238 Miscellaneous Intelligence. 



J. E. Dextox: The theoretical effect of errors of observation in calorimeter 

 experiments for determining the latent heat of steam. Improved arrangement 

 of Siemen's platinum electrical pyrometer. 



T. C. Mende.vhall and John Mack : The uniformity of plauimeter measure- 

 ments. 



Frank C. Wagner: An analysis of dynamo design. 



P. H. Dudley: Mechanical inspection of railway tracks and results obtained. 



Mansfield Merrimax: The theories of the lateral pressure of sand against 

 retaining walls. 



H. C. Taylor: The question of Isthmian transit. 



R. E. Peavy: The Engineering features of the Nicaragua Canal route 



J. F. Bransford: Climatic and sanitary notes on the Nicaragua Canal route. 



J. W. Miller: Historical and geographical notes concerning the Nicaragua 

 Canal route. 



J. R. Haskell : National armament. 



Section E. — Geology and Geography. 



H. S. "Williams: The different types of Devonian in North America. 



Edward Ortox : The Trenton Limestone as a source of petroleum and in- 

 flammable gas in Ohio and Indiana. 



Chas. S. Prosser: Section of well at Morrisville, N. Y. The Upper Hamil- 

 ton group of Chenango and Otsego counties, N. T. 



Alexis A. Julien: A geological section at Great Barrington. Mass. 



N. H. "Wixchell : The granite and quartzite contact at the Aurora mine, 

 Gogebic iron range. Ironwood, Michigan. The " slate conglomerate" of the orig- 

 inal Huronian the parallel of the Ogishke sandstone of Minnesota. The 

 Animike black slate and quartzite and the Ogishke conglomerate of Minnesota, 

 the equivalent of the original Huronian. An unconformable conglomerate lying 

 on the Marquette iron-ore rocks at Negaune and Ishpeming, Michigan. The 

 " Huronian System." 



J. Edgar : The Potsdam Sandstone in Southern Pennsylvania. 



E. W. Claypole : The four great sandstones of Pennsylvania. "Lake Cuya- 

 hoga," a study in glacial geology. 



J. F. Kemp : Notes on the eruptive rocks of the Archsean in the New Tork 

 and New Jersey Highlands. 



Joseph F. James : Geological section of Southwestern Ohio. 



H. P. Cushing : Notes on the Berea grit in Eastern Ohio. 



Joseph E. Willet : The southern drift. 



Theo. B. Comstock : Notes on the extinct thermal springs of Arkansas. The 

 unknown geology of Illinois. 



Robert T. Hill : Notes on the Texas section of the American Cretaceous. 



"W. B. Scott : The Upper Eocene lacustrine formations of the United States. 



J. "W. Spencer : Sand-bowlders in the drift, or subaqueous origin of the drift 

 in central Missouri. Notes on the theory of glacial motion. Glacial erosion in 

 Norway, with some notes on northern ice action. 



W. J. McGee : The Columbia formation. 



John C. Branner : The origin of the terraces along the Ohio river between 

 Cincinnati and Louisville. Southern limit of the drift in Kentucky and Indiana. 



0. H. Hitchcock : Genesis of the Hawaiian islands. 



H. C. Hovey: A description of two caverns near Manitou, Colorado. 



Fred. P. Dewey : Photographs of the interior of a coal mine. 



Jos. F. James and U. P. James : The monticuliporoid corals of the Cincin- 

 nati group, with a critical revision of the species. 



Chas. D. "Walcott: Discovery of fossils in the lower Taconic of Emmons. 

 Section of the lower Silurian (Ordovician) and Cambrian strata in central New 

 York, as shown by a deep well near Utica. 



L. C. Johnsox : Notes on the geology of Florida. 



J. S. Newberry: The plants and fishes of the triassic rocks of New Jersey 

 and the valley of the Connecticut. The fossil fishes of the Cleveland shale. 

 The flora of the Amboy clays. 



"William M. Fontaine : The flora of the Potomac formation in Virginia. 



