book xi. chap. xi. § 5, he compares the parasang with the stadium, and states that some writers reckoned it at 60, others at 40, and others at 30 stadia.
Dr. Smith, in his Dictionary of Greek and Roman Antiquities, says, “We think that Ukert has satisfactorily shown an accurate description of a place should be particular to add its astronomical and geometrical relations, explaining carefully its extent, distance, degrees of latitude, and temperature of atmosphere. He says likewise, as the size of the earth has been demonstrated by other writers, we shall take for granted that the Greeks had not different standards of length, but always used the Olympic stadium and the foot corresponding to it. He states that the stadium was equal to 600 Greek, or 625 Roman feet, or to 125 Roman paces, and the Roman mile contained 8 stadia. Hence the stadium contained 606 feet 9 inches, English. This standard prevailed throughout Greece under the name of the Olympic stadium, because it was the exact length of the stadium or foot-race course at Olympia, measured between the pillars at the two extremities of the course.” Still Dr. Smith further observes, “But although the stadium and the foot connected with it were single definite measures throughout Greece, yet we find in the eastern countries, Babylon, Syria, and Egypt, and in some neighbouring Greek states, feet longer than the Olympic, the origin of which is to be explained by the coëxistence, in the Babylonian system, of a royal or sacred and a common foot and cubit, which were so related to one another, that the royal cubit was three finger-breadths longer than the common.”
We may conclude that Strabo’s stadium varied considerably, as he sometimes received his distance from personal observation or credible report, and often quoted other writers, and reduced other standards, as the mile, the parasang, and the schœnus, to the stadium. In addition to this, the most ancient mode of reckoning distances was by the number of days required to perform the journey, and this was transferred into stadia by reckoning a certain number of stadia to a day’s journey.[14]
Siebenkees and Heeren (De Fontibus Geographicorum Strabonis) have examined the authorities to which Strabo had, or might have had, access, and Groskurd has availed himself of their researches.
The following is a short summary of the seventeen books from these sources, but for a more detailed account of their contents the translation itself must be referred to.
The first two books may be considered as an independent treatise, and by themselves form a remarkable contrast with the rest of the work, in the manner of treating the subjects, and in the difficulties which they present both of language and matter.
In the 1st book, the author enters into a long discussion on the merits of Homer, whom he considers to have been the earliest geographer, and defends him against the errors and misconceptions of Eratosthenes. He corrects some faults of Eratosthenes, and, in his inquiry concerning the natural changes of the earth’s surface defends Eratosthenes against Hipparchus. In conclusion, he again corrects Eratosthenes as regards the magnitude and divisions of the inhabited world. The most remarkable passage in this book is that in which he conjectures the existence of the great Western Continents.[15]
The 2nd book is chiefly occupied with some accounts of mathematical geography, and the Author defends against Hipparchus the division of the inhabited world adopted by Eratosthenes into sections. Then follows a criticism of the division of the earth into six zones, as taught by Poseidonius and Polybius. The pretended circumnavigation of Africa by Eudoxus is referred to, as well as some geographical errors of Polybius. He makes observations of his own on the form and size of the earth in general, as well as of the inhabited portion of it, describing the method of representing it on a spherical or plane surface. A short outline is given of seas, countries, and nations; and he concludes with remarks on the system of climates,[16] and on the shadows projected by the sun.