of Crates of Mallus ( BC) as imagined by a 20th century artist According to
Strabo, Crates devised a
globe representing the
Earth, which is thus the earliest known globe representing the Earth: We have now traced on a spherical surface the area in which we say the inhabited world is situated; and the man who would most closely approximate the truth by constructed figures must necessarily take for the earth a globe like that of Crates, and lay off on it the quadrilateral, and within the quadrilateral put down the map of the inhabited world. But since the need of a large globe, so that the section in question (being a small fraction of the globe) may be large enough to receive distinctly the appropriate parts of the inhabited world and to present the proper appearance to observers, it is better for him to construct a globe of adequate size, if he can do so; and let it be no less than ten feet in diameter. Following the theory of
five climatic zones, Crates considered that the
torrid zone is occupied by the
Ocean and that, by analogy, one can imagine people living beyond the torrid zone: For Crates, following the mere form of mathematical demonstration, says that the torrid zone is "occupied" by
Oceanus and that on both sides of this zone are the temperate zones, the one being on our side, while the other is on the other side of it. Now, just as these
Ethiopians on our side of Oceanus, who face the south throughout the whole length of the inhabited land, are called the most remote of the one group of peoples, since they dwell on the shores of Oceanus, so too, Crates thinks, we must conceive that on the other side of Oceanus also there are certain Ethiopians, the most remote of the other group of peoples in the temperate zone, since they dwell on the shores of this same Oceanus; and that they are in two groups and are "sundered in twain" by Oceanus. ,
Athens, Greece. The classic drawing of the sphere displays the known world, or Oecumene (Europe, North Africa, and Asia), with three other continents, labeled the Perioeci, the Antipodes, and the Antioeci. Crates' Perioeci and Antipodes arguably do exist, corresponding roughly to
North America and
South America respectively, but the continent of the Antioeci,
Terra Australis, does not, except in fragments (
Australasia and southern Africa). The earth does, in fact, have a ring of water around it, but at the
60th parallel south, not at the Equator. ==Notes==