| [CHAPTER I.] |
| Instruments for Ascertaining the Atmospheric Pressure. |
| SECTION |
| 1. | Principle of the Barometer. |
| 2. | Construction of Barometers. |
| 3. | Fortin’s Barometer Cistern. |
| 4. | Standard Barometer. |
| 5. | Correction due to Capillarity. |
| 6. | " " Temperature. |
| 7. | " " Height. |
| 8. | The Barometer Vernier. |
| 9. | Self-compensating Standard Barometer. |
| 10. | Barometer with Electrical Adjustment. |
| 11. | Pediment Barometers. |
| 12. | The Words on the Scale. |
| 13. | Correction due to Capacity of Cistern. |
| 14. | Public Barometers. |
| 15. | Fishery or Sea-Coast Barometers. |
| 16. | Admiral FitzRoy’s Words for the Scale. |
| 17. | Instructions for Sea-coast Barometer. |
| 18. | French Sea-coast Barometer. |
| 19. | Common Marine Barometer. |
| 20. | The Kew Marine Barometer. |
| 21. | Method of verifying Barometers. |
| 22. | FitzRoy’s Marine Barometer. |
| 23. | Words for its Scale. |
| 24. | Trials of this Barometer under Gun-fire. |
| 25. | Negretti and Zambra’s Farmer’s Barometer andDomestic Weather-Glass. |
| 26. | Rules for Foretelling the Weather. |
| 27. | Causes which may bring about a Fall or a Rise in the Barometer. |
| 28. | Use of the Barometer in the Management of Mines. |
| 29. | Use of the Barometer in estimating the Height of Tides. |
| |
| [CHAPTER II.] |
| Syphon Tube Barometers. |
| 30. | Principle of. |
| 31. | Dial, or Wheel, Barometers. |
| 32. | Standard Syphon Barometer. |
| |
| [CHAPTER III.] |
| Barographs, or Self-Registering Barometers. |
| 33. | Milne’s Self-Registering Barometer. |
| 34. | Modification of Milne’s Barometer. |
| 35. | King’s Self-Registering Barometer. |
| 36. | Syphon, with Photographic Registration. |
| |
| [CHAPTER IV.] |
| Mountain Barometers. |
| 37. | Gay Lussac’s Mountain Barometer. |
| 38. | Fortin’s Mountain Barometer. |
| 39. | Newman’s Mountain Barometer. |
| 40. | Negretti and Zambra’s Patent Mountain and other Barometers. |
| 41. | Short Tube Barometer. |
| 42. | Method of Calculating Heights by the Barometer; Tables and Examples. |
| |
| [CHAPTER V.] |
| Secondary Barometers. |
| 43. | Desirability of Magnifying the Barometer Range. |
| 44. | Howson’s Long-Range Barometer. |
| 45. | McNeil’s Long-Range Barometer. |
| 46. | The Water-glass Barometer. |
| 47. | Sympiesometers. |
| 48. | Aneroids. |
| 49. | Small Size Aneroids. |
| 50. | Watch Aneroid. |
| 51. | Measurement of Heights by the Aneroid; Example. |
| 52. | Metallic Barometer. |
| |
| [CHAPTER VI.] |
| Instruments for Ascertaining Temperature. |
| 53. | Temperature. |
| 54. | Thermometric Substances. |
| 55. | Description of the Thermometer. |
| 56. | Standard Thermometer. |
| 57. | Method of ascertaining the exact Boiling Temperature; Tables, &c. |
| 58. | Displacement of the Freezing Point. |
| 59. | The Scale. |
| 60. | The method of testing Thermometers. |
| 61. | Porcelain Scale-Plates. |
| 62. | Enamelled Tubes. |
| 63. | Thermometers of Extreme Sensitiveness. |
| 64. | Varieties of Thermometers. |
| 65. | Superheated Steam Thermometer. |
| 66. | Thermometer for Sugar Boiling. |
| 67. | Earth Thermometer. |
| 68. | Marine Thermometer. |
| |
| [CHAPTER VII.] |
| Self-registering Thermometers. |
| 69. | Importance of. |
| 70. | Rutherford’s Maximum Thermometer. |
| 71. | Phillips’s ditto ditto. |
| 72. | Negretti and Zambra’s Patent Maximum Thermometer. |
| 73. | Rutherford’s Alcohol Minimum Thermometer. |
| 74. | Horticultural Minimum Thermometer. |
| 75. | Baudin’s Alcohol Minimum Thermometer. |
| 76. | Mercurial Minima Thermometers desirable. |
| 77. | Negretti and Zambra’s Patent Mercurial Minimum Thermometer. |
