The displays include: 



18. Models showing the poison mechanism of the 

 pit vipers. 



19. The four poisonous snakes of Illinois and 

 where in Illinois they have been found. 



20. A series of exhibits showing several of the 

 more harmless snakes of Illinois. 



21. Legends and misinformation about reptiles. 



22. Turtles and lizards (reptiles). Mud puppy 

 (amphibian). 



23. Protective devices of reptiles and amphibians. 



IV. IVIA3IMALS AND BIRDS 



Main HaU 



The Main Hall, the high-vaulted room which con- 

 stitutes the greater part of the Museum's exhibition 

 space, displays representative specimens of the living 



11 



