CONTENTS. 



87. Social instinct -of birds The 

 republican. 88. Habitation of 

 wasps. 89. Formation of the 

 colony Birth of neuters. 90. 

 Males and females. 91. Struc- 

 ture of the nest. 92. Form and 

 structure of the comb. 93. Pro- 

 cess of building the nest and con- 

 structing the combs. 94. Division 

 of labour among the society. 95. 

 Number and appropriation of the 

 cells. 96. Doors of exit and 

 entrance. 97. Avenue to the en- j 

 trance. 98. Inferior animals not 

 devoid of intelligence. 99. Ex- 

 amples of memory. 1 00. Memory 

 of the elephant Anecdote. 101. 

 Memory of fishes. 102. Exam- 

 ples of reasoning in the dog. 103. j 

 Singular anecdote of a watch-dog. I 

 104. Low degree of intelligence ! 

 of rodents and ruminants proved I 

 by Cuvier's observations. 105. ] 

 Intelligence of the pachydennata j 

 the elephant the horse the j 

 pig the pecari the wild boar. 

 106. The quadrumana. 107. 

 Cuvier's observations on the 



ouraiig-outang marks of his great 

 intelligence. 



CHAP. IV. 108. Anecdotes of the 

 ourang-outang. 109. Analogy 

 of the skeleton of the ourang- 

 outang to that of man. 110. Of 

 the brain to the human brain. 



111. Intelligence of the wolf. 



112. Anecdote of the hawk, the 

 cat, the eagle. 113. Of the doj;. 

 114. Of the bear. 115. Intelli- 

 gence of animals decreases with 

 age. 116. Man distinguished 

 from other animals by the degree 

 of intelligence. 117. Lower ani- 

 mals are not endowed with reflec- 

 tion. 118. Inferior animals have 

 methods of intercommunication as 

 a substitute for language. 119. 

 Examples in the cases of marmots, 

 flamingoes, and swallows. 120. 

 Intercommunication of ants. 

 121. Example in their mutual 

 wars. 122. Acts which cannot 

 be explained either by instinct or 

 intelligence. 123. Carrier pi- 

 geons. 124. Domesticity and 

 tarn en ess. 



