LIST OF ILLL STKxVTJOXS 



The Xcandertlial Man . . ..... Frontispiece 



P.VCE 



Figure 1. Distiihutioii of Stature of Amerieuii I'oys 1(1^ year.s old . 8 



Figure 2. Curve of Distribution 9 



Figure 3. Diagram illustrating a Mutation .11 



Figure 4. Diagram of ^lendelian Inheritance in the Pea . ]J 



Figure 5. Mendelian Inlieritance in ilice 14 



Figure 0. Mendelian Inheritance in Four-o'clocks l(i 



Figure 7. Diagram of Inheritance of Bodj' Cells and Tierni (ells .■]4 



Figure 8. Ilair-tracts on the Arms and Hands of Man, as compared 



with those on the Arms and Hands of the Chimpanzee 42 

 Figure 0. Front and back view of adult Human Sacrum, showing 



abnormal persistence of Vestigial Tail-muscles ... 44 

 Figure 10. Rudimentary, or Vestigial and useless, muscles of the 



Human Ear 45 



Figure 11. A series of Embryos at Three Comparable and Progres- 

 sive Stages of Development, representing four divisions 



of the class ^lammalia 47 



Figure 12. Portrait of a Young ;Malo Child. Photographed from life, 

 when the mobile feet were for a short time at rest in a 



position quite apelike 49 



Figure 13. An infant, three weeks old, supporting its own weight for 

 over two minutes. The attitude of the lower limbs, 



feet, and toes is strikingly simian 51 



Figure 14. Diagram illustrating the character and relative age of 

 Human remains and the Quaternary deposits in which 



they have been found 53 



Figure 15. Europe during the Period of !Ma.\imum Glaciation . . 54 

 Figure 16. An Alaskan Glacier sweeping down the Valley and gougin-i- 

 out Rock and Stone. A similar sitiuition existed in 

 many parts of now habitable Europe during the Glacial 

 Period .jC 



Figure 17. Top and Side view of Neanderthal Cranium ,")9 



Figure 18. A reconstruction of the Neanderthal Type of Skull 01 

 Figure 19. The Cranium of the Pithecanthropus Erectus with Tooth 



and Thigh bone (J2 



Figure 20. The Gorilla, Neanderthal Man and ^Modern Man compared 03 



Figure 21. Comparison of Crania 05 



Figure 22. Sand-pit at Maure, near HeidelWrg, where the Prehistoric 



Jaw was found Oii 



Figure 23. Comparison of Jaw of Modern Man with Jaw of Heidelberg 



Man and Chimpanzee 07 



Figure 24. Eolithic Implements .... 68 



