Ptolemy indicates the existence of “Pillars,” which he calls “the Pillars of Alexander,” above Albania and Iberia, at the commencement of the Asiatic Sarmatia. But as it is known that Alexander never penetrated into these regions, it is clear that the title “of Alexander” was added by the Greeks to the names of mountains, which separated a country partly civilized from that entirely occupied by hordes of savages. Everything therefore seems to show, that these Pillars near Iberia in Asia, and not the Pillars of Hercules in Europe, formed the boundary of the expeditions of Sesostris, Tearcho, and Nabuchodonosor.—Gossellin.
Roused the sacred fire, as the law bids, Touching the god with consecrated wand. AthenÆus xii. 40, p. 850. Bohn’s Classical Library. Procopius, a learned writer, estimates a day’s march at 210 stadia; and employment of this value, in the whole course of his history, proves that it was generally adopted. Now, if we multiply 60 by 210, we shall have 12,600 stadia, and dividing 12,900 by 60, we have 215 stadia, or nearly the amount of a day’s march according to Procopius. I am therefore of opinion that Eratosthenes did nothing more than multiply 210 or 215 by the number of 60 days, furnished by Timosthenes; and as the excessive length of 12,900 stadia could not agree with the 5000 stadia, which he had calculated in a straight line for the same interval, he imagined this great difference arose from the excessive winding course of the Nile; consequently he supposed the Nile to change frequently the direction of its course. This opinion had its influence in the construction of Ptolemy’s map, which presents to us nearly all the inflexions which Eratosthenes imagined; in calculating the intervals of positions assigned by Ptolemy along the river, we find a total of 1260 minutes; and adding about 1/6 for the small windings, we have a total of 1470 minutes, which are equal to 12,400 stadia of the module (700 to the degree) adopted by that geographer. According to this hypothesis, the distance in Strabo will be thus divided: Setting out from MeroË, the Nile runs,
which nearly corresponds with the account of Timosthenes. The number of days corresponds tolerably well with the distance given by the explorers sent by Nero for the discovery of MeroË: they reported the distance to be 873 miles. If we divide this number by 60, we shall have for the day’s mean march 14·55 Roman miles, or 11·64 geographical miles, which is in fact the day’s mean march, according to Major Rennell. Letronne. In carefully measuring, upon a large map of Egypt in 47 sheets, the course of the Nile through all its windings, and with the compass opened to 1000 metres, I find—
This measure reduced to mean degrees of the earth equals 637° 25´, and represents 5312 stadia of 500 (to the degree). I certainly did not expect to find such an agreement between the new and the ancient measures. The periodic rising of the Nile, I think, must have produced, since the time of Eratosthenes, some partial changes in the windings of the river; but we must acknowledge that these changes, for greater or for less, compensate one another on the whole. We observe, moreover, as I have already often observed, that the use of the stadium of 500 to the degree is anterior to the Alexandrine school; for at the time of Eratosthenes the stadium of 700 was more particularly made use of in Egypt. Gossellin.
Hac sÆvit rabie imbelle et inutile vulgus Parvula fictilibus solitum dare vela phaselis, Et brevibus pictÆ remis incumbere testÆ. Juv. xv. 126.
The base and height being given, we find for the solid contents—
So that if a wall of (three metres) about 9-1/4 feet in height, and a foot in thickness, were built with the materials of these pyramids, we should have a wall—
The stones, therefore, of the three pyramids would form such a wall 2910 miles in length, or one sufficient to reach from Alexandreia to the coast of Guinea. Letronne. |