LIST OF EXPERIMENTS XV 



63. Expt. 69. Weighing by Elasticity . . 165 



64. Expt. 70. The Pendulum ... . . 168 



65. Expt. 71. The Use of the Lever . . .169 



66. Expt. 72. The Use of the Inclined Plane . 170 

 68. Expt. 73. Magnetic Materials . . . 175 

 68. Expt. 74. To Draw a Magnetic Field . . 176 

 68. Expt. 75. Blue Prints of Magnetic Fields . 177 

 68. Expt. 76. Attraction and Repulsion . .178 

 74. Expt. 77. Waterproofing . . . .186 

 77. Expt. 78. Soap Making . " :. . . . 189 

 79. Expt. 79. Making and Distilling Alcohol . 191 



