23.
Greatest elevation of, above the sea, i. 23.
Vertical displacement of, i. 29.
Conversion of, i. 365.
Psychical change in, i. 364.
Social condition of, after Charlemagne, i. 376.
Barbarism of, ii. 27.
Future of, ii. 392.

European climate, modification of Asiatic intruders by, i. 34.
Old religion, i. 240.
Priesthood, i. 240.
Slave-trade, i. 373.

Eusebius, his contempt of philosophy, i. 314.
Perverts chronology, i. 197.
Is deposed, i. 297.
His apology for the Fathers, i. 314.
His chronology subverts that of Manetho and Eratosthenes, i. 316.
His admission of his own want of truthfulness, i. 360.

Eustachius distinguished by his dissections, ii. 284.

Eutychianism, i. 296.

"Everlasting Gospel," ii. 75.

Existence depends on physical conditions, i. 7.

Extinction of species, cause of, i. 8.

Extinctions and creations, law of, ii. 311.

Eye, arranged on refined principles of optics, i. 5.
Functions of, ii. 380.
Capabilities of the human, ii. 383.

Fabricius ab Aquapendente discovers the valves in the veins, ii. 285.

Fairies destroyed by tobacco, ii. 126.

Faith, two kinds of, ii. 192.

Fallopius distinguished by his dissections, ii. 284.

Fasting, continued, its effect on the mind, i. 429.

Faustus, his accusation to Augustine, i. 310.

Felix V., Pope, abdicates, ii. 103.

Felix, Bishop of Rome, excommunicated by Acacius, Bishop of
Constantinople, i. 352.

Fernel establishes the true nature of syphilis, ii. 232.
Measures the size of the earth, ii. 255.

Fetiches supposed a panacea, i. 386.

Fetichism displaced by star worship, i. 3.
Difficulty of early cultivators of philosophy to emerge from, i. 100.

Feudal system, how it originated, i. 376.

Fire, asserted by Heraclitus to be the first principle, i. 104.

Fire, liquid or Greek, used by the Arabs, i. 408.

Fireworks used by the Arabs, i. 408.

Flagellants, their origin, ii. 76.

Flavianus, Bishop of Constantinople, deposed, i. 297.

Florence, the Academy of Athens revived in the Medicean gardens
of, ii. 193.

Florentine Academicians erroneously suppose water to be
incompressible, ii. 372.
Originate correct notions of the radiation of heat, ii. 383.
Show that dark heat may be reflected by mirrors, ii. 390.

Florentius, a priest, attempts to poison St. Benedict, i.