THE BOTANISTS OF PHILADELPHIA. 141 



and industrious farmer should extirpate from his soil. This 

 work was one of great practical value, and there is good 

 reason to believe that its influence produced a beneficial 

 effect upon husbandry, not only in Chester County, but 

 elsewhere. 



The deep interest he always felt in every votary of 

 natural science, together with a strong personal attachment 

 for a friend, induced him at an earlier day (about 1843) to 

 collect together the letters, memoranda, etc., of Dr. William 

 Baldwin, a native of his own county, who also was pas- 

 sionately devoted to botany, but who died at an early age 

 while on the expedition up the Missouri, under Major 

 Long. These remains were given to the world in a volume 

 entitled " Reliquiae Baldwinianse." * 



The pioneers of botany in Pennsylvania were Humphry 

 Marshall and John Bartram, the former resided near West 

 Chester, the latter near Philadelphia. Dr. Darlington col- 

 lected, in 1849, such portions of their correspondence as 

 still remained in existence, comprising, together with their 

 own letters, those of many eminent botanists of the day, 

 and published them in one large volume, with illustrations 

 of their homes, under the title of " Memorials of Bartram 

 and Marshall." f 



This correspondence of our earlier botanists affords a 

 pleasant insight into their scientific labors, and shows the 

 dangers they underwent and the difficulties they had to 

 encounter in the early settlement of the country, during 

 their expeditions into the wilderness in the prosecution of 

 their favorite science. 



* IMS— Beliquice Baldwiniance. Philadelphia, Kimher et Sharpless, 8 vo., 

 346 pp. effigies Baldwinl. 



I \M^— Memorials of John Bartram and Humphry Marshall, with notices of 

 their botanical contemporaries. With illustrations. Philadelphia, 8 vo., 585 pp., 2 

 tab. and autographs. 



