CHAP. 12.—WATERS WHICH SHARPEN OR DULL THE SENSES. WATERS WHICH IMPROVE THE VOICE.
Near the town of Cescum, in Cilicia, runs the river Nus,[2969] the waters of which, according to Varro, sharpen the intellect; while those of a certain spring in the island of Cea dull the senses. At Zama, in Africa, there is a spring, the waters of which render the voice more musical.[2970]