Galilée; cf. page 14, note

4. Robert Hooke (163 5- 1702), an English philosopher, born at Freshwater in the Isle of Wight; noted for his inventive faculty ; claimed several inventions and improvements.

Page 79. — 1. comme un, a kind of.

2. Newton (Sir Isaac, 1 642-1 727), the illustrious English philosopher, mathematician and astronomer, among whose many discoveries the most important is the law of universal gravitation.

3. achromatiques, achromatic, derived from the Greek and meaning " without color," " not showing color."

4. Dollond (John, 1706-1761). At first a silk-weaver and devoting his leisure moments to scientific study, he became later an optician and constructed télescopes of superior quality. He invented the achromatic télescope, for which he received the Copley medal of the Royal Society in 1758.

Page 81. — 1. un motif de plus, an additional motive. 2. proprement dites, properly so called.

Page 82. — 1. machines à diviser, graduators. 2. fait suite à, is in Une with.

Page 83. — I. Ninive, Ninivek, the greatest city of ancient Assyria and for some time the capital of that country, situated on the east bank of the Tigris river. It had become important as early as the nineteenth century b.c. Modem excavations hâve brought to light ruins of various temples and palaces, and of the city walls.

2. Babylone, Babylon, a very celebrated city of ancient Chaldaea, situated on the river Euphrates, about sixty miles south of Bagdad. As capital of the Babylonian kingdom it appears to hâve reached the summit of its prosperity and splendor in the reign of Nebuchadnezzar (about 604 to 561 B. c). Numerous ruins testify to its former grandeur.

Page 84. — 1. Saint-Etienne, manufacturing town in southeastern France in the department of Loire.

2. Lyell (Sir Charles, 1797-1875), born in Scotland and educated at Oxford. In 1832 he was appointed professor of geology at King's Collège, London. His représentative work was Principles of Geology (3 vols., 1830-33), which became at once a standard authority. He made two visits to the United States, lectured at Boston, traveled extensively through the States, and published works embodying the results of his American observations.

3. Staffordshire, a west midland county of England which has furnished very rich coal-fields.