87. Growth of molds upon wood.
88. Growth of molds upon cloth.
89. Contamination of fresh food by means of moldy food.
90. Growth of bacteria.
91. Effect of boiling upon the growth of bacteria.
92. Effect of preservatives on the growth of bacteria.
93. Use of sugar as a preservative.
94. Pectin in fruit juice.
95. Pectin in the inner portion of orange and lemon peel.
[Illustration: BLEST BE THE FEAST WITH SIMPLE PLENTY CROWNED]