UNIVERSITY OF CALIFORNIA 

 SANA-BARABA COLLEGE LIBRART 



T&e photogravure used as a frontispiece 

 to this volume is from an original painting 

 by George P. A. Healy, London, 1838, 

 now owned by the Boston Society of Natural 

 History, Boston, to whom it was presented 

 by the heirs of Josiah Bradlee. The pres- 

 ent engraving is by John Andrew & Son, 

 Boston. 



