47. Explain some simple machine.

48. A new application of electricity.

49. Weather forecasting.

50. Scientific or practical value of polar expeditions.

51. Changes of the tide.

52. An eclipse.

53. The principle of some such appliance as the thermometer, the barometer, the microscope, the air-brake, the block signal.

54. Developing a negative.

55. How the player piano is operated.

56. How the cash register prevents dishonesty.

57. How a new fruit is produced--as seedless orange.

58. Mimeographing.

59. The value of Latin for scientific terms.

60. The value of certain birds, worms, insects.

61. The life history of some queer animal, or insect, or plant.

62. How accuracy is secured.

63. The human eye and the camera.

64. The fireless cooker.

65. Choose some half dozen terms from any trade or business and explain them. To sell short, margin, bull, bear, lamb. Proscenium, ap.r.o.n, flies, baby spot, strike. Fold in eggs, bring to a boil, simmer, percolate, to French. File, post, carry forward, remit, credit, receivership. Baste, hem, rip, overcast, box pleat, batik, Valenciennes.

66. Building a musical program.

67. Commercial art.

68. Catch phrases in advertising.

69. Principles of successful advertising.

70. The Linotype machine.

71. How I made my first appearance as a public speaker.

72. Real conversation.

73. Mere talk.

74. The business woman.

75. A slump in a certain business or industry.

76. The Red Cross in war.

77. The Red Cross in peace.

78. Compare the principles of two political parties.

79. A fire alarm.

80. Why automobiles are licensed.

81. The powers and duties of some city or county official.

82. The advantages that this locality offers for certain industries or kinds of agriculture.

83. Society fads.

84. The ideal office holder.

85. New systems of government.

86. Various forms of socialism.

87. Collecting a debt by law.

88. Explain some legal procedure as suggested by some term, as mandamus, injunction, demurrer, habeas corpus, nolle prosequi.

89. Explain the composition and work of the Grand Jury.

90. The efficiency expert.

91. A new profession.

92. The advantages of a trolley car with both entrance and exit at the front end.

93. Labor-saving devices.

94. A supercargo.

95. Scientific shop management.

96. Hiring and discharging employees.