THE FLORA OF NORTH AMERICA. 23 
interested in water plants; contributed to Flora Danica, and is 
the author of 
Tentamen Hydrophytologia Danice [which also included Greenland], 1819. 
Jens Wilken Hornemann was born at Marstal, Aeré, Denmark, 
the 6th of March, 1770, received the honorary 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: 
Dansk Oekonomisk Plantelwre, 1837. 
Hortus botanicus Hafniensis, 1813— 15. 
Bemirkninger om Vegetationen i Grénland samt nogle der af Wormskjéld og 
Gieseke fundne sjeldne Planter, 1815. 
Om Groénlands flora, 1832. 
Flora Danica, Vols. 8—13, 1810—’40. 
C. West Indies. 
Peder Eggert Benzon was born at Vesterskov on Lolland, Den- 
mark, the 27th of October, 1788. He took his pharmaceutical 
examination in 1814, 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- 
ernment. In 1848 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. 
Peter Rabn was born in Drébak, 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. tn 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. 
