e of Aiznadin, i. 335.
The effect on commerce of his long wars, i. 337.

Hercules, legend of, i. 37.

Heresy, Pelagian, i. 293.
Nestorian, i. 295.
Eutychian, i. 296.
Followed the spread of literature, ii. 60.

Heretics, burning of, by the Inquisition, ii. 75.

Hermits, their origin, i. 424.
Aerial, i. 426.
Grazing, i. 427.
Their numbers, i. 432.

Hero, the inventor of the first steam-engine, i. 205, 387.

Herodotus, i. 49.

Herschels, their discoveries, ii. 276.

Hesiod extends the theogony of Homer, i. 43.

Hessians, period of their conversion, i. 365.

Hiero's crown gives origin to hydrostatics, i. 195.

Hieroglyphics, their origin and value, i. 83.

Hilarion, a hermit of the fourth century, i. 425.
Said to be the first to establish a monastery, i. 432.

Hilary, Bishop of Arles, his contumacy denounced, i. 300.

Hildebrand brought on an ecclesiastical reform, ii. 3.
His difficulty in reconciling the dogmas of the Church with the
suggestions of reason, ii. 12.
Becomes Pope Gregory VII., ii. 15.

Hindu polytheism, i. 34.
Philosophy, i. 56.

Hipparchus, the writings of, i. 202.

Hippocrates, his opinion of Democritus, i. 126.
Review of, i. 393.

Historians, secession of, from the public faith, i. 49.

Hobbes, his philosophical opinions, i. 231.

Holy places, loss of, ii. 134.

Homer, theogony of, extended by Hesiod, i. 43.

Homoeomeriae, i. 109.

Honorius passes a law against concubinage among the clergy, i. 359.

Honorius III. compels Frederick II. to marry Yolinda de
Lusignan, ii. 67.

Hooke, his paper to the Royal Society on circular motion, ii. 272.
Determines the essential conditions of combustion, ii. 286.

Hormisdas, Pope, policy pursued by, i. 353.

Horner's observation on the rate of the mud deposit of the Nile, i. 87.

Hosius of Cordova sent to Alexandria, i. 286.

Houris of Paradise, i. 346.

Humboldt pays tribute to Eratosthenes, i. 196.
His remarks on the movement of Jupiter's satellites, ii. 267.

Hume, his doctrine of mind and matter, i. 231.

Huss, John, martyrdom of, ii. 100.
Adopts the theological views of Wickliffe, ii. 148.

Hydrometer improved by Alhazen, ii. 48.

Hyksos, old empire of Egypt invaded and overthrown by the, i. 76.

Hypatia lectures on philosophy in Alexandria, i. 322.
Murdered by Cyril, i. 32