Thomsen
VILHELM LUDVIG PE- DER, a Danish philologist; born in Copenhagen , Denmark, Jan. 25, 1842. His principal principal works are: "The Magyar Lan- 1866); "Influence of the Germanic Languages on the Finno-Lappish" (1870); "Relations between Ancient Russia and Scandinavia" (1879); "Relations between the Finnish and the Baltic Languages" (1890).
THOMSENOLITE (after Dr. Julius Thomsen, of Copenhagen), a mineral resulting from the alteration of cryolite. Crystallization monoclinic, occurring in prisms with horizontal striæ, and also massive resembling chalcedony; hardness, 2.5-4; sp. gr. 2.74-2.76; luster, vitreous, ony; hardness, on some faces pearly; color, white; transparent to translucent. Composition: Fluorine 52.2; aluminum, 15.0; calcium, 15.4; sodium, 7.6; water, 9.8=100, which is equivalent to the hitherto accepted formula, 2(CaNa) F+A12F3+2HO; but Brandl has shown that the formula should be written [NaCa] F+Al₂F+ H2O.
THOMSON American bishop of the Protestant Epis-