We shall then presume, that for upwards of two years the adventurers have been wholly dependent on wild animals, birds, and fish for their support. Here it becomes an essential element of consideration to form some approximate idea of the particular locality in which the missing expedition is probably frozen. Captain Penny tracked it up Wellington Strait and thence into Victoria Channel--a newly-discovered lake or sea of unknown extent, which reaches, for anything that can be demonstrated to the contrary, to the pole. It has long been noticed, that the mere latitude in the arctic regions is far from being a certain indication of the degree of cold which might naturally be expected from a nearer approach to the pole. For instance, cold is more intense in some parts of latitude 60 degrees than in 70 or 77 degrees; but this varies very much in different districts of the coast, and in different seasons; and we may remark in passing, that whenever there is a particularly mild winter in Britain, it is the reverse in the arctic regions; and so _vice versa_. The astonishment of Captain Penny on discovering the new polar sea in question was heightened by the fact, that it possessed a much warmer climate than more southern latitudes, and that it swarmed with fish, while its shores were enlivened with animals and flocks of birds. Moreover, _trees_ were actually floating about: how they got there, and whence they came, is a mysterious and deeply-interesting problem. Somewhere in this sea Sir John Franklin's ships are undoubtedly at this moment. We say the ships are; for we do not for one moment believe that they have been sunk or annihilated. It is not very likely that any icebergs of great magnitude would be tossing about this inland sea in the summer season--in winter its waters would be frozen--and in navigating it, the ships would, under their experienced and judicious commander, pursue their unknown way with extreme caution and prudence. It is more probable that they were at length fast frozen up in some inlet, or that small floating fields of ice have conglomerated around them, and bound them in icy fetters to the mainland. Or it may be that Franklin sailed slowly along this mystic polar sea, until he reached its extremity and could get no farther; and that extremity would actually seem to be towards the Siberian coasts. One thing is quite certain--namely, that so far as Captain Penny's people were able to penetrate the channel--several hundred miles--there was no indication whatever that up to that point Franklin had met with any serious calamity, or that he had suffered from a fatal deficiency of the necessaries of life.