completes the conquest of Africa, i. 333.
Arrested at the head of his army, i. 369.

Museum of Alexandria, i. 187.
Its studies arranged in four faculties, i. 397.

Music, scale of, invented by Guido, i. 437.

Mycene, gate of, i. 32.

Mythology, Greek, origin of, i. 37.

Napier invents and perfects logarithms, ii. 285.

Narses, the eunuch, sent by Justinian against Rome, i. 351.

Nations, progress of, like that of individuals, i. 12.
Secular variations of, i. 16.
Death of, i. 17.
Are only transitional forms, i. 17.

Nearchus, an intimate friend of Alexander the Great, i. 173.

Nebulae, existence of, ii. 282.

Nebular hypothesis, ii. 281.

Necromancy, Alexandrian, i. 404.

Neo-Platonism, its origin imputed to Ammonius Saccas, i. 211.

Nervous system, general view of, ii. 346.

Three distinct parts of human, ii. 353.

Nestorians, their origin, i. 295.
Early cultivate medicine, i. 385.
Their history and progress, i. 391.

New academy founded by Carneades, i. 169.

Newspapers, their origin, ii. 204.
When first regularly issued in England, ii. 249.
Were first issued in Italy, ii. 390.

Newton, quotation from "Principia" of, i. 120.
Availed himself of the doctrines of Hipparchus, i. 202.
Under no obligation to Bacon, ii. 259.
Publication of the "Principia" of, ii. 272.
His mathematical learning and experimental skill, ii. 286.

Niagara Falls furnish proof of time from effect produced, ii. 305.
Prove the enormous age of the earth, ii. 334.

Nicaea, Council of, summoned by Constantine, i. 286.
Second council of, summoned by Irene, i. 420.

Nicene Creed, i. 287.

Nicholas V. a patron of art, ii. 110.

Nicomedia, church of, destroyed, i. 277.

Niebuhr, his opinion of the Greek account of the Persian war, i. 131.

Nile, inundations of, i. 86.

Nirwana, the end of successive existences in the Buddhist
doctrine, i. 71, 230.

Nitria, why well adapted for monks, i. 432.

Nogaret, William de, the legal adviser of Boniface, ii. 84.
Advises King Philip the Fair, ii. 91.

Nomades, Asiatic, i. 29.

Nominalism, doctrine of, sprang from scholastic philosophy, ii. 11.

Norman invasion of England favoured by Pope Gregory VII., ii. 16.

Norway, depth of rain in, i. 25.
Elevation and depression in level of, ii. 307.

Norwegians, diet of, accounted for, i. 27.