The realm of the Unknown has now, by exploration of our planet and by science, been pretty well pressed into annexation with the Unknowable. In early periods, however, unexplored lands and seas existed only in the human imagination, and men appear to have included them within the laws of analogy as slowly as their descendants so included the planets. The monstrous forms with which superstition now peoples regions of space that cannot be visited could then dwell securely in parts of the world where their existence or non-existence could not be verified. Science had not yet shown the simplicity and unity underlying the superficial varieties of nature; and though Rudolf Raspe appeared many times, and related the adventures of his Baron Munchausen in many languages, it was only a hundred years ago that he managed to raise a laugh over them. It has taken nearly another hundred to reveal the humour of Munchausenisms that relate to invisible and future worlds. The Dragon which now haunts the imagination of a few compulsory voyagers beyond the grave originated in speculations concerning the unseen shores of equally mythical realms, whose burning zones and frozen seas had not yet been detached from this planet to make the Inferno of another. In our section on Demonology we have considered many of these imaginary forms in detail, limiting ourselves generally to the more realistic embodiments of special obstacles. Just above that formation comes the stratum in which we find the separate features of the previous demonic fauna combining to forms which indicate the new creative power which, as we have seen, makes nature over again in its own image. Beginning thus on the physical plane, with a view of passing to the social, political, and metaphysical arenas where man has successively met his Dragons, we may first consider the combination of terrors and perils, real and imaginary, which were confronted by the early colonist. I will venture to call this the Colonial Dragon. This form may be represented by any of those forms against which the Prometheus of Æschylus cautions Io on her way to the realm which should be called Ionia. 'When thou shalt have crossed the stream that bounds the continents to the rosy realms of the morning where the sun sets forth, ... thou shalt reach beyond the roaring sea Cisthene's Gorgonian plains, where dwell the Phorkides, ... and hard by are their three winged sisters, the Snake-haired Gorgons, by mortals abhorred, on whom none of human race can look and live.... Be on thy guard against the Gryphons, sharp-fanged hounds of Jove that never bark, and against the cavalry host of one-eyed Arimaspians, dwelling on the gold-gushing fount, the stream of Pluto. Thou wilt reach a distant land, a dark tribe, near to the fount of the sun, where runs the river Æthiops.' [244]