THE FLORA OF NORTH AMERICA. 23 



interested in water plants; contributed to Flora IJanica, and is 

 the author of 



Tentamen Hydrophytologia Danicse [which also included Greenland], 1819. 



Jens Witken Homemann was born at Marstal, Aero, Denmark, 

 the 6th of March, 1770, received the lionorary degree of Ph. D. in 

 1836, was professor of the university of Copenhagen 1808 — '39, 

 and died in Copenhagen in 1841. He was one of Denmark's most 

 prominent systematic botanists, and added much to the knowl- 

 edge of the flora of Scandinavia. He determined the collections 

 made by Count Raben, Captain Graah, and others. Besides, he 

 published the following works which contain descriptions of North 

 American plants: 



Danslc Oekonomisk Plantelaere, 1837. 



Hortug botanieus Hafniensis, 1813 — '15. 



Beniarkninger om Vegetationen i Gronland samt nogle der af Wormskjold og 

 Gieseke fundne sjeldne Planter, ISlo. 



Om Gronlands flora, 1832. 



Flora Daiiica, Vols. 8—13, 1810— '4-0. 



C. West Indies. 



T'eder Eggert Benzon was born at Vesterskov on LoUand, Den- 

 mark, the 27th of October, 1788. He took his pharmaceutical 

 examination in 181-4, and arrived at St. Croix in 1817, where he 

 practiced as apothecary. In 1822 he was elected superintendent 

 of the natural history collections made by the order of the gov- 

 ei'nment. In 1S4S he returned to Copenhagen, where he died the 

 24th of July, the same year. He made large collections which 

 were sent to Copenhagen, and carried on an extensive correspond- 

 ence, especially with Hornemann. 



Om den vestindiske Salop, dens Dyrkning, Tilberedelse og almindelige Egen- 

 skaber, 1823. 



Peier Ral)n was born in Drobak, Norway: In 1816 he took 

 his chirurgical examination and became ship-surgeon on a Danish 

 man-of-war. As such he visited, as early as 1820, the Danish 

 West Indies and Porto Rico. In 1830 he became surgeon of the 

 garrison on St. Thomas, and died in 1839. He collected plants in 

 the Danish West Indies, Crab Island (Vieques), and Curacao. Al- 

 though a man of poor health, he made large collections and corre- 

 sponded with Prof. A. P. Candolle at Geneva and Prof. Horneman 

 at Copenhagen. 



