LIST OF plates; 



Facing page. 

 FronTiSPIKCE. George Brown Goode (1857-1896), assistant secretary of the 



Smithsonian Institution. From a photograph by T. W. vSmillie Title. 



1. John James Abert (1787-1863), chief of U. S. Topographical Engineers. 



From a steel engraving by J. C. Buttre 66 



2. LouisAgassiz( 1 807- 1 873), naturalist. From a steel engraving of a painting. 68 



3. John James Audubon (1780-1851), naturalist. From a photograph of a 



lithograph by J. Lion, i860 70 



4. Don Felix d'Azara (1746-181 1 ), naturalist. From an engraving by Lizars . 74 



5. Alexander Dallas Bache (1806-1867), superintendent U. S. Coast Survey. 



From a photograph of a painting 80 



6. Spencer Fullerton Baird (1823-1S87), secretary of the Smithsonian Insti- 



tution. From a photograph by T. W. Smillie 86 



7. Joel Barlow (1754-1812), author of the Columbiad. From an engraving 



by A. Smith of a painting by Robert Fulton 90 



8. Frederick Augustus Porter Barnard ( 1809-1889), president of Columbia 



College, New York. From an engraving by E. G. Williams and Brother. 94 



9. John Gross Barnard (1815-1882), army engineer. From an engraving by 



A. H. Ritchie 98 



ID. Benjamin Smith Barton (1766-1815), physician and naturalist. From an 



engraving by Gobrecht 102 



11. William Bartram (1739-1823), botanist. From an engraving by T. B. 



Welch of a painting by C. W. Peale 106 



12. Nathaniel Bowditch (1773-1824), mathematician. From an engraving by 



J. Gross of a drawing by J. B. Longacre of the bust by Frazee no 



13. Mathew Carey (1760-1839), author. From an engraving by Samuel Sar- 



tain of a painting by John Neadle 1 14 



14. Samuel de Champlain (1567-1635), French explorer. From an engraving 



by J. A. O'Neill of a painting by Han:el of the Moncornet portrait. ... 1 18 



15. Pierre Francois Xavier de Charlevoix ( 16S2-1761 ) , French explorer. F'rom 



an engraving by J . A. O'Neill 122 



16. De Witt Clinton (1769-1828), chief promoter of the Erie Canal. From an 



engraving by A. B. Durand of a painting by Ingham 1 26 



17. George Hammell Cook (1818-1889), state geologist of New Jensey. From 



a photograph 130 



iS. Darius Nash Couch (1822-1897), army explorer. From an engraving by 



J. C. Buttre of a photograph 134 



19. Charles Patrick Daly (1816-1899), geographer. From a photograph 138 



20. James Dwight Dana (1813-1895), geologist. From an engraving by 



H. W. Smith 142 



'The illustrations that accompany this volume are arranged alphabetically. 



IX 



