very successful both in medicine and literature, but
"tormented with hypochondria," and wrote his book on "Solitude," which
was translated into every European language; wrote also on "Medical
Experiences," a famed book in its day too, also on "National Pride," and
became "famed throughout the universe"; attended Frederick the Great on
his deathbed, and wrote an unwise book about him, "a poor puddle of
calumnies and credulities" (1728-1795). For insight into the man and his
ways see CARLYLE'S "FREDERICK," a curious record.

ZINDIKITES, a Mohammedan heretical sect, who disbelieve in Allah,
and deny the resurrection and a future life.

ZINZENDORF, a German count, born in Dresden; studied at Wittenberg,
came under the influence of the Pietist Spener, gave himself up to
evangelical labours, and established a religious community on his estate
at Herrnhut, in Saxony, consisting chiefly of a body of Moravian
Brethren, who had been driven out of Bohemia and Moravia on account of
their religious opinions, and were called Herrnhuters, of which he became
one of the leaders and chief apostles, labouring far and wide in the
propagation of their doctrines and suffering no small persecution by the
way; he was an earnest man, the author of religious writings,
controversial and devotional; wrote a number of hymns, and died at
Herrnhut, from which he was driven forth, but to which he was allowed to
return before the end (1700-1760).

ZION, that one of the four hills on which Jerusalem is built, on the
SW. of the city, and the site of the palace of King David and his
successors.

ZIONISM, the name given a movement on the part of the Jews to
re-establish themselves in Palestine as a nation.

ZIRCONIA LIGHT, an intensely brilliant light, similar to the
Drummond light, but differing from it chiefly in the employment of cones
of zirconium instead of cylinders of lime; it has been superseded by the
electric light.

ZIRCONIUM, a metallic element often found in connection with silica,
commonly in the form of a black powder.

ZIRKNITZ, LAKE, a high-lying lake in Carniola, 20 m. SW. of Laybach,
the waters of which in the dry season will sometimes disappear altogether
through the fissures, and in rainy will sometimes expand into a lake 5 m.
long and 3 m. broad.

ZISKA, JOHANN, Hussite leader, born in Bohemia of a noble family;
began life as a page at the court of King Wenceslas, but threw up a
courtier's life in disgust for