A simple explanation of hair--how it grows, why dampness affects it, why its characteristics cannot be changed, how strong it is, and how it stretches.
Describes the characteristics and uses of various types of grass including oats, barley, and wheat with a discussion of their importance to human, and animal life.
Discusses the age-old quest for water all over the world; the hydrologic cycle; and obtaining fresh water from saline and atmospheric water as well as from underground and surface water.
