commencement of the periscii, who extend thence to the pole. In regions where the sun remains above the horizon during an entire revolution of the earth, the shadow must evidently have turned in a complete circle round the gnomon. On this account he named them periscii. However they have nought to do with geography, inasmuch as the regions are not habitable on account of the cold, as we stated in our review of Pytheas. Nor is there any use in determining the size of this uninhabitable region, [it is enough to have established] that those countries, having the tropic for their arctic circle, are situated beneath the circle which is described by the pole of the zodiac[973] in the [diurnal] revolution of the earth, and that the distance between the equator and the tropic equals four-sixtieths of the great circle [of the earth]. _Note._ The pages of Casaubon’s edition of 1620 are given to facilitate reference to various editions and translations of Strabo. BOOK III. SPAIN. CHAPTER I. 1. Having thus given a general view of Geography, it will now be proper to describe each separate country in detail, as we engaged to do. We fancy that the method which we have adopted in the division of our subject, up to this point, has been correct; and we now recommence with Europe and the various countries into which it is divided, on the same principles as formerly, and induced by the same reasons. 2. The first division of this continent towards the west is Iberia, as we before stated. The greater part of this country is but little fitted for habitation; consisting chiefly of mountains, woods, and plains covered with a light meagre soil, the irrigation of which is likewise uncertain. The part next the north, which borders on the ocean, is extremely cold, and besides its rugged character, has no communication or intercourse with other [countries], and thus to dwell there is attended with peculiar hardship. Such is the character of this portion; on the other hand, almost the whole of the south is fertile, especially what is beyond the Pillars [of Hercules]. This however will be shown more in detail, but we must first describe the figure and extent [of the country].