WINSLOW, Jens Olaus, Danish explorer, born in Funen island in 1739; died in Copenhagen in 1794. He was a lieutenant in the navy when he was appointed in 1780 to the command of the Danish colonies in Africa. In 1784 he was sent on a voyage around the world, visiting the West Indies, Brazil, and the Spanish possessions on the Pacific coast, Manila, India, and returned to Copenhagen in June, 1787, with valuable charts and rich collections in natural history. After his promotion as post-captain he again explored the West Indies in 1788-'90, and in particular studied the condition of the negroes and the African slave-trade. He wrote "Reise omkring Verden" (3 vols., Copenhagen, 1787, illustrated) ; "Journal holden i skibet Christianstad paa reisen til Cuba, Puerto Rico og Vest Indien" (2vols., 1790); and presented to the Academy of sciences of Copenhagen a memoir on the condition of the negroes in the West Indies as compared with the life of the negroes on the west coast of Africa, which was published in Olaus Gyldendal's collection (Copenhagen, 1792), and translated into French under the title "Etat, condition, et usages des negres des Antilles, compare avee la condition des negres de la cote d'or" (Amsterdam, 1795).