a Lutheran theologian of Denmark, was born in 1809. He studied at Copenhagen, and commenced his academical career there in 1840. For more than forty years he labored as university teacher, and died September 30, 1884. Nielsen was a follower of Kierkegaard, and an opponent of Martensen's speculative system of theology. Of his works which have been translated into German, we mention Der Brief Pauli zan die Romer (Leipsic, 1843): — Vorlesungen uber philosophische Propddeutik: — Die Logik der Grundideen: — Religionsphilosophie and Allgemeine Wissenschaftslehre in ihren Grundziigen (1880). (B.P.)