46.
Rise of, ii. 190.
Effect of, on literature and religion, ii. 224.

Cross, the true, discovered, i. 309.

Crotona, a Greek colonial city, i. 111.
Its extent, i. 128.

Crusades, origin of, ii. 20.
The first, ii. 22.
Political result of, ii. 23.
Atrocities in the South of France, ii. 62.
Effect of, ii. 135.

Ctesiphon, the metropolis of Persia, sack of, i. 335.

Cuvier, his doctrine of the permanence of species, ii. 326.
His remark on vivisection, ii. 349.

Cuzco, the metropolis of Peru, description of, ii. 181.

Cycle of life, i. 233.

Cyclopean structures, i. 32.

Cynical school, i. 149.

Cyprian, his complaints against the clergy and confessors, i. 358.

Cyprian, St., his remarks at the Council of Carthage, i. 291.

Cyprus taken by the Saracens, i. 335.

Cyrenaic school, i. 149.

Cyril, St., his acts, i. 321.
An ecclesiastical demagogue, i. 391.

Daille, his estimate of the Fathers, ii. 225.

Damascus taken, i. 334.

Damasus, riots at the election of, i. 292.

Damiani, Peter, his charges against the priests of Milan, ii. 7.

Death, interstitial, i. 14.

"Defender of Peace," nature of the work, ii. 93.

Deification, John Erigena on, ii. 9.

Deity, anthropomorphic ideas of, in the Koran, i. 342.

Delos, a slave market, i. 246.

Deluges, ancient, i. 30.

Delusions, of the sense, i. 230.
Created by the mind, i. 429.

Demetrius Phalereus, his instructions to collect books, i. 188.

Demetrius Poliorcetes quoted, i. 166.

Democritus asserts the unreliability of knowledge, i. 124.

Descartes, his theory of clear ideas, i. 231.
Introduces the theory of an ether and vortices, ii. 285.

Desert, influences of the, i. 6.

Destiny, Democritus's opinion of, i. 125.
Stoical doctrine of, i. 185.

Deucalion, deluge of, i. 51.

Development of organisms, Alhazen's theory of, ii. 48.

Dew, the nature of, ii. 384.

Diaphragm of Dicaearchus, i. 196.

Didymus, wonderful taciturnity related of, i. 427.

Diocles, a writer on hygiene and gymnastics, i. 397.

Diocletian, state of things under, i. 276.

Diogenes of Apollonia developes the doctrines of Anaximenes, i. 99.

Diogenes of Sinope extends the doctrines of Cynicism, i. 149.

Dioscorus, Bishop of Alexandria, deposed by the Council of
Chalcedon, i. 297.

Djafar, or Geber, an Arabian chemist,