We have confined ourselves, in this account of the ships of the ancients, principally to those particulars that are connected with the construction, equipment, &c. of those employed for commercial purposes, and shall now proceed to a historical sketch of the progress of discovery among the Greeks, from the earliest records to the era of Herodotus, the father of geographical knowledge. The first maritime expedition of the Greeks, of which we have a particular narration, and certainly one of the most celebrated in ancient times, is the Argonautic expedition. As we purpose to go into some length on the subject of this expedition, it may be proper to defend ourselves from the charge of occupying too much space, and giving too much attention to an enterprize generally deemed fabulous, and so obscured by fable and uncertainty, as to be little capable of illustration, and little conducive to the improvement of geographical knowledge. This defence we shall borrow from a name deservedly high among those who have successfully illustrated ancient geography, for the happy and successful mutual adaptation of great learning and sound judgment, and not less worthy of respect and imitation for his candour and liberality: we allude to Dr. Vincent, the illustrator of the Voyage of Nearchus, and the Periplus of the Erythræan Sea. "The reality of the Argonautic expedition, (he observes in the Preliminary Disquisition to the latter work), has been questioned; but if the primordial history of every nation but one is tinctured with the fabulous, and if from among the rest a choice is necessary to be made, it must be allowed that the traditions of Greece are less inconsistent than those of the more distant regions of the earth. Oriental learning is now employed in unravelling the mythology of India, and recommending it as containing the seeds of primæval history; but hitherto we have seen nothing that should induce us to relinquish the authority we have been used to respect, or to make us prefer the fables of the Hindoos or Guebres, to the fables of the Greeks. Whatever difficulties may occur in the return of the Argonauts, their voyage to Colchis is consistent: it contains more real geography than has yet been discovered in any record of the Bramins or the Zendevesta, and is truth itself, both geographical and historical, when compared with the portentous expedition of Rám to Ceylon." In discussing the subject of the Argonautic expedition, we shall successively consider its probable era--its supposed object--the voyage to Colchis, and the various tracks by which the Argonauts are said to have returned.