HISTORICAL SKETCH. 7 



MAIN FLOOR. 



Mollusca. 



167, Cephalopod evolution, morphology, etc. 



Lower Vertebrates. 



168-177, Fishes; 178, bajrachians ; 178-181, 185-190, reptiles. 



Aves. 



182-184, Lower birds, diving birds; 191-193, long-winged swim- 

 mers, etc.; 194-200, lamellirostal swimmers; 201-205, waders; 204- 

 207, shore birds; 208-209, gallinaceous birds; 210, doves, etc.; 210- 

 213, birds of prey; 214, woodpeckers, etc.; 215-226, Passeres ; 227- 

 229, pheasants; 230, European birds; 231, birds of Mexico; 232, 

 South American birds ; 233, Australian birds ; 234, albinism ; 235- 

 238, avian morphology , 290-295, local birds ; 296, flamingoes ; 297, 

 cormorant. 



Mammals. 



239-280, Arranged from edentates to primates. 



Ecological Exhibit. 



281-283, The animal and its environment. 



Large Group Cases. 



284, Musk ox; 285, Alaskan moose; 286, peccary; 287, Vir- 

 ginia deer in fall courtship ; 288, Lapland reindeer ; 289, model of 

 Chicago drainage canal ; 298, mammoth skeleton. 



ENTRANCE HALL. 



299, Mexican mountain sheep; 300, albino bison skin; 301-302, 

 collection of large mammal heads ; 303-305, relief maps of the Chi- 

 cago area; casts of extinct vertebrates above cornice. 



