LIST OF PLATES.' 



FronTispiKCE. George Brown Goode (1S57-1S96), assistant secretary of the 



Smithsonian Institution. I'rom a photograph 1)y T. W. Sniillie Tillt;. 



1. John James Abert (17S7-1863), chief of U. vS. Topographical Engineers. 



From a steel engraving by J. C. Buttre 66 



2. T^ouisAgassiz(iSo7-i873), naturalist. From a steel engraving of a painting. 68 



3. John James Audubon (17S0-1851), naturalist. From a photograph of a 



lithograph b}- J. Lion, 1S60 70 



4. Don Felix d'Azara (1746-1S1 1 ), naturalist. From an engraving by Lizars. 74 



5. Alexander Dallas Bache (1806-1S67), .superintendent U. S. Coast Survey. 



From a photograph of a painting 80 



6. vSpencer Fullerton Baird (1823-18S7), 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 b}^ Robert Fulton 90 



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



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



9. John Gross Barnard ( 1S15-1882"), army engineer. From an engraving by 



A. H. Ritchie 98 



10. Benjamin Smith Barton (1766-1815), physician and natiu^alist. 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 1)y Frazee no 



13. INIathew Carey ( 1 760-1 839), author. From an engraving by vSanmel Sar- 



tain of a painting by John Neadle 114 



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



by J. A. O'Neill of a painting by Haniel of the Moncornet portrait. ... 118 



15. Pierre Franjois Xavier de Charlevoix ( 1682-1761 ), French explorer. P>om 



an engraving by J . A. O'Neill 122 



16. De Witt Clinton (1769-182S), chief promoter of the Erie Canal. Fn)m an 



engraving by A. B. Durand of a painting by Ingham 126 



17. George Hammell Cook (18 18-1889), .state geologist of New Jersey. From 



a photograph 130 



18. 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 volinne are arranged alphabetically. 



IX 



