ACADEMY OF NATURAL SCIENCES. 29 



Schweinitz Collection. The Rev. Lewis David Von Schweinitz, 

 who died in the year 1834, bequeathed to the Academy his great 

 collection, made during a period of forty years. This herbarium 

 contained, besides the cryptogamous plants, 23,000 species. 



Most of the American species were collected by himself; but 

 many were supplied by Dr. Torrey, Mr. Leconte, Rev. Mr. 

 Dencke', Mr. J. Elliot, Mr. H. Steinhaur, and other correspond- 

 ents. The European species were supplied by Mr. Van Welden, 

 Dr. Hooker, Mr. Bentham, Dr. Schwaegrichen, Dr. Steudel, Dr. 

 Zeyher, and Mr. Brongniart. The Siberian plants were furnished 

 by Mr. Ledebour, and those of India by Dr. Wallich, and Mr. 

 H. Steinhaur. The Chinese collection was made by Mr. James 

 Read. The plants of the polar region were collected by Captain 

 Parry, and presented by Dr. Hooker ; an interesting collection 

 from Labrador, was added by Mr. Kohlmeister, a Moravian mis- 

 sionary, of that country. The South American species were 

 obtained chiefly through M. Von Martius, Dr. Huffel, and Dr. 

 Hering. Dr. Baldwin contributed 3,000 species of plants col- 

 lected by himself in Buenos Ayres, Florida, and other parts of 

 North America. 



Nuttall Collection. Mr. Nuttall, an ardent and distinguished 

 botanist, who for many years pursued his researches in various 

 parts of the United States, presented 3,000 species of North 

 American plants ; at a later period his entire exotic herbarium, 

 embracing among others, 1,500 Cape plants, collected by Marson, 

 a large number of New Holland plants, and many interesting 

 species from New Zealand, and the islands of the Pacific, collected 

 by Foster, Labillardier, and others. Subsequently, he presented 

 a complete suite of specimens collected by him in his arduous 

 journey across the Rocky Mountains, to the mouth of the Colum- 

 bia River, different parts of California, and the Sandwich Islands. 



Besides these donations from Messrs Schweinitz and Nuttall, 

 1,200 species collected in St. Domingo, by M. Poiteau, of Paris, 

 were presented by Mr. Isaac R. Jackson. 



Mr. Wm. Hembel presented the entire herbarium of Mr. Solo- 

 mon W. Conrad, collected chiefly in Pennsylvania and New Jer- 

 sey ; and subsequently, that portion of the herbarium of the late 

 Prof. C. S. Rafinesque, containing the specimens from which the 

 descriptions in his Medical Flora have been made ; together with 

 other valuable European and Oriental plants. 



