Miscellaneous Intelligence. 333 



Section of Chemistry. 



R. B. "Warden : Dynamical theory of albuminoid ammonia. 



C. E. Monroe: Molugrams and molugram liters; Explosiveness of the Cellu- 

 loids. 



R. Hitchcock: Action of light on silver chloride: Method of mounting Photo- 

 graphic prints on paper ; Spectrum Photography. 



F. W. Clarke: The Chemical composition of the Mica group. 



E. Hart : New Bottle for Hydrofluoric Acid. 



H. W. Wiley: Some peculiarities of Butter ; Composition. of the Seed of Cala- 

 canthus Plaucus. 



M. A. Scovell: Notes on the estimation of Nitrogen by the Kjeldahl Method. 

 Adolph Bayer, Munich, Germany, and A. W. Noyes : Succinylo-succinic Acid. 

 Albert B. Prescott : Estimation of bromine in presence of chlorine. 

 W. 0. Atwater : On the acquisition of atmospheric Nitrogen by Plants. 



F. Hoffmann : Food preparation. 



C. C. James: The composition of Ontario Oats. 

 L. P. Kinnicutt: Jadeite and Nephrite. 



Section of Mechanical Science and Engineering. 



0. Chantjte: Results of recent experiments to determine the resistance of air 

 to inclined planes in motion, with applications to the problems of soaring Pigeons ; 

 The Preservation of Timber. 



E. B. Perry: Experimental Comparison of the Performance of Steam Injectors 

 vs. a Duplex Steam Pump. 



J. E. Denton : Relative Economy of modern Air-Compressors ; Probable prin- 

 cipal cause of superior economy of Multiple Expansion Engines. 



M. E. Cooley : Performance of a pumping engine ; Note on performance of a 

 Vibrating Piston Engine. 



T. Gray: New device for autographic registry in tension tests. 



W. R. Warner: Notes on anti-friction construction for revolving mechanism 

 for Observatory domes. 



Section of Geology and Geography. 



"W. J. McGee : Topographic types of N. E. Iowa. 



G. F. Wright: Lake-ridges of Ohio and their probable relations to lines of 

 glacial drainage into the Susquehanna Valley. 



C. R. Dryer: Moraines of the Wabash-Erie region ; the Irondequoit glacier. 



F. Leverett : Glacial phenomena of Northern Indiana and northeastern Illinois. 

 A. S. Bickmore : Attractive scenery of our own land. 



E. Jones : The Mastodon of Kent and what we know about it. 

 Sir Wm. Dawson: New fossil plants from the Erian and Carboniferous, and 

 the characters and affinities of the Paleozoic Gymnosperms. 

 H. C. Hovey: Mammoth Cave. 



H. S. Williams : The Devonian System of South Devonshire. 

 E. W. Claypole: The reality of a level of no Strain in the crust of the Earth. 

 A. Winchell : The Geological Position of the Ogishke Conglomerate. 

 R. Bell: The Origin of Gneiss and other Primitive Rocks. 



E. 0. Hovey: Observations on the Trap Ridges of the East Haven (Conn.) 

 Region. 



N. H. Winchell and H. V. Winchell : On a possible chemical origin of the 

 Iron Ores of the Keewatin in Minnesota. 



F. L. Nason and W. F. Ferrier: Notice of some Zircon rocks in the Archeean 

 Highlands of New Jersey. 



J. F. Kemp : Trap Dikes in the region about Lake Champlain and the Adiron- 

 dacks. 



C H. Hitchcock : Field studies of the Hornblende Schist. 



C. A. "White: Remarks on the Cretaceous of Northern Mexico. 



Robert Hay: On a Kansas salt mine. 



