for then it is drawn equally with all the other waters, but in winter it bears the burden alone. Thus I suppose the Sun to be the cause of these things. 26. He is also the cause in my opinion that the air in these parts is dry, since he makes it so by scorching up his path through the heaven: 268 thus summer prevails always in the upper parts of Libya. If however the station of the seasons had been changed, and where now in the heaven are placed the North Wind and winter, there was the station of the South Wind and of the midday, and where now is placed the South Wind, there was the North, if this had been so, the Sun being driven from the midst of the heaven by the winter and the North Wind would go to the upper parts of Europe, just as now he comes to the upper parts of Libya, and passing in his course throughout the whole of Europe I suppose that he would do to the Ister that which he now works upon the Nile. 27.