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CHAP. 68. (68.)
WHAT PART OF THE EARTH IS INHABITED.
In the first place, then, it appears, that this should be estimated at half the globe, as if no portion of this half was encroached upon by the ocean. But surrounding as it does the whole of the land, pouring out and receiving all the other waters, furnishing whatever goes to the clouds, and feeding the stars themselves, so numerous and of such great size as they are, what a great space must we not suppose it to occupy! This vast mass must fill up and occupy an infinite extent. To this we must add that portion of the remainder which the heavens take from us. For the globe is divided into five parts, termed zones, and all that portion is subject to severe cold and perpetual frost which is under the two extremities, about each of the poles, the nearer of which is called the north, and the opposite the south, pole. In all these regions there is perpetual darkness, and, in consequence of the aspect of the milder stars being turned from them, the light is malignant, and only like the whiteness which is produced by hoar frost. The middle of the earth, over which is the orbit of the sun, is parched and burned by the flame, and is consumed by being so near the heat. There are only two of the zones which are temperate, those which lie between the torrid and the frigid zones, and these are separated from each other, in consequence of the scorching heat of the heavenly bodies. It appears, therefore, that the heavens take from us three parts of the earth; how much the ocean steals is uncertain.
And with respect to the part which is left us, I do not know whether that is not even in greater danger. This same ocean, insinuating itself, as I have described it, into a number of bays, approaches with its roaring so near to the inland seas, that the Arabian Gulf is no more than 115 miles from the Egyptian Sea, and the Caspian only 375 miles from the Euxine. It also insinuates itself into the numerous seas by which it separates Africa, Europe, and Asia; hence how much space must it occupy? We must also take into account the extent of all the rivers and the marshes, and we must add the lakes and the pools. There are also the mountains, raised up to the heavens, with their precipitous fronts; we must also subtract the forests and the craggy valleys, the wildernesses, and the places, which, from various causes, are desert. The vast quantity which remains of the earth, or rather, as many persons have considered it, this speck of a world (for the earth is no more in regard to the universe), this is the object, the seat of our glory — here we bear our honours, here we exercise our power, here we covet wealth, here we mortals create our disturbances, here we continually carry on our wars, aye, civil wars, even, and unpeople the earth by mutual slaughter. And not to dwell on public feuds, entered into by nations against each other, here it is that we drive away our neighbours, and enclose the land thus seized upon within our own fence; and yet the man who has most extended his boundary, and has expelled the inhabitants for ever so great a distance, after all, what mighty portion of the earth is he master of? And even when his avarice has been the most completely satisfied, what part of it can he take with him into the grave?
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CHAP. 69. (69.)
THAT THE EARTH IS IN THE MIDDLE OF THE WORLD.
It is evident from undoubted arguments, that the earth is in the middle of the universe, but it is the most clearly proved by the equality of the days and the nights at the equinox. It is demonstrated by the quadrant, which affords the most decisive confirmation of the fact, that unless the earth was in the middle, the days and nights could not be equal; for, at the time of the equinox, the rising and setting of the sun are seen on the same line, and the rising of the sun, at the summer solstice, is on the same line with its setting at the winter solstice; but this could not happen if the earth was not situated in the centre
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CHAP. 70. (70.)
OF THE OBLIQUITY OF THE ZONES.
The three circles, which are connected with the abovementioned zones, distinguish the inequalities of the seasons; those are, the solstitial circle, which proceeds from the part of the Zodiac the highest to us and approaching the nearest to the district of the north; on the other side, the brumal, which is towards the south pole; and the equinoctial, which traverses the middle of the Zodiac.
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CHAP. 71.
OF THE INEQUALITY OF CLIMATES.
The cause of the other things which are worthy of our admiration depends on the figure of the earth itself, which, together with all its waters, is proved, by the same arguments, to be a globe. This certainly is the cause why the stars of the northern portion of the heavens never set to us, and why, on the other hand, those in the south never rise, and again, why the latter can never be seen by the former, the globe of the earth rising up and concealing them. The Northern Wain is never seen in Troglodytice, nor in Egypt, which borders on it; nor can we, in Italy, see the star Canopus, or Berenice’s Hair; nor what, under the Emperor Augustus, was named Cæsar’s Throne, although they are, there, very brilliant stars. The curved form of the earth is so obvious, rising up like a ridge, that Canopus appears to a spectator at Alexandria to rise above the horizon almost the quarter of a sign; the same star at Rhodes appears, as it were, to graze along the earth, while in Pontus it is not seen at all; where the Northern Wain appears considerably elevated. This same constellation cannot be seen at Rhodes, and still less at Alexandria. In Arabia, in the month of November, it is concealed during the first watch of the night, but may be seen during the second; in Meroë it is seen, for a short time, in the evening, at the solstice, and it is visible at day-break, for a few days before the rising of Arcturus. These facts have been principally ascertained by the expeditions of navigators; the sea appearing more elevated or depressed in certain parts; the stars suddenly coming into view, and, as it were, emerging from the water, after having been concealed by the bulging out of the globe. But the heavens do not, as some suppose, rise higher at one pole, otherwise its stars would be seen from all parts of the world; they indeed are supposed to be higher by those who are nearest to them, but the stars are sunk below the horizon to those who are more remote. As this pole appears to be elevated to those who are beneath it; so, when we have passed along the convexity of the earth, those stars rise up, which appear elevated to the inhabitants of those other districts; all this, however, could not happen unless the earth had the shape of a globe.
