viii. PAPERS kp:ai) kefore the academy. 



F. J. H. MERRILL. 



On the Geology of Long Island {title) 25 



Geological Structure and Age of the Deposits at Gay Head, Mass. (title).. ..IS 



CHARLES E. MOLDENKE. 



The Language of the Ancient Egyptians and its Monumental Records 

 (illustrated) 60 



H. A. MOTT. 



An Inquiry into the Validity of the Ordinary Theory of Sound Waves (title) 34 



J. S. NEWBERRY. 



Notes on a Recent Visit to Northern Montana ; its Scenery, Resources and 

 Geological Structure (title) 2 



The Food and Fibre Plants of the North American Indians (title) 35 



The Ancient Civilizations of America ; their Origin and Antiquity (ab- 

 stract) 47 



Some Recent Discoveries of Rock-Salt in Western New York 55 



ERMINNIE A. SMITH. 



The Iroquois Customs and Language (title) 34 



W. P. TROWBRIDGE. 

 On the Trigonometric and Topographic Surveys of the United States (iiYfc). 58 



CHARLES B. WARING. 



Experimental Studies on the Gyroscope, Gyrostat and other Rotating Bo- 

 dies 36 



