LIST OF ILLUSTRATIONS 



KIG. PACK 



1. FACE OF AX EMBRYO FIVE MONTHS OLD, with the embryonic 



covering of hair. After A. Ecker ..... 4 



2. THE DISPOSITION OF THE HAIR-TRACTS ON THE HUMAN BODY. 



After Eschricht 6 



3. THE VERTEX COCCYGEUS OF THE HUMAN EMBRYO. After A. 



Ecker 7 



4. FOVEOLA COCCYGEA IN A HUMAN EMBRYO. After A. Ecker . 7 



5. AND. JEFTICHJEFF, the " Russian Dog-man " .... 7 



6. A, JULIA PASTRANA. B, HAIRY AINO, from the north-east 



coast of Yesso. After D. Macritchie 8 



7. YOUNG ORANG-UTAN, head from the side 9 



8. YOUNG ORANG-UTAN, head from the front . . . .10 



9. DIAGRAMMATIC REPRESENTATIONS OF THE EARLY DEVELOP- 



MENT OF THE LEADING TYPES OF MAMMARY GLANDS. Modi- 

 fied from Gegenbaur . . . . . . . .12 



10. DISSECTIONS OF A BROODING -FEMALE OF Echidna hystrix. 



A, Ventral aspect ; B, dorsal inner view . . . .13 



11. THE "MAMMARY LINE" IN THE PIG'S EMBRYO, AT DIFFERENT 



STAGES. After O. Schultze 15 



12. THE ARRANGEMENT OF THE TEATS IN A DOG . . .16 



13. EXAMPLE OF POLYMASTY. After D. Hansemann . . .19 



14. CASE OF POLYMASTY IN A YOUNG JAPANESE GIRL NINETEEN 



YEARS OLD . . 21 



15. FRONT VIEW OF THE BODY OF A HOSPITAL ASSISTANT, TWENTY- 



TWO AND A HALF YEARS OLD, showing teats and hair vortices. 

 After 0. Ammon 23 



16. SCHREINER VON ScHONACH, of the 16th Baden Infantry 



Regiment, showing supernumerary teats and teat areas. After 



O. Ammon . . , . . . .24 



17. Two YOUNG HUMAN EMBRYOS, showing freely projecting tail . 27 



18. TAILED HUMAN EMBRYO. After L. Gerlach , 28 