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CHAP. 72.
IN WHAT PLACES ECLIPSES ARE INVISIBLE, AND WHY THIS IS THE CASE.
Hence it is that the inhabitants of the east do not see those eclipses of the sun or of the moon which occur in the evening, nor the inhabitants of the west those in the morning, while such as take place at noon are more frequently visible. We are told, that at the time of the famous victory of Alexander the Great, at Arbela, the moon was eclipsed at the second hour of the night, while, in Sicily, the moon was rising at the same hour. The eclipse of the sun which occurred the day before the calends of May, in the consulship of Vipstanus and Fonteius, not many years ago, was seen in Campania between the seventh and eighth hour of the day; the general Corbulo informs us, that it was seen in Armenia, between the eleventh and twelfth hour; thus the curve of the globe both reveals and conceals different objects from the inhabitants of its different parts. If the earth had been flat, everything would have been seen at the same time, from every part of it, and the nights would not have been unequal; while the equal intervals of twelve hours, which are now observed only in the middle of the earth, would in that case have been the same everywhere.
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CHAP. 73. (71.)
WHAT REGULATES THE DAYLIGHT ON THE EARTH.
Hence it is that there is not any one night and day the same, in all parts of the earth, at the same time; the intervention of the globe producing night, and its turning round producing day. This is known by various observations. In Africa and in Spain it is made evident by the Towers of Hannibal, and in Asia b
y the beacons, which, in consequence of their dread of pirates, the people erected for their protection; for it has been frequently observed, that the signals, which were lighted at the sixth hour of the day, were seen at the third hour of the night by those who were the most remote. Philonides, a courier of the above-mentioned Alexander, went from Sicyon to Elis, a distance of 1200 stadia, in nine hours, while he seldom returned until the third hour of the night, although the road was down-hill. The reason is, that, in going, he followed the course of the sun, while on his return, in the opposite direction, he met the sun and left it behind him. For the same reason it is, that those who sail to the west, even on the shortest day, compensate for the difficulty of sailing in the night and go farther, because they sail in the same direction with the sun.
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CHAP. 74. (72.)
REMARKS ON DIALS, AS CONNECTED WITH THIS SUBJECT.
The same dial-plates cannot be used in all places, the shadow of the sun being sensibly different at distances of 300, or at most of 500 stadia. Hence the shadow of the dial-pin, which is termed the gnomon, at noon and at the summer solstice, in Egypt, is a little more than half the length of the gnomon itself At the city of Rome it is only 1/9 less than the gnomon, at Ancona not more than 1/35 less, while in the part of Italy which is called Venetia, at the same hour, the shadow is equal to the length of the gnomon.
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CHAP. 75. (73.)
WHEN AND WHERE THERE ARE NO SHADOWS.
It is likewise said, that in the town of Syene, which is 5000 stadia south of Alexandria, there is no shadow at noon, on the day of the solstice; and that a well, which was sunk for the purpose of the experiment, is illuminated by the sun in every part. Hence it appears that the sun, in this place, is vertical, and Onesicritus informs us that this is the case, about the same time, in India, at the river Hypasis. It is well known, that at Berenice, a city of the Troglodytæ, and 4820 stadia beyond that city, in the same country, at the town of Ptolemais, which was built on the Red Sea, when the elephant was first hunted, this same thing takes place for forty-five days before the solstice and for an equal length of time after it, and that during these ninety days the shadows are turned towards the south. Again, at Meroë, an island in the Nile and the metropolis of the Æthiopians, which is 5000 stadia from Syene, there are no shadows at two periods of the year, viz. when the sun is in the 18th degree of Taurus and in the 14th of Leo. The Oretes, a people of India, have a mountain named Maleus, near which the shadows in sum- mer fall towards the south and in winter towards the north. The seven stars of the Great Bear are visible there for fifteen nights only. In India also, in the celebrated sea-port Patale, the sun rises to the right hand and the shadows fall towards the south. While Alexander was staving there it was observed, that the seven northern stars were seen only during the early part of the night. Onesicritus, one of his generals, informs us in his work, that in those places in India where there are no shadows, the seven stars are not visible; these places, he says, are called “Ascia,” and the people there do not reckon the time by hours.
