We are not assisted in finding out the truth, if, instead of founding our calculations and conjectures on the distance sailed in the six days, we take for their basis the distance which Pytheas states Thule to be from the equator. This distance, we have already mentioned, was 46,300 stadia; which, according as the different kinds of stadia are calculated upon, will give respectively the latitude of the south of Greenland, of the north of Iceland, or of the west coast of Jutland; or, in other words, the limit of Pytheas' voyage will be determined to be in the same latitude, whether we ascertain it by the average length of the day and night's sail of the vessels of the ancients, or by the distance from the equator which he assigns to Thule. It may be proper to state, that there is a district on the coast of Norway, between the latitudes of 60° and 62°, called Thele, or Thelemarle. Ptolemy supposes this to have been the Thule of Pytheas, Pliny places it within three degrees of the pole, Eratosthenes under the polar circle. The Thule discovered by Agricola, and described by Tacitus, is evidently either the Orkney or the Shetland Islands. It may appear presumptuous as well as useless, after this display of the difficulties attending the question, to offer any new conjecture; and many of our renders may deem it a point of very minor importance, and already discussed at too great length. It is obvious, from the detail into which we have entered, that no country exists in the latitude which must be assigned to it, whether we fix that latitude by Pytheas' statement of the distance of Thule from the equator, or by the space sailed over in six days, the productions of which at all agree with those mentioned by Pytheas. On the other hand, we cannot suppose that his course was south-west, and not at all to the north, which must have been the case, if the country at which he arrived in sailing from the northern extremity of Britain, was Jutland. The object must, therefore, be to find out a country the productions of which correspond with those mentioned by Pytheas; for, with regard to those, he could not be mistaken: and a country certainly not the least to the south of the northern part of Britain. As it is impossible that he could have reached the pole, what he states respecting the day and night being each six months long must be rejected; and his other account of the length of the day, deduced from his own observation of the sun, at the time of the summer solstice, touching the northern point of the horizon, must be received. If we suppose that this was the limit of the sun's course in that direction (which, from his statement, must be inferred), this will give us a length of day of about twenty hours, corresponding to about sixty-two degrees of north latitude. The next point to be ascertained is the latitude of his departure from the coast of Britain. There seems no good reason to believe, what all the hypothesis we have examined assume, that Pytheas