186 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



The very large part of the material, which was the foundation 

 of Schweinitz's two works, especially of the portions relating to the 

 rusts, was secured by himself. He collected over a radius of thirty 

 miles or so about Salem, North Carolina, and probably over even a 

 wider radius about Bethlehem, Pennsylvania, the two localities in 

 America where he resided. A very few collections were made upon 

 his trips to more distant points, and some specimens were sent 

 to him by his correspondents, especially by Torrey and Halsey, of 

 New York, and Collins of Philadelphia, while a few were handed to 

 him by friends whose names appear at times upon the packets, 

 particularly Detwiler and Denke. 



The earliest biographical account of Schweinitz is that by Walter 

 R. Johnson, read before the Philadelphia Academy of Sciences, 

 May 12, 1835, a little more than a year after his death. It has been 

 the source of information for many later sketches, notably those by 

 Morgan,^ Kellerman,'^ Shear, ^° Harshberger,^^ and Lloyd. ^- Other 

 writers have added various facts, obtained from Schweinitz's de- 

 scendants, especially Gore,^" Youmans,^* Lehman, ^^ and Shear & 

 Stevens.^® 



The three articles by Shear & Stevens were the result of ex- 

 tended researches regarding the history of Schweinitz's collections 

 of fungi, his methods of work, and the present disposition of his 

 specimens. Manuscript copies of the last two papers, as well as the 

 one on Ezra Michener (Bull. Torrey Botanical Club, 44:547-558, 

 Dec, 1917) by the same authors, were generously loaned to the 

 writers while this article was in preparation. Most of the works 

 of various kinds referred to by the several authors have also been 

 at the disposal of the writers. They have also consulted the manu- 



^Bot. Gaz., 9: 17-19, 1884. 

 ^Jour. Myc, 2: 31-34, 1886. 

 ^0 Plant World, 5 : 45-47, 1902. 



11 "The Botanists of Philadelphia," 127-132, 1899. 



12 Mycological Notes, No. 44, 1916. 



13 Jour. Elisha Mitchell Sci. Soc, 3 : 9-25, 1886. 



^*Pop. Sei. Mo., 44: 833-840, 1894; and "Pioneers of Science in Amer- 

 ica," 167-175, 1896. 



^^ The Wachocia Moravian, is^'*- : 4-6, 1904. 



16 U. S. Dept. Agric. Bull. no. 380: 1-82, Jan., 1917; Mycologia, 9: 191- 

 204. 333-344, July, Nov., 191 7. 



