n the low Arab class, i. 339.
Moral state of Europe indicated by the usages of war, ii. 232.

War system, Roman, i. 250.

Water, importance of, in Egypt, i. 96.
The curious treatise of Zosimus on the virtues and composition
of, i. 408.

Physical and chemical relation of, ii. 372.

Watt, James, has revolutionized the industry of the world, i. 387.
His discovery of the constitution of water, ii. 340.
His invention of the steam-engine, ii. 385.

Week, origin of the, i. 403.

Weeping statues, held in superstitious veneration by the vulgar, i. 51.

Western Empire becomes extinct, i. 351.

Westphalia, Peace of, the culmination of the Reformation, ii. 212.

Whewell, his testimony to the incomparable merit of Newton's
"Principia," ii. 275.

Wickliffe translates the Bible, ii. 99. The revolt of, ii. 148.

William of Champeaux opens a school of logic in Paris, ii. 14.

William, Lord of Montpellier, his edict respecting the practice
of medicine, ii. 123.

William de Nogaret assists King Philip against Pope Boniface
II., ii. 84.
Also against the Templars, ii. 91.

William de Plaisian prefers a long list of charges against Pope
Boniface, ii. 84.

Willis, his researches on the brain and nervous system, ii. 286.

Winking pictures held in superstitious veneration by the vulgar, i. 51

Witchcraft, introduction of European, ii. 115.

Women, condition of, in India, i. 63.
"Sub-introduced," i. 359.
Exerted extraordinary influence in the conversion of Europe, i. 365.

Woodward improves mineralogy, ii. 286.

World, to determine the origin and manner of production of, the
first object of Greek philosophy, i. 217.
Hindu doctrine of the absorption of, i. 226.
Moral, is governed by principles analogous to those which
obtain in the physical, i. 348.
Expected end of, i. 377.
Anthropocentric ideas of the beginning of, ii. 297.

Worlds, infinity of; ii. 292. Succession of, ii. 336.

Worms, synod of, ii. 18.

Xantippe, the wife of Socrates, her character unfairly judged
of, i. 147.

Xenophanes, the representative of a great philosophical advance, i. 118.

Xerxes, his exploits exaggerated, i. 130.

Ximenes, Cardinal, burns Arabic manuscripts, ii. 177.

Year, length of, determined by Albategnius and Thebit Ben
Corrah, ii. 41.

Yezed, Khalif, origin of I