SIXTH ANNUAL RECEPTION. 77 



Exhibited by Professor J. J. Stevenson, of New York 

 University. 



6. a. Map Showing the Geology of Maryland, Scale 2" to 



THE Mile. 



b. Map showing the relative elevations of Maryland, scale 

 2" to the mile. 



c. Map showing the physiographic provinces of Mary- 

 land, scale 2" to the mile. 



d. Map showing the divides and drainage basins of Mary- 

 land, scale 2" to the mile. 



e. Framed chart showing Maryland building and decora- 

 tive stones. 



f. Framed chart showing the physical features of Mary- 

 land. 



g. Framed chart showing the quarries and quarry areas 

 of Maryland. 



]i. Reports of the Maryland Geological Survey. 



Exhibited by the Maryland Geological Survey through 

 Professor W. B. Clark, State Geologist. 



7. Series of Specimens Illustrating the Effect of Miner- 



ALOGiCAL Composition upon the Fusibility of Clay. 

 Exhibited by Dr. Heinrich Ries, Cornell University. 



8. Series of Specimens of Rocks, Diagrams, Photographs 



AND Ores, Illustrativl of the Northern Black 

 Hills, South Dakota. (Paper read before the Acad- 

 emy, March 20, 1899.) 



Exhibited by John D. Irving, Fellow in Geology, 

 Columbia University. 



9. Series of Specimens of Rocks, Illustrating the Geology 



of Sonora, Mexico, now under Investigation. 

 Exhibited by B. F. Hill. 



10. a. Ten Large Thin-sections of Adirondack Rocks, Illus- 



trating Dynamic Metamorphism. 

 b. Specimens, Plates and Photographs, Illustrating 

 the Geology of the Titaniferous Magnetites. 

 (Paper read before the Academy, February 20, 1899.) 

 Exhibited by Professor J. F. Kemp. 



