In fact, the work which we possess under the name of Scylax, is evidently a collection of the itineraries of ancient navigators: it may have been drawn up by the Scylax whom Darius employed, though, if that were the case, it is very extraordinary he should not have included the journal of his own voyage; or his name, as that of a celebrated geographer may have been put to it; or there may have been another geographer of that name. The collection is evidently imperfect; what is extant contains the coasts of the Palus Maeotis, the Euxine, the Archipelago, the Adriatic, and all the Mediterranean, with the west coast of Africa, as far as the isle of Cerne, which he asserts to be the limit of the Carthaginian navigation and commerce in that direction. The sea, according to him, is not navigable further to the south than this island, on account of the thick weeds with which it was covered. The mention of this impediment is adduced by D'Anville to prove the reality of the Carthaginian voyages to the south: it is not, indeed, true, that the sea is impassable on account of these weeds to modern navigators, but it is easy to conceive that the timidity and inexperience of the ancients, as well as the imperfect construction of their vessels, would prevent them from proceeding further south, when they met with such a singular obstacle. If a ship has not much way through the water, these weeds will impede her course. It has been very justly remarked, that if the latitude where these weeds commence was accurately determined, it would fix exactly the extent of the voyages of the Carthaginians in this direction. The weed alluded to is probably the fucus natans, or gulf-weed.
Hitherto the knowledge that the ancients possessed of the habitable world, had not been collected by any writer, and is to be gathered entirely from short, vague, and evidently imperfect narrations, scattered throughout a great number of authors. Herodotus has been celebrated as the father of history; he may with equal justice be styled the father of geographical knowledge: he flourished about 474 years before Christ. In dwelling upon the advances to geographical knowledge which have been derived from him, it will be proper and satisfactory, before we explain the extent and nature of them, to give an account of the sources from which he derived his information; those were his own travels, and the narrations or journals of other travellers. A great portion of the vigour of his life seems to have been spent in travelling; the oppressive tyranny of Lygdamis over Halicarnassus, his native country, first induced or compelled him to travel; whether he had not also imbibed a portion of the commercial activity and enterprize which distinguished his countrymen, is not known, but is highly probable. We are not informed whether his fortune were such as to enable him, without entering into commercial speculations, to support the expences of his travels; it is evident, however, from the extent of his travels, as well as from the various, accurate, and, in many cases, most important information, which he acquired, that these expences must have been very considerable. From his work it is certain that he was endowed with that faculty of eliciting the truth from fabulous, imperfect, or contradictory evidence, at all times so necessary to a traveller, and indispensably so at the period when he travelled, and in most of the countries where his enquiries and his researches were carried on. His great and characteristic merit consists in freeing his mind from the opinions which must have previously occupied it;--in trusting entirely either to what e himself saw, or to what he learned from the best authority;--always, however, bringing the information acquired in this latter mode to the test of his own observation and good sense. It is from the united action and guidance of these two qualifications--individual observation and experience gained by most patient and diligent research and enquiry on the spot, and a high degree of perspicacity, strength of intellect, and good sense, separating the truth from the fable of all he learnt from the observation and experience of others, that Herodotus has justly acquired so high degree of reputation, and that in almost every instance modern travellers find themselves anticipated by him, even on points in which such a coincidence was the least likely.
His travels embraced a variety of countries. The Greek colonies in the Black Sea were visited by him: he measured the extent of that sea, from the Bosphorus to the mouth of the river Phasis, at the eastern extremity. All that track of country which lies between the Borysthenes and the Hypanis, and the shores of the Palus Maeotis, he diligently explored. With respect to the Caspian, his information affords a striking proof of his accuracy, even when gained, as it was in this instance, from the accounts of others. He describes it expressly as a sea by itself, unconnected with any other: its length, he adds, is as much as a vessel with oars can navigate in fifteen days: its greatest breadth as much as such a vessel can navigate in eight days. It may be added, as a curious proof and illustration of the decline of geographical knowledge, or, at least, of the want of confidence placed in the authority of Herodotus by subsequent ancient geographers, that Strabo, Pomponius Mela, and Pliny, represent the Caspian Sea as a bay, communicating with the great Northern Ocean; and that even Arrian, who, in respect to care and accuracy, bears no slight resemblance to Herodotus, and for some time resided as governor of Cappadocia, asserts that there was a communication between the Caspian Sea and the Eastern Ocean.
But to return from this digression to the geographical knowledge of Herodotus, as derived from his own travels, he visited Babylon and Susa, and while there, or perhaps in excursions from those places, made himself well acquainted with the Persian empire. The whole of Egypt was most diligently and thoroughly explored by him, as well as the Grecian colonies planted at Cyrene, in Lybia. He traced the course of the river Ister, from its mouth nearly as far as its source. The extent of his travels in Greece is not accurately known; but his description of the Straits of Thermopylae is evidently the result of his own observation. All these countries, together with a portion of the south of Italy, were visited by him. The information which his history conveys respecting other parts of the world was derived from others: in most cases, it would seem, from personal enquiries and conversation with them, so that he had an opportunity of rendering the information thus acquired much more complete, as well as satisfactory, than it would have been if it had been derived from their journals.
Herodotus trusted principally or entirely to the information he received, with respect to the interior of Africa and the north of Europe, and Asia to the east of Persia. While he was in Egypt he seems to have been particularly inquisitive and interested respecting the caravans which travelled into the interior of Africa; and regarding their equipment, route, destination, and object, he has collected a deal of curious and instructive information. On the authority of Etearchus, king of the Ammonians, he relates a journey into the interior of Africa, undertaken by five inhabitants of the country near the Gulf of Libya; and, in this journey, there is good reason to believe that the river Niger is accurately described, at least as far as regards the direction of its course.
