PAPERS READ BEFORE THE ACADEMY. Vll. 



WILLIAM ELSEFFER. 



The Plan of the Mississippi River Commission and its Relation to Natural 

 Laws {title) 48 



H. L. FAIRCHILD. 



Elephants, ancient and modern, with Reference also to the Extinction of 

 the Mammoth ; and Notes on the small Elephants lately brought to 

 this City from Farther IndXa (abstract) 19 



A. C. HAMLIN. 



Mosques of Constantinople {popular lecture) 44 



W. E. HIDDEN. 



Hanksite, a New Anhydrous Sulphato-carbonate from San Bernardino, Cal. 



{title) 79 



Minerals of Special Interest at the New Orleans Exhibition {title) 80 



A. A. JULIEN. J 



Glacial Observations in Canada and on the Northern Borders of the State 

 of New York (UtU) 43 



Meteorological and Hypsometrical Notes in the Islands of the Curacoa 

 Group, West Indies {title) 47 



JAMES F. KEMP. 



Notes on Fossil Plants from Worcester, Mass 75 



GEO. F. KUNZ. 

 On the Mining and Cutting of Gems {title) 58 



GEO. N. LAWRENCE. 



Descriptions of supposed new Species of Birds of the Families Tyrannidse, 

 Cypselidse and Columbidae {title) 34 



W. GOOLD LEVISON. 



Notes on the Temperature of Incandescence {title) 43 



D. 8. MARTIN, H. L. FAIRCHILD AND N. L. BRITTON. 



Notes upon the recently discovered Columnar Trap Exposures on the East 

 Side of Orange Mountain, N. J. {title) 4 



