Illustrations xi 



FIGURE PAGE 



57. RESPIRATORY ORGANS OF ALLIGATOR . . 198 



58. HEART OF ALLIGATOR .... Facing 202 



59. VEINS OF THE POSTERIOR REGION OF ALLI- 



GATOR ....... 204 



60. VEINS OF THE ANTERIOR REGION OF THE ALLI- 



GATOR ....... 209 



61. ARTERIES OF THE POSTERIOR REGION OF THE 



ALLIGATOR . . . . . .213 



62. ARTERIES OF THE ANTERIOR REGION OF THE 



ALLIGATOR 215 



PLATES VI TO XXVIII. A SERIES OF FIGURES 

 TO ILLUSTRATE THE DEVELOPMENT OF THE 

 AMERICAN ALLIGATOR . . Following 342 