It is evident from the introduction to his third book that the Greek merchants of his time were eminently distinguished for their courage, industry, and abilities; that in pursuit of commercial advantages they visited very remote and barbarous countries in the north-eastern parts of Europe, and the adjacent parts of Asia; and that the Scythians permitted the Greek merchants of the Euxine to penetrate farther to the east and north "than we can trace their progress by the light of modern information." To them Herodotus was much indebted for the geographical knowledge which he displays of those parts of the world; and it is by no means improbable that the spirit of commercial enterprize which invited the Greek merchants on the Euxine to penetrate among the barbarous nations of the north-east, also led them far to the east and south-east; and that from them, as well as from his personal enquiries, while at Babylon and Susa, Herodotus derived much of the information with which he has favoured us respecting the country on the Indus, and the borders of Cashmere and Arabia. Having thus pointed out the sources from which Herodotus derived his geographical knowledge, we shall now sketch the limits of that knowledge, as well as mention in what respects he yielded to the fabulous and absurd notions of his contemporaries.
He fails most in endeavouring to give a general and combined idea of the earth; even where his separate sketches are clear and accurate, when united they lose both their accuracy and clearness. He seems to doubt whether he should divide the world into three parts; and at last, having admitted such a division, he makes the rivers Phasis and Araxes, and the Caspian Sea, the boundaries between Europe and Asia; and to Europe he assigns an extent greater than Asia and Libya taken together. His knowledge of the west of Europe was very imperfect: in some part he fixes the Cassiterides, from which the Phoenicians derived their tin. The Phoenician colony of Gadez was known to him. His geography extended to the greater part of Poland and European Russia. Such appear to have been its limits with respect to Europe; and such the general notion he entertained of this quarter of the world. As to Asia, he believed that a fleet sent by Darius had circumnavigated it from the Indus to the confines of Egypt; but though his general idea of it was thus erroneous, he possessed accurate information respecting it from the confines of Europe to the Indus. Of the countries to the east of that river, as well as of the whole of the north and southern parts of it, he was completely ignorant. He particularly notices that the Eastern Ethiopians, or Indians, differ from those of Africa by their long hair, as opposed to the woolly head of the African. In his account of India he interweaves much that is fabulous; but in the same manner as modern discoveries in geography have confirmed many things in Herodotus which were deemed errors in his geography, so it has been ascertained that even his fables have, in most instances, a foundation in fact. With regard to Africa, his knowledge of Egypt, and of the country to the north of it, seems to have been very accurate, and more minute and satisfactory than his knowledge of any other part of the world. It is highly probable that he was acquainted with the course of the western branch of the Nile, as far as the 11th degree of latitude. He certainly knew the real course of the Niger. On the east coast of Africa he was well acquainted with the shores of the Arabian Gulph; but though he sometimes mentions Carthage, and describes the traffic carried on, without the intervention of language, between the Carthaginians and a nation beyond the Pillars of Hercules, which we nave already mentioned in treating of the commerce of the Carthaginians, yet he seems to have been unacquainted with any point between Carthage and the Pillars of Hercules.
In the history of Herodotus, there is an account of a map constructed by Aristagoras, tyrant of Miletus, when he proposed to Cleomenes, king of Sparta, to attack Darius, king of Persia, at Susa; from this account, the vague, imperfect, and erroneous ideas entertained in his time of the relative situations and distances of places, as well as of the extremely rude and feeble advances which had been made towards the construction of maps, may be inferred. Major Rennell, in his Illustrations of Herodotus, has endeavoured to ascertain from his history the parallel and meridian of Halicarnassus, the birth-place of the historian. According to him, they intersect at right angles over that town, cutting the 37th degree of north latitude, and the 45-1/2 of east longitude, from the Fortunate Islands.
For a considerable period after the time of Herodotus, the ancients seem to have been nearly stationary in their knowledge of the world. About 368 years before Christ, Eudoxus, of Cnidus, whose desire of studying astronomy induced him to visit Egypt, Asia, and Italy, who first attempted to explain the planetary motions, and who is said to have discovered the inclination of the moon's orbit, and the retrograde motion of her nodes, is celebrated as having first applied geographical observations to astronomy; but he does not appear to have directed his researches or his conjectures towards the figure or the circumference of the earth, or the distances or relative situations of any places on its surface.
Nearly about the same period that Eudoxus died Aristotle flourished. This great philosopher, collecting and combining into one system of geographical knowledge the discoveries and observations of all who had preceded him, stamped on them a dignity and value they had not before possessed, as well as rendered them less liable to be forgotten or misapplied: he inferred the sphericity of the earth from the observations of travellers, that the stars seen in Greece were not visible in Cyprus or Egypt; and thus established the fundamental principle of all geography. But though this science, in its most important branch, derived much benefit from his powerful mind, yet it was not advanced in its details. He supposed the coasts of Spain not very distant from those of India; and he even embraced a modified notion of Homer's Ocean River, which had been ridiculed and rejected by Herodotus; for he describes the habitable earth as a great oval island, surrounded by the ocean, terminated on the west by the river Tartessius, (supposed to be the Guadelquiver,) on the east by the Indus, and on the north by Albion and Ierne, of which islands his ideas were necessarily very vague and imperfect. In some other respects, however, his knowledge was more accurate: he coincides with Herodotus in his description of the Caspian Sea, and expressly states that it ought to be called a great lake, not a sea. A short period before Aristotle flourished, that branch of geography which relates to the temperature of different climates, and other circumstances affecting health, was investigated with considerable diligence, ingenuity, and success, by the celebrated physician Hippocrates. In the course of his journeys, with this object in view, he seems to have followed the plan and the route of Herodotus, and sometimes to have even penetrated farther than he did.