64 Forty- SIXTH Report on the 



In the adjoining room (No. 37) the Devonian corals of the 

 Upper Helderberg limestone occupy 52^ drawers. The approxi- 

 mate number of specimens in these drawers will be at least 

 11,000. Besides the drawers there are several hundred larger 

 and finer specimens of corals arranged upon tables standing in 

 the same room. A block of drawers occupied by 



Drawers. 



Hamilton group, Lamellibranchiata 130 



Hamilton group, Brachiopoda 30 



In the same room with the corals there is one table case 

 containing a remarkably fine collection of Eurypterus and Ptery- 

 gotus from the water-lime in the neighborhood of Buffalo — forty- 

 nine specimens. 



In the central room (No. 35) the drawers are occupied by a 

 serial collection of specimens, beginning with the Potsdam sand- 

 stone, and extending to the Oriskany sandstone inclusive. 

 These are occupied as follows : 



Drawers. 



Potsdam sandstone 4 



Calciferous sandstone 13 



Chazy limestone 12 



Trenton limestone , 106 



Hudson river group, Graptolites 58 



Hudson river group, miscellaneous 63 



Medina sandstone and Clinto»a group 20 



Niagara group of Waldron, Indiana 185 



Niagara group of Delphi, Indiana 4 



Niagara group of Hamilton, Ontario 16 



Water-lime formation of New York 6 



Lower Helderberg group 149 



Oriskany sandstone 16 



The total number of specimens of these several formations 

 arranged in drawers in this rO()m will exceed 37,000. 



In the same room are three table cases occupied by fossils of 

 the Niagara group of Waldron, Indiana. These fossils have 

 been made the special subjects of stud}^ and illustration in the 

 reports of the Museum. The total number of these typical 

 specimens is about 554. 



