LIST OF ILL USTRA TIONS. xi 



FIG. PAGE 



50. MALLEOLI OF MAN AND CHIMPANZEE ... 99 



51. SUPERNUMERARY RAYS IN STAR-FISH ... ... 103 



52. FEATHERS AND AFTERSHAFTS ... ... 105 



53. GEMINATED TEETH ... ... ... ... 106 



54. REDUPLICATED ANTLER OF MOOSE ... ... 107 



55. SUPERNUMERARY DIGITS IN A CHILD ... ... Io8 



56. SUPERNUMERARY DIGITS IN A GIBBON ... 109 



57. A DOUBLE HAND ... ... ... ... IIO 



58. MUD-FISH WITH DICHOTOMIZED LIMB ... Ill 



59. SUPERNUMERARY HIND-LEG IN A TOAD ... ... Ill 



60. SUPERNUMERARY FORE-LEG IN A FROG ... 112 



6 1. SUPERNUMERARY LEG IN A CHICK ... ... 113 



62. SUPERNUMERARY WING IN A DOVE ... ... 114 



63. SUPERNUMERARY FORE-LEG IN A SHEEP ... ... 115 



64. SECTIONS OF EMBRYO WORMS ... ... 117 



65. A TWO-HEADED COLT ... ... ... ...119 



66. A DOUBLE SHARK... ... ... ... 121 



67. A DOUBLE-HEADED SNAKE ... ... ... 122 



68. A MONSTROUS CALF ... ... ... 123 



69. A TWO-TAILEDED LIZARD ... ... ... 124 



70. A SIX-LEGGED FROG ... ... ... 126 



71. A SIX-LEGGED LAMB ... ... ... ... 127 



72. A FOUR-LEGGED CHICK ... .., ... 128 

 73- A FIVE-LEGGED FROG ... ... ... ... 129 



74. A FOUR-LEGGED DRAKE ... ... ... 130 



75. A MITRAL VALVE CONTAINING MUSCLE ... ... 136 



76. A HAIRY MAN ... ... ... ... 138 



77. A ROCK LOBSTER (CEPHALON) ... ... ... 140 



78. PILIFEROUS CORNEA OF OX ... ... 142 



79. PATAGIUM IN THE LEG OF A GIRL ... ... 143 



80. WEBBED FINGERS IN A MONKEY ... ... 145 



Si. HOUR-GLASS CONTRACTION OF THE STOMACH ... 147 



