CONTENTS. vij 



PAGE 



EBENEZER EMMONS 347 



Portrait from a photograph loaned by his son. 



JOSEPH HENRY 354 



Portrait from a photograph. 

 JAMES BLYTHE ROGERS 368 



Portrait from a photograph loaned by his daughter-in-law. 

 JOHN ERICSSON 374 



Portrait from a photograph by M. B. Brady, Washington. 

 TIMOTHY ABBOTT CONRAD 385 



Portrait from a photograph made by his nephew, Dr. Charles Conrad 



Abbott. 

 WILLIAM STARLING SULLIVANT 394 



Portrait after an ambrotype. 

 WILLIAM WILLIAMS MATHER . . 402 



Portrait from a photograph furnished by his son. 

 WILLIAM BARTON ROGERS 410 



Portrait made under the direction of Mrs. Rogers. 

 CHARLES UPHAM SHEPARD 419 



Portrait from a photograph furnished by his son. 

 SEARS COOK WALKER . . . 428 



Portrait from a photograph furnished by his brother. 

 ALEXANDER DALLAS BACHE 436 



Portrait from a photograph by F. Gutekunst, Philadelphia. 

 JAMES HENRY COFFIN 447 



Portrait from a photograph by F. Gutekunst, Philadelphia. 

 LEO LESQUEREUX 458 



Portrait from a photograph by Baker, Columbus, O. 

 MATTHEW FONTAINE MAURY 464 



Portrait after a photograph taken in 1871 by Miley & Co., Lexing- 

 ton, Va. 



JEAN Louis RODOLPHE AGASSIZ 475 



Portrait after a steel engraving by C. H. Jeens in Volume II of the 

 Life and Correspondence of Agassiz. 



ARNOLD HENRY GUYOT 492 



Portrait from a photograph by Pach Bros., New York and Princeton. 



DAVID DALE OWEN 500 



Portrait from a photograph loaned by his son. 



