PAGE 
Variation and Aetiology = 5823 
Variation . . , , 
• Teratology 
Hybrids . . 
Heredity 
Evolution 
Extinct birds ... . , 
Geography = 5827 
General 
Palaearctic Region 
Ethiopian Region 
Indian Region 
Australian Region 
Neotropical Region 
Nearctic Region . . 
Antarctica. . 
Systematic : — 
Struth io ni formes 
.. 90 
Casuariiformes 
.. 96 
Dinornithiformes . . 
.. 96 
Tinamiformes 
.. 90 
Galliformes 
. . 96 
Turniciformes 
. . 98 
Pteroclidiformes . . 
.. 98 
Columbiformes 
.. 98 
Opisthocomiformes 
.. 99 
Ralliformes 
.. 99 
Podicipedifovmes . . 
.. 100 
Oolymbiformes 
.. 100 
Sphenisciformos . . 
.. 100 
Procellariiformes . . 
.. 100 
Alciformes. . 
.. 101 
Lari formes 
.. 101 
Oharadriiformes . . 
.. 101 
Gruiformes 
.. 103 
Ardeiformes 
.. 103 
P h oenicopteri formes 
.. 104 
Anseriformes 
. . 104 
Pelecani formes . . 
.. 106 
Oathartiformes 
.. 106 
Accipitriformes , . 
.. 106 
Strigiformes 
.. 108 
Psittaciformes 
.. 109 
Coraciiformes 
.. 109 
Trogones 
.. Ill 
Coccyges . 
.. Ill 
Scansores . . 
.. 112 
Piciformes 
# # 
.. 112 
83 
83 
83 
84 
84 
84 
84 
84. 
84 
91 
91 
92 
93 
94 
94 
