TABLE OF CONTENTS. 



CHAPTER I. 



Page. 

 The Maclurean Bra, 1785-1819 207 



Condition of geological science in the latter part of the eighteenth cen- 

 tury. Work of Giittard, Pallas, Be Saussure, Lehman, Fuchsel, Werner, 

 and Hutton. Johann Sehopf's Contribution to the Geology of Eastern 

 North America. Brief papers in the Memoirs of American Academy. 

 Supposed volcano in Connecticut. Condition of analytical chemistry. 

 Benjamin Be Witt on the origin of the drift. Theories of Benjamin 

 Franklin relative to earth history. Paleontological work of Thomas 

 Jefferson. Rembrandt Peale's account of the mammoth. Thomas P. 

 Smith's account of the Conewago Hills. B. H. Latrobe's recognition of 

 the "fall line." Appointment of Benjamin Silliman at Yale College. 

 Silliman's Mineralogy of New Haven. His account of the Weston mete- 

 orite. James Mease's geological account of the United States. William 

 Maclure's Observations on the Geology of the United States. Sketch of 

 Maclure. S. Godon's mineralogical observations. Establishment of 

 Bruce's Mineralogical Journal. Samuel Akerly's geological account of 

 Dutchess County, N. Y. J. Corre de Serra's ideas on soil formation. 

 Jefferson's views regarding the Natural Bridge of Virginia. "Views of 

 Francis W. Gilmer and Elias Cornelius on the same. Parker Cleaveland's 

 Elementary Treatise on Mineralogy and Geology. Sketch of Cleaveland. 

 Second edition of Maclure's observations. Establishment by Silliman of 

 the American Journal of Science. J. F. and S. L. Dana's Geology and 

 Mineralogy of Boston. S. L. Mitchill's Observations on the Geology of 

 North America. Mitchill's ideas relative to the Great Lakes and the 

 drift. Edward Hitchcock's first geological paper. Amos Eaton's Index 

 to the Geology of the Northern United States. Eaton's conjectures 

 respecting the formation of the earth. Organization of the American 

 Geological Society. H. R. Schoolcraft's explorations. S. H. Long's 

 expedition to the Rocky Mountains. Edwin James's suggestions as to 

 artesian wells in the arid regions. Geological notes by Silliman, Olmsted, 

 and Atwater. Akerly's essay on the Geology of the Hudson River. 



CHAPTER II. 

 Tin Eatonian Era, 1820-29 251 



Generalities. Second edition of Eaton's Index. Eaton's views relative 

 to the origin of the continents and of caves. Early suggestions as to over- 

 turned folds. Eaton's survey of Rensselaer County, New York. J. B.Gibson 

 on trap rocks of the Conewago Hills. Nuttall's observations on geology. 

 H. H. Hayden's geological essays. Hayden's views as to origin of the 

 coastal plain and on rock decomposition. Sketch of Hayden. J. W. 

 Wilson's criticism of the hypotheses of Volney and Mitchill. Thomas 

 Cooper's ideas concerning volcanoes. Sketch of Cooper. Supposed human 



nat mis 1904 13 193 



