yi CONTENTS. 



CHAPTER II. 



EQUILIBRIUM OF FLOATING BODIES SPECIFIC GRAVITY. 



ART. PAGE 



24. Upward Pressure, Buoyant Effort 50 



25. Conditions of Equilibrium of an Immersed Solid 52 



26. Depth of Flotation 54 



27. Stability of Equilibrium 57 



28. Position of the Metacentre ; Measure of Stability 60 



29. Specific Gravity 66 



30. The Standard Temperature 67 



31. Methods of Finding Specific Gravity 69 



32. Specific Gravity of a Solid Broken into Fragments 72 



33. Specific Gravity of Air 73 



34. Specific Gravity of a Mixture 73 



35. Weights of the Components of a Mechanical Mixture 75 



36. The Hydrostatic Balance 76 



37. The Common Hydrometer 77 



88. Sikes's Hydrometer 78 



39. Nicholson's Hydrometer 79 



Examples. 80 



CHAPTER III. 



EQUILIBRIUM AND PRESSURE OF GASES ELASTIC FLUIDS. 



40. Elasticity of Gases 88 



41. Pressure of the Atmosphere 89 



42. Weight of the Air 90 



48. The Barometer 91 



44 The Mean Barometric Height 92 



45. The Water-Barometer 92 



46. Manometers , 93 



47. The Atmospheric Pressure on a Square Inch 94 



48. Boyle and Mariotte's Law 95 



l!i Effect of Heat on Gases 98 



50. Thermometers Fahrenheit, Centigrade, Reaumur 99 



51. Comparison of the Scales of these Thermometers 100 



x l*nion of Mercury 101 



58. Dalton'H and Uay Lussac's Law 101 



54. Pressure, Temperature, and Density 103 



55. Absolute Temperature .105 



