90 Trans. Acad. Sci. of St. Louis. 



tions, lie spent the spring and summer of 1810 making 

 short excursions within a radius of eighty to a hundred 

 miles from St. Louis. In this manner he made an ex- 

 haustive study of the natural history of this vicinity, and 

 gathered many living specimens, which he forwarded to 

 Liverpool. Besides studying the plants in the vicinity 

 of St. Louis quite thoroughly, Bradbury explored the coal 

 and lead mines, described the sink holes and fossil re- 

 mains within twenty miles of the city, and advocated the 

 manufacture of saltpeter from the niter found in the 

 neighboring caves. 



Bradbury had intended to remove to the Arkansas 

 river, when, early in 1811, he met at St. Louis the leaders 

 of the overland Astorian expedition and gladly availed 

 himself of their invitation to accompany them. Nuttall, 7 

 with eagerness, had also embraced this opportunity to 

 gratify his ardent desire for distant travel and his pas- 

 sion for the study of Nature. They journeyed with the 

 traders for eighteen hundred miles to the fur trading 

 station among the Mandans. During their journey they 

 experienced many hardships and were in constant dan- 

 ger of losing their lives, being pursued and robbed by 

 the Indians. Bradbury fell into their hands and only 

 saved his life by taking his watch to pieces and distribut- 

 ing the works among the Indians. Nuttall, overcome by 

 fatigue and hunger, and driven to despair in the wilder- 

 ness, laid down and would inevitably have died, had he 

 not been found by a friendly Indian, who placed him in 

 his canoe and rowed him down the Missouri river to the 



7 Short, C. W. Transylvania Jour. Med. 34: 14-16. 1836. 



Durand, Elias. Proc. Amer. Phil. Soc. 7: 297-315. 1860. 



Meehan, Thos. Gardeners' Month. 2: 21-23. 1863. 



Britten, Jas., and Boulger, G. S. Biographical index of British and 

 Irish botanists. 129. 1893. 



Pop. Sci. Month. 46: 689-696. 1895. 



Youmans, W. J. Pioneers of Science in America. 205-214. 1896. 



Harshberger, J. W. Botanists of Philadelphia. 151-159. 1899. 



Spaulding, Perley. A biographical history of botany at St. Louis, 

 Missouri. Pop. Sci. Month. 1909: 52-57. 



