XVlll LIST OF EXPERIMENTS 



SECTION PAGE 



52. Expt. 25. The Seasons Length of Day and Night . . 73 



61. Expt. 26. The Earth's Magnetism 82 



62. Expt. 27. Magnetism 84 



64. Expt. 28. Sources of Electricity 87 



65. Expt. 29. The Electric Bell, Telegraph, and Telephone . 90 



66. Expt. 30. Electroplating 91 



Expt. 31. The Storage Cell 92 



67. Expt. 32. Heat and Light from Electricity ... 93 



68. Expt. 33. Heat Produces Light 95 



70. Expt. 34. Reflection 97 



71. Expt. 35. Color 99 



72. Expt. 36. Refraction and Dispersion 101 



73. Expt. 37. The Rainbow 102 



78. Expt. 38. Candle Power The Photometer . . .106 



79. Expt. 39. Effect of Light upon a Silver Salt . . .108 



80. Expt. 40. Composition of Air 110 



81. Expt. 41. Weight of Air . Ill 



82. Expt. 42. Atmospheric Pressure 113 



83. Expt. 43. Boiling at Reduced Pressure . . . .115 



84. Expt. 44. "Suction" 116 



86. Expt. 45. The Siphon 118 



87. Expt. 46. To Prepare Nitrogen 119 



88. Expt. 47. The Testing of Paint 121 



89. Expt. 48. Sources of Carbon Dioxide . . . .123 



90. Expt. 49. Preparation of Carbon Dioxide The Chemi- 



cal Engine ......... 125 



97. Expt. 50. Resolution of Forces 132 



98. Expt. 51. To Make a Malay Kite 134 



99. Expt. 52. To Make a Boomerang 136 



100. Expt. 53. To Make a Windmill 138 



101. Experiment for the Teacher 139 



102. Expt. 54. The Dew Point . . . . . .141 



105. Expt. 55. Sublimation 144 



107. Expt. 56. Temperature Curves 147 



110. Experiments for the Home 150 



112. Exrjt. 57. Precipitation and Filtration . . . .153 



114. Expt. 58. To Prepare Hydrogen 157 



Experiment for the Teacher . . . . . .157 



115. Expt. 59. Solution and its Effects 159 



