Doth a fountain send forth at the same place
"Or hole"; for at divers places, and at different times, as Pliny F13 observes, it may send forth
sweet [water] and bitter:
and it is reported F14, there is a lake with the Trogloditae, a people in Ethiopia, which becomes thrice a day bitter, and then as often sweet; but then it does not yield sweet water and bitter at the same time: this simile is used to show how unnatural it is that blessing and cursing should proceed out of the same mouth.
F13 Nat. Hist. l. 2. c. 103.
F14 Isodor. Hispal. Originum, l. 13. c. 13. p. 115.