 Circular or Radian Measure 24 Squares, Cubes, Square Roots, Cube Roots and Reciprocals 26 Reciprocals of Four-Figure Numbers 28 Natural Logarithms 30 Exponential and Hyperbolic Functions 32 Mathematical Constants 33 PHYSICS I. Mechanical, Magnetic and Electrical Units and Definitions. (a) Metric. (b) British. (c) M.K.S. 34 Relations between the Systems of Units 43 II. Heat Units and Definitions 45 III. Photometric and Optical Units and Definitions 47 IV. Acoustical Units and Definitions 48 V. Properties of the Elements 50 VI. Properties of Solids 52 VII. Properties of Liquids 53 VIII. Properties of Gases 54 IX. Mechanical Data 55 X. Electrical and Magnetic Data 57 XI. Thermal Data 59 XII. Optical Data 63 XIII. Acoustic Data 66 XIV. Astronomical Data 67 XV. Terrestrial and Geodetic Data 70 XVI. Atomic Weights, Physical and Chemical Scales 73 XVII. The Periodic Table 74 XVIII. Atomic and Molecular Constants 76 XIX. Energy Equivalents 77 XX. Radioactivity 79 XXI. Table of Isotopes and Relative Abundance of the Elements 84 XXII. The Particles of Modern Physics 89"