ILLUSTRATIONS 



PROFESSOR JAMES D. DANA . . . . Frontispiece 



THE TRACK OF THE UNITED STATES EXPLORING EXPEDI- 

 TION, 1838-42 Facing p. 72 



JAMES D. DANA (1843), AGE 30 " 142 



PROFESSOR DANA'S HOME !6o 



PROFESSOR DANA'S STUDY, IN HIS HOME " 210 



JAMES D. DANA (FEBRUARY, 1895), IN HIS 830 YEAR . . " 270 



IX 



