72. Effect of cold water on a mixture of cream of tartar and baking soda.

73. Effect of hot water on a mixture of cream of tartar and baking soda.

74. Effect of hot water on baking powder.

75. Starch in baking powder.

76. Comparison of the time of action of different types of baking powders.

77. Conditions for growth of the yeast plant.

78. Protein in flour.

79. Mixtures for freezing.

80. Effect of air, light, and drying upon the growth of molds.

81. Effect of moisture and light upon the growth of molds.

82. Effect of moisture and darkness upon the growth of molds.

83. Effect of moisture and low temperature upon the growth of molds.

84. Growth of molds on cut fruit.

85. Growth of molds upon whole fruits.

86. Growth of molds on other foods.