Page:History of the Literature of the Scandinavian North.djvu/307

Rh for testing the results of philosophical deductions. His chief works are "Grundideernes Logik" (of which two volumes have been published) and "Natur og Aand," in which he develops his views of philosophy and nature. He has also written a great number of books and dissertations, partly purely scientific and partly popular in form. In all his writings as also in his professional lectures he is exceedingly eloquent.

A decided opponent of Nielsen's conception of the religious principle was (1820-76), professor of philosophy in the University of Copenhagen. Still he did not take the side of the theologians, but he may rather he said to have exercised a subtle negative criticism not upon theological views of Christianity, but also upon Christianity itself. He has made very valuable contributions to the history of philosophy, among which are his "Benedikt Spinoza," "Philosophiens historiske Udvikling," and "Philosophiens Historie i Grundrids."

In the domain of we must, above all, mention  (1771-1851) the discoverer of electro-magnetism and the author of many valuable works on physics. His views concerning the philosophy of nature he has developed in a brilliant and attractive work, "Aanden i Naturen" (The soul in Nature). The following are also to be mentioned: the botanist, (1789-1852); the geologist and chemist,  (1794-1864), and the zoölogist,  (born 1813), who also has distinguished himself in archæology to which he has been led by his palæontological studies.