511 



Kirkwood. Daniel Page. 

 On the Meteors of January 2 J 501 



Leconte, John L., M. D. 



Obituary Notice of John F. Frazer 183 



Lesley, J. P. 



On the Iron Ores of the South Mountain, with a map 3 



On the Punning's Creek Fossil Ore Bed, with a map 156 



Description of a Micrometer for Field Note Plotting 233 



A study of the Structure and Erosion of Brush Mountain, with a map 503 



Lesley, Joseph 



The Outcrop Belt of the East Kentucky Coal field, with a map 270 



Marsh, O. C. 



On the Gigantic Mammals of the American Eocene 255 



P 



An Acoustic Phenomenon in the Rocky Mountains 499 



Sellers, W. Coleman 



D. J. Holnian's Device for the Microscopic Examination of Fluids 180 



Verbal Communications, 



Allen. 



On the Fundamental Types of Aztec and other Pictorial Writing 34 



Blake. 



On Kirkaldy's Exhibition in the Building- at Vienna 506 



Blodgett. 



On the Hot Season preceding the Hurricane of the 18th of August 261 



Ckesson, C. M. 



Graduated Condenser for the Spectroscope Zi 



Frazer, Prof. 



On a convenient and cheap Device for giving an Acquired Altitude or Slope to 



a Lime-light Lanthorn 169 



On Specimens of Aztec Sculpture 210 



On Prof. Tyndall'fi Explanation of the Blueness of the Sky 261 



IIOLMAX. 



On his new Microscope Slide 169 



( )n his new Method for Observing the Circulation of the Blood 106 



Houston. 



On the Influence of the Heat-Radiation of the Full Moon 264 



Leconte. 



On tl.e Report of Strange Noises in the Rocky Mountains, made in the Jour- 

 nal of Lewis and Clarke 168 



Mr. Augustus Findler on Gravitation 25;? 



Lyman, Josiah 



On Improved Table Instruments for Plotting and Draughting 268 



Marsh. 



On Prof. Cope's Determinations of the Dates of Papers read before this Society. 182 

 Rand. 



On the Abnormal Rainfalls of August 261 



Seiler. 



On Two Magic Lantern Slides for Producing on a screen the Alternately Vi- 

 brating Waves of Light, &c 155 



