CONTENTS. 



CHAPTER PAOE 



I. AUTOBIOGRAPHY. 1810-1843 1 



II. EARLY UNDERTAKINGS. 1831-1838 .... 



III. FIRST JOURNEY IN EUROPE. 1838-1839 . 85 



IV. A DECADE OF WORK AT HOME. 1840-1850 . . 272 



NOTE ON THE ILLUSTRATIONS. The frontispiece portrait of Dr. 

 Gray is a photogravure from a photograph taken in 1867. 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. 



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