CONTENTS 



of Protective Colouring Objection that Colour, as being dangerous, 

 should not exist in Nature Mimicry Mimicry among Lepidoptera 

 Lepidoptera mimicking other Insects Mimicry among Beetles 

 Beetles mimicking other Insects Insects mimicking Species of other 

 Orders Cases of Mimicry among the Vertebrata Mimicry among 

 Snakes Mimicry among Birds Mimicry among Mammals Objec- 

 tions to Mr. Bates's Theory of Mimicry Mimicry by Female Insects 

 only Cause of the dull Colours of Female Birds Use of the gaudy 

 Colours of many Caterpillars Summary General deductions as to 

 Colour in Nature Conclusion . . . . Pages 34-90 



IV. ON INSTINCT IN MAN AND ANIMALS 



How Instinct may be best Studied Definition of Instinct Does Man 

 possess Instincts ? How Indians travel through unknown and track- 

 less Forests 91-97 



V. THE PHILOSOPHY OP BIRDS' NESTS 



Instinct or Keason in the Construction of Birds' Nests Do Men build by 

 Reason or by Imitation ? "Why does each Bird build a peculiar kind 

 of Nest ? How do young Birds learn to build their first Nest ? 

 Do Birds sing by Instinct or by Imitation ? How young Birds may 

 learn to build Nests The Skill exhibited in Nest-building Ex- 

 aggerated Man's Works mainly Imitative Birds do Alter and 

 Improve their Nests when altered Conditions require it Conclusion 



98-117 



VI. A THEORY OP BIRDS' NESTS 



Changed Conditions and persistent Habits as influencing Nidification 

 Classification of Nests Sexual differences of Colour in Birds The 

 Law which connects the Colours of Female Birds with the mode of 

 Nidification What the Facts Teach us Colour more variable than 

 Structure or Habits, and therefore the Character which has generally 

 been Modified Exceptional cases confirmatory of the above Explana- 

 tionReal or apparent exceptions to the Law stated at page 124 

 Various modes of Protection of Animals Females of some groups 

 require and obtain more Protection than the Males Conclusion 



118-140 



VII. CREATION BY LAW 



Laws from which the Origin of Species may be deduced Mr. Darwin's 

 Metaphors liable to Misconception A case of Orchid-structure ex- 



