xii LIST OF ILLUSTRATIONS 



Fir.. PAGE 



00. Successive stages in the regression of the comb of the 



COCK after castration ...... 90 



From Marshall's " Physiology of Reproduction.'''' 



fil. OVARIOTOMTSED BROWN LEGHORN HEN .... 95 



From Marshall's " Physiology of Reproduction" 



02. OVARIOTOMISED I'ULLET WITH PLUMAGE AND SPURS OF MALE 96 



From Marshall's " Physiology of Reproduction." 



(S'^. Normal Rouen drake 96 



Fro?n Marshall's " Physiology of Reproduction." 



64. Normal Rouen duck ....... 97 



From Marshall's " Physiology of Reproduction." 



65. OvARioToansED Rouen duck ...... 97 



From Marshall's " Physiology of Reproduction." 



66. Transverse section through uterus of rat after ovario- 



tomy .......... 99 



From Marshall's " Physiology of Reproduction." 



67. Section through rat's kidney, into the tissue of \\TncH 



AN ovary had been TRANSPLANTED . . . .100 



From the " Quarterly fournal of Experimental Physiology." 



68. Section through uterine mucosa of rabbit nine days after 



STERILE coition ........ 102 



From Marshall's " Physiology of Reproduction." 



60. Section through uterine mucosa of rabbit twenty-four 



DAYS after sterile COITION . . . . . .103 



From Marshall's " Physiology of Reproduction." 



70. Photograph of mammary tissue of virgin rabbit . . 105 



From Marshall's " Physiology of Reproduction." 



71. Photograph of mammary glands of pseudo-pregnant 



rabbit fourteen days after GiSTRUS .... 105 



From Marshall's " Physiology of Reproduction." 



12. Experimentally produced placenta of pseudo-pregnant 



rabbit ; section op uterus . . . . . .107 



From Marshall' s " Physiology of Reproduction." 



Diagram illustrating Mendelian inheritance . .118 



1)l\gram illustrating sex determination . . . 125 



