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sippi; 2d, A History of the Watches ; 3d, Observations on the 

 OhicJcasaws and Ohoctaws ; 4th, 3Ieteorological Observations. 



From 1820 to 1822, he contributed the followmg memoirs 

 to the Journal of the Academy of Natural Sciences : — A G-eo- 

 grai^hical Description of the Valley of the Mississippi. De- 

 scriptions of rare Plants recently introduced into the Crardens 

 of Philadelphia. Observations on the genus Orysopsis. Re- 

 marks on the Species of Corallorhiza indigenous to the United 

 States. On the Serpentine Rocks of Hoboken^ ayid the Minerals 

 tvhich they contain. About the same time, he was also en- 

 gaged in mineralogical studies, with some rude attempts at 

 chemical analysis ; and in delivering lectures on Botany to 

 classes of young men. His style of lecturing was not remark- 

 able for its eloquence, but he always succeeded in inspiring 

 his pupils with his warmth and passion for his favorite science. 



At the end of 1822, Mr. Nuttall was called to Cambridge, 

 to fill, in the Harvard University, the place of the late Mr. 

 Peck. He was not elected Professor of Natural History, but 

 simply appointed Curator of the Botanic Garden, the fund 

 of the Massachusetts Professorship of Natural History being 

 insufficient for the support of a professor. Mr. Nuttall had 

 consequently but light duties of instruction assigned to him. 

 He delivered only occasional lectures on Botany to the stu- 

 dents and residents of Cambridge ; his time was almost ex- 

 clusively devoted to the culture of rare plants and to his 

 favorite studies, mineralogy and ornithology included. While 

 at Cambridge, Mr. Nuttall led very much the same retired 

 life that he had done in Philadelphia ; he made few acquaint- 

 ances, and the late Mr. James Brown was, perhaps, his only 

 intimate friend. The house which he then occupied, and 

 which is now the present habitation of the Professor of 

 Botany, retains yet traces of some ingenious arrangements to 

 favor his recluse habits. 



During the first six or seven years of his residence in 

 Cambridge, Mr. Nuttall paid a visit to Philadelphia in com- 

 pany with several gentlemen of Boston, on their way to the 

 coal and iron districts of Pennsylvania. Joined by Dr. Pick- 

 ering, they proceeded to Pottsville ; hence over the mountains 



