680 



Verbal Coinnninications. 

 Barker. Tage. 



On a New Lecture Galvanometer 438 



Blasius. 



On the Tornado of Avigust 22, 1851 14 



Blodget. 



On Sudden Variations of Temperature 175 



On the Vertical Descent of the Atmosphere 439 



Briggs. 



On the Tornado of August 22, 1851 14 



On an Explosion at the Hospital 419 



On Some Principles of Meteorology 641 



Brinton. 



On Dr. V'alentini's Memoir 643 



Britton. 



On Rocky Mountain Coal Beds , 187, 191 



On Burettes 188 



Carson. 



On the Franklin Portrait 433 



Chase. 



On the Velocity of Light 9 



On a New Plan of Life Insurance 16 



OnMyer's Theory of Heat. 18 



On ( "Josmical Evolution 177 



On the Rainfall in the Years of .Tuplter 179 



On the Lunar Cyclical Rainfall 179 



On the Magnitude of G-ravitating Waves 420 



On the Bunsen Gas Burner 429 



On Gov. Eawson's Meteorological Observations 430 



On the Signal Service Charts 640 



On the Beginnings of Development 641 



Cope. 



On the Osteology of the Artiodaetyls 7 



On the Cretaceous Coal Beds 7 



On the Extinct Batraehia of North America 10 



On Orton's Expedition 11 



On Colorado Fish 13 



On the Zoology of a Temporary Pool 14 



On Eobasileus Galeatus 17 



On the Miocene Vertebrata of New Jersey 429 



On Architectural Remains in New Mexico 636 



Cresson, C. M. 



On Thompson's Colorimeter 10 



On the Effects of a Ligntning Stroke 10 



On Analysis of Mammoth Coal , 175 



On a Locomotive Boiler Explosion 180 



On Rocky Blountain Coals 191 



On a New Bunsen Gas Apparatus 429 



On Sections of the Ellengowan Coal 429 



On Thermo-electric Currents 440 



On the Action of Magnetism on Iron 636, 638 



Cresson, J. C. 



On the Purchase of Michaux Oaks 300 



