VU1 CONTENTS. 



Page 

 CHAPTER VII. 



Colour of Eggs 118 



Use of colours . . . 118 



Instances from flowers, shells, and spiders .119 



Formation of the egg-shell . . . . .119 



Canary's eggs . . . . . . .121 



Variety of markings in the same species . . .122 

 Theories of Darwin and Gloger . . . .123 



Objections thereto ...... 126 



CHAPTER VIII. 



Facts observed in Hatching . . . . .132 



Anecdotes from Pliny and Reaumur . . . 132 



Artificial hatching in Egypt . . . . .133 

 Egyptian egg-oven or mamal . . . .135 



Experiments of Reaumur ..... 138 

 Hatching eggs in dung ..... 143 



Hatching in a bake-house ..... 144 

 Experiment with the eggs of a Wood-wren . . 145 



CHAPTER IX. 

 Evolution of the Chick : 



Egg twelve hours after incubation . . . .14, 



After sixteen hours . . . . . .148 



After thirty- six hours ..... 150 



After four days 151 



After five days . . . . . .152 



After six days . . . . . .153 



After seven and eight days . . .154 



After nine days . . . . . .155 



After ten days 156 



After fourteen days . . . . .158 

 After eighteen days ...... 160 



