CONTENTS. 



CHAPTER PAGE 



I. PliELIMINABY DEFINITIONS AND IlLUSTBATIONS ... ... 1 



II. SoMB Habits and Instincts of Youno Bieds ... 29 



HI. Locomotion in Yodng Bibds ... ... ... ... 59 



IV. Further Obsbbvations on Young Bibds ... ... 80 



V. Observations on Young Mammals ... ... ... 101 



VX. The Kelation of Consciousness to Instinctive Behaviouk 126 



VII. Intelligence and the Acquisition of Habits ... ... 144 



VIII. Imitation ... ... ... ... ... ... 166 



IX. The Emotions IN thbib Relation to Instinct ... ... 186 



X. Some Habits and Instincts of the Paibing Season ... ^0 



XL Nest-building, Incubation, and Migration ... ... 232 



XII. The Eblation of Organic to Mental Evolution ... 262 



Xin. Abe Acquired Habits Inherited? ... ... ... 280 



XIV. Modification and Variation ... ... ... 307 



XV. Hebedity in Man ... ... ... ... ... 323 



Frontispiece : Geoup of Young Birds, from a Drawing by 

 G. E. Lodge. 



