Note 626 — Chapter II
W. (William) Falconer translation
According to Plutarch, both Thales and Pythagoras had divided the earth into five zones. Since Parmenides lived one hundred and fifty years after the first of these philosophers, he cannot be considered the author of this division. As Posidonius and Strabo estimated the breadth of the torrid zone at 8800 stadia, and Parmenides is said to have nearly doubled it, this would give 17,600 stadia, or 25° 8′ 34″, taking this at 25° it would appear that Parmenides extended the torrid zone one degree beyond the tropics.