FOURTH FLOOR 



EAST CORRIDOR 



Immediately in front of the elevators is a wall case in 

 which recently acquired specimens are installed. Near the 

 stairway landings are fossil skeletons of the Mosasaur, or 

 great marine lizard from the chalk beds of Kansas, and a 

 number of Ichthyosaurs, from the slate quarries of Holz- 

 maden, Germany. One of the Ichthyosaurs contains the 

 skeletons of seven young, unborn, partly within and partly 

 drifted out of the body cavity. 



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