ILLUSTRATIONS 



FIGURE PAGE 



1. Two Human Vertebral Columns ... . . 3 



2. Photograph of Chevreul ...... 6 



3. Photograph from a Child at Birth .... 7 

 4A. \ f Child at Birth ... 8 

 4B. V Ribs and Sternum K Child at Seven Years . 8 

 40. J ( Adult, Thirty Years . . 9 



5. Section of the Head of the Thigh Bone of a Man . 12 



6. Section of the Head of the Thigh Bone of a Woman 13 



7. Cells from the Mouth of the Salamander ' . .40 



8. Example of a Syncytium ...... 44 



9. Three Transverse Sections through a Rabbit Embryo 



of Seven and One-Half Days . . . .46 



10. Portion of a Transverse Section of the Spinal Cord 



of a Human Embryo of Four Millimetres . . 48 



11. Copy of Original Figure from the Memoir of Deiters 50 



12. A Large Cell from the Small Brain of a Man . 51 



13. Various Kinds of Human Nerve Cells 53 



14. Sections of Four Sorts of Epithelium .... 55 



15. To Show the Orbital Gland of a Dog 56 



16. Two Sections of the Pancreatic Gland of a Dog . 58 



17. Section of the Human Skin, Made so that the Hairs 



are Cut Lengthwise . . . . . -59 



