xvi LIST OF ILLUSTRATIONS 



. FIG. FACE 



1025. Development of feather 383 



1026. Columba livia, pterylosis 384 



1027. ,, ,, bones of trunk 386 



1028. ,, ,, cervical vertebra 386 



1029. ,, ,, sacrum of nestling 387 



1030. ,, ,, skull of young specimen 388 



1031. Diagram of Bird's skull .389 



1032. Columba livia, hyoid apparatus 390 



1033. ,, ,, columella auris 390 



1034. ,, ,, bones of left wing 391 



1035. ,, ,, manus of nestling 392 



1036. ,, ,, innominate of nestling 392 



1037. ,, ,, bones of hind-limb 393 



1038. ,, foot of embryo 393 



1039. ,, ,, muscles of wing 395 



1040. ,, ,, dissection from right side 396 



1041. ,, ,, lungs and trachea 398 



1042. Diagram of air-sacs of a Bird 399 



1043. Columba livia, heart 400 



1044. ,, ,, vascular system 402 



1045. ,, brain 404 



1046. ,, ,, dissections of brain 405 



1047. ,, eye 406 



1048. ,, ,, auditory organ 406 



1049. ,, ,, urinogenital organs, male 407 



1050. female ..... 407 



1051. Apteryx australis 411 



1052. ,, ,, skeleton 412 



1053. Hesperornis regalis ,, 413 



1054. Ichthyornis victor ,, . . 414 



1055. Eudyptes antipodum 415 



1056. Archaeopteryx lithographica 418 



1057. ,, skull 419 



1058. ,, ,, manus 419 



1059. Opisthcomus and Apteryx, wings 421 



1060. Gypaetus and Ardea, pterylosis 422 



1061. Casuarius, feather 423 



1062. Gallus, Turd us, Vultur, Procellaria, and Casuarius, sterna . . 425 



1063. Eudyptes pachyrhynchus, skeleton . . . . . . . 426 



1064. Apteryx mantelli, skull of young specimen, side view . . . 427 



1065. ,, ,, ,, ,, ,, dorsal view . . 428 



1066. Anas boschas, skull 429 



1067- Ara ararauna, ,, 429 



1068. Apteryx mantelli, shoulder-girdle 430 



1069. Dinornis robustus, skeleton . 431 



1070. Sterna wilsoni, fore-limb of embryo 432 



1071. Apteryx australis, left innominate 432 



1072. Gallus bankiva, innominate of embryo 433 



