Toward the close of the medieval period there were certain thinkers who attempted to reconcile the spherical theory with the belief that the inhabited part of the earth is an island. These appear to have believed that the earth is a globe partly submerged in a larger sphere composed of water.[18] The visible parts of the earth would rise above the surrounding ocean like a huge island, and the Biblical passages which had caused so much difficulty could thus be interpreted in accord with apparent facts. It is quite clear that the author of the _King’s Mirror_ held no such theory. In a poetic description of how the eight winds form their covenants of friendship at the approach of spring, he tells us that “at midnight the north wind goes forth to meet the coursing sun and leads him through rocky deserts toward the sparse-built shores.”[19] The author, therefore, seems to believe that the earth is a sphere, that there are lands on the opposite side of the earth, and that these lands are inhabited. He also understands that the regions that lie beneath the midnight course of the sun in spring and summer must be thinly populated, as the sun’s path on the opposite side of the earth during the season of lengthening days is constantly approaching nearer the pole. Footnote 18: Ruge, _Geschichte des Zeitalters der Entdeckungen_, 97. Footnote 19: C. v. But while the author seems to accept the Ptolemaic theory of the universe, he is not able to divest his mind entirely of current geographical notions. There can be no doubt that he believed in the encircling outer ocean, and it is barely possible that he also looked with favor on the belief that the whole was encompassed by a girdle of fire. On this point, however, we cannot be sure: he mentions the belief merely as one that is current, not as one accepted by himself.[20] Footnote 20: C. xix.