LOB EC K, NEW YORK CITY, A PHYSIOGRAPHIC CENTER 37 



Provinces after Fenneman, slightly modified, descriptions of provinces 

 after Fenneman and Johnson; Fig. 8, Map of terminal moraine from 

 Islip, X. Y., sheet; Fig. 10, Map of dmmlins from Clyde, X. Y., sheet, 

 sketch after Tarr; Fig. 13, Cuestas and lowlands of western Xew York, 

 after map in Xiagara Folio ; Fig. 21, Susquehanna Water Gap, from Xat. 

 Geog. Mag. ; Fig. 23, Lake George, after Detroit Photo. Co. 



During the preparation of the diagrams the informal criticisms of Mr. 

 F. K. Morris, of the Department of Geology, Columbia University, were 

 distinctly helpful. 



BIBLIOGRAPHY 



The references below are grouped according to physiographic provinces. 

 Those preceded by a star are deemed most important from the physi- 

 ographic viewpoint. In the text the numbers following the names of 

 authors refer to this list. 



The chief journals and periodicals to which reference may be made 

 are : American Journal of Science, American Museum Journal, Annals 

 of the Association of American Geographers, Annals of the Xew York 

 Academy of Sciences, Appalachia, Bulletin of the Geological Society of 

 America, Geographical Eeview (formerly Bulletin of the American Geo- 

 graphical Society), Journal of Geography, Journal of Geology. Xational 

 Geographic Magazine, and Science. The standard text-books on geology 

 and physiography contain much information upon the features of the 

 northeastern United States. 



The most convenient bibliographies are those provided in the follow- 

 ing bulletins of the U. S. Geological Survey, which are indexed by both 

 subject and author: 44 (1886), 75 (1887-1889), 91 (1890), 99 (1891), 

 127 (1732-1891), 130 (1892-1893), 135 (1894), 146 (1895), 149 (1896), 

 156 (1897), 162 (1898), 172 (1899), 188 and 189 (1892-1900), 203 

 (1901), 221 (1902), 240 (1903), 271 (1904), 301 (1901-1905), 372 

 (1906-1907), 409 (1908), 444 (1909), 495 (1910), 524 (1911), 545 

 (1912), 584 (1913), 617 (1914), 645 (1915), 665 (1916). 



I. — General 



*1. Bowman, I. 1911. Forest physiography. 



2. Brigham, A. P. 1903. Geographic influences in American history. 



3. Davis, W. M. 1898. Physical geography. 



4. Emerson, F. V. 1908. Geographic interpretation of Xew York city. 



Bull. Am. Geog. Soc, XL, p. 587. 



5. Fenneman, X. M. 1914. Physiographic boundaries in the U. S. Ann. 



Assn. Am. Geog., IV, p. 84. 



