The Beauties of Nature, and the Wonders of the World We Live In
Chapter 3
ON ANIMAL LIFE--_continued_ 71
Freedom of Animals 73 Sleep 78 Senses 84 Sense of Direction 93 Number of Species 96 Importance of the Smaller Animals 97 Size of Animals 100 Complexity of Animal Structure 101 Length of Life 102 On Individuality 104 Animal Immortality 112