Note 176 — Chapter III · GEOGRAPHICAL OUTLINE.

Aristotle accounts for what every traveller will have remarked, the extreme blueness of this sea, which he contrasts with the whitish waves of the Pontos Euxeinos. In the latter case, he observes, the air, thick and whitish, is reflected from the surface of the turbid waters; while, in the Ægæan, the sea, transparent to a great depth, reflects the bright rich colour of the sky.—Prob. xxiii. 6. He adds that the sea is more transparent during the prevalence of the north wind.