CONTENTS. 



lK",-EOI>TTnTinN PagOB 1-4 



PART I. 

 THE DESCENT OB ORIGIN OP MAN. 



CHAPTER I. 



The Evidence of the Descent op Man fkom some Lowbe Fohm. 



PAGH 



Nature of the evidence bearing on the origin of man — Homologous 

 structures in luan and the lower animals — Miscellaneous points 

 of correspondence — Development — Kudimentary structures, 

 muscles, sense-orarans, hair, bones, reproductive organs, &c. — 

 The bearing of these three great cLisses of facts on the origin of 

 man ... ...... 6 



CHAPTER II. 



O.v THE Manner of Development of Man fkom some Lowgk 

 Form. 



Variability of body and mind in man— Inheritance — Causes of 

 variability — Laws of variation the same in man as in the lower 

 animals— Direct action of the conditions of life — Ett'ects of the 

 increased use and disuse of parts — Arrested development — Re- 

 version — Correlated variation — Rate of Increase — Checks to 

 increase — Natural selection — Man tlie most dominant animal in 

 the world — Importance of his coiporeal structure — The causes 

 which liave led to bis becomiug erect — Consequent changes of 

 structure — Decrease in size of the canine teeth — Increased size 

 and altered shape ot the skull — Nakedness — Absence of a tail^ 

 Defenceless condition of man . . 2fi 



CHAPTER III. 



COJIPABISON OF THE MeNTAL POWERS OF MaN AND THE LoWEB 



Animals. 



The difftrence in mental power between the highest ape and the 

 lowest savage, immense — Certain instincts in common — Th« 

 (■motions^— Curiosity — Imitation — Attention — Memory — Imagi- 

 nation- ■ Reason — Progressive improvement — Tools and weapoUi-. 



