CONTENTS. 



CHAPTER PAGE 



I. AUTOBIOQKAPHY. 1810-1843 1 



II. Eaklt Undertakings. 1831-1838 .... 29 



III. FiKST JouBNEY IN EnEOPE. 1838-1839 ... 85 



IV. A Decade of Wokk at Home. 1840-1850 . . 212 



Note on the IiiuSTKATiONS. The frontispiece portrait of Dr. 

 Gray is a photogravure from a photograph taken in 186Y. The por- 

 trait facing page 286 is from a daguerreotype taken about 1841. The 

 view of the Botanic Garden House, facing page 358, is from a drawing 

 by Isaac Sprague. 