| 78. | Negretti and Zambra’s Second Patent Mercurial Minimum Thermometer. |
| 79. | Casella’s Patent Mercurial Minimum Thermometer. |
| 80. | Day and Night Thermometer. |
| 81. | Sixe’s Self-registering Thermometer. |
| |
| [CHAPTER VIII.] |
| Radiation Thermometers. |
| 82. | Solar and Terrestrial Radiation considered. |
| 83. | Solar Radiation Thermometer. |
| 84. | Vacuum Solar Radiation Thermometer. |
| 85. | Terrestrial Radiation Thermometer. |
| 86. | Æthrioscope. |
| 87. | Pyrheliometer. |
| 88. | Actinometer. |
| |
| [CHAPTER IX.] |
| Deep-Sea Thermometers. |
| 89. | On Sixe’s Principle. |
| 90. | Johnson’s Metallic Thermometer. |
| |
| [CHAPTER X.] |
| Boiling-Point Thermometers. |
| 91. | Ebullition. |
| 92. | Relation between Boiling-Point and Elevation. |
| 93. | Hypsometric Apparatus. |
| 94. | Precautions to ensure Correct Graduation. |
| 95. | Method of Calculating Heights from Observations with the Mountain Thermometer; Example. |
| 96. | Thermometers for Engineers. |
| |
| [CHAPTER XI.] |
| Instruments for Ascertaining the Humidity of the Air. |
| 97. | Hygrometric Substances. |
| 98. | Saussure’s Hygrometer. |
| 99. | Dew-Point. |
| 100. | Drosometer. |
| 101. | Humidity. |
| 102. | Leslie’s Hygrometer. |
| 103. | Daniel’s Hygrometer. |
| 104. | Regnault’s Condenser Hygrometer. |
| 105. | Temperature of Evaporation. |
| 106. | Mason’s Hygrometer. |
| 107. | Self-registering Hygrometer. |
| 108. | Causes of Dew. |
| 109. | Plan of Exposing Thermometers. |
| |
| [CHAPTER XII.] |
| Instruments used for Measuring the Rainfall. |
| 110. | Howard’s Rain-Gauge. |
| 111. | Glaisher’s Rain-Gauge. |
| 112. | Rain-Gauge with Float. |
| 113. | Rain-Gauge with Side Tube. |
| 114. | FitzRoy’s Rain-Gauge. |
| 115. | Self-Registering Rain-Gauge. |
| 116. | The principle of Measurement. |
| 117. | Position for Rain-gauge, &c. |
| 118. | Cause of Rain. |
| 119. | Laws of Rainfall. |
| 120. | Utility of Statistics of Rainfall. |
| 121. | New Form of Rain-gauge. |
| |
| [CHAPTER XIII.] |
| Apparatus employed for Registering the Direction, Pressure, and Velocity of the Wind. |
| 122. | The Vane. |
| 123. | Lind’s Wind-Gauge. |
| 124. | Harris’s Wind-Gauge. |
| 125. | Robinson’s Anemometer. |
| 126. | Whewell’s Anemometer. |
| 127. | Osler’s Anemometer and Pluviometer. |
| 128. | Beckley’s Anemometer. |
| 129. | Self-Registering Wind-Gauge. |
| 130. | Anemometric Observations. |
| |
| [CHAPTER XIV.] |
| Instruments for Investigating Atmospheric Electricity. |
| 131. | Atmospheric Electroscope. |
| 132. | Volta’s Electrometer. |
| 133. | Peltier’s Electrometer. |
| 134. | Bohnenberger’s Electroscope. |
| 135. | Thomson’s Electrometer. |
| 136. | Fundamental Facts. |
| 137. | Lightning Conductors. |
| 138. | Precautions against Lightning. |
| |
| [CHAPTER XV.] |
| Ozone and its Indicators. |
| 139. | Nature of Ozone. |
| 140. | Schonbein’s Ozonometer. |
| 141. | Moffat’s Ozonometer. |
| 142. | Clark’s Ozone Cage. |
| 143. | Distribution and Effects of Ozone. |
| 144. | Lancaster’s Registering Ozonometer. |
| |
| [CHAPTER XVI.] |
| Miscellaneous Instruments. |
| 145. | Chemical Weather Glass. |
| 146. | Leslie’s Differential Thermometer. |
| 147. | Romford’s Differential Thermometer. |
| 148. | Glaisher’s Thermometer Stand. |
| 149. | Thermometer Screen, for use at Sea. |
| 150. | Anemoscope. |
| 151. | Evaporating Dish, or Gauge. |
| 152. | Admidometer. |
| 153. | Cloud Reflector. |
| 154. | Sunshine Recorder. |
| 155. | Set of Portable Instruments. |
| 156. | Implements. |
| 157. | Hydrometer. |
| 158. | Newman’s Self-Registering Tide-Gauge. |