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CHAP. 76. (74.)
WHERE THIS TAKES PLACE TWICE IN THE YEAR AND WHERE THE SHADOWS FALL IN OPPOSITE DIRECTIONS.
Eratosthenes informs us, that in the whole of Troglodytice, for twice forty-five days in the year, the shadows fall in the contrary direction.
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CHAP. 77. (75.)
WHERE THE DAYS ARE THE LONGEST AND WHERE THE SHORTEST.
Hence it follows, that in consequence of the daylight increasing in various degrees, in Meroë the longest day consists of twelve æquinoctial hours and eight parts of an hour, at Alexandria of fourteen hours, in Italy of fifteen, in Britain of seventeen; where the degree of light, which exists in the night, very clearly proves, what the reason of the thing also obliges us to believe, that, during the solstitial period, as the sun approaches to the pole of the world, and his orbit is contracted, the parts of the earth that lie below him have a day of six months long, and a night of equal length when he is removed to the south pole. Pytheas, of Marseilles, informs us, that this is the case in the island of Thule, which is six days’ sail from the north of Britain. Some persons also affirm that this is the case in Mona, which is about 200 miles from Camelodunum, a town of Britain.
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CHAP. 78. (76.)
OF THE FIRST DIAL.
Anaximenes the Milesian, the disciple of Anaximander, of whom I have spoken above, discovered the theory of shadows and what is called the art of dialling, and he was the first who exhibited at Lacedæmon the dial which they call sciothericon.
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CHAP. 79. (77.)
OF THE MODE IN WHICH THE DAYS ARE COMPUTED.
The days have been computed by different people in different ways. The Babylonians reckoned from one sunrise to the next; the Athenians from one sunset to the next; the Umbrians from noon to noon; the multitude, universally, from light to darkness; the Roman priests and those who presided over the civil day, also the Egyptians and Hipparchus, from midnight to midnight. It appears that the interval from one sunrise to the next is less near the solstices than near the equinoxes, because the position of the zodiac is more oblique about its middle part, and more straight near the solstice.
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CHAP. 80. (78.)
OF THE DIFFERENCE OF NATIONS AS DEPENDING ON THE NATURE OF THE WORLD.
To these circumstances we must add those that are connected with certain celestial causes. There can be no doubt, that the Æthiopians are scorched by their vicinity to the sun’s heat, and they are born, like persons who have been burned, with the beard and hair frizzled; while, in the opposite and frozen parts of the earth, there are nations with white skins and long light hair. The latter are savage from the inclemency of the climate, while the former are dull from its variableness. We learn, from the form of the legs, that in the one, the fluids, like vapour, are forced into the upper parts of the body, while in the other, being a gross humour, it is drawn downwards into the lower parts. In the cold regions savage beasts are produced, and in the others, various forms of animals, and many kinds of birds. In both situations the body grows tall, in the one case by the force of fire, and in the other by the nutritive moisture.
In the middle of the earth there is a salutary mixture of the two, a tract fruitful in all things, the habits of the body holding a mean between the two, with a proper tempering of colours; the manners of the people are gentle, the intellect clear, the genius fertile and capable of comprehending every part of nature. They have formed empires, which has never been done by the remote nations; yet these latter have never been subjected by the former, being severed from them and remaining solitary, from the effect produced on them by their savage nature.
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CHAP. 81. (79.)
OF EARTHQUAKES.
According to the doctrine of the Babylonians, earthquakes and clefts of the earth, and occurrences of this kind, are supposed to be produced by the influence of the stars, especially of the three to which they ascribe thunder; and to be caused by the stars moving with the sun, or being in conjunction with it, and, more particularly, when they are in the quartile aspect. If we are to credit the report, a most admirable and immortal spirit, as it were of a divine nature, should be ascribed to Anaximander the Milesian, who, they say, warned the Lacedæmonians to beware of their city and their houses. For he predicted that an earthquake was at hand, when both the whole of their city was destroyed and a large portion of Mount Taygetus, which projected in the form of a ship, was broken off, and added farther ruin to the previous destruction. Another prediction is ascribed to Pherecydes, the master of Pythagoras, and this was divine; by a draught of water from a well, he foresaw and predicted that there would be an earthquake in that place. And if these things be true, how nearly do these indiv
iduals approach to the Deity, even during their lifetime! But I leave every one to judge of these matters as he pleases. I certainly conceive the winds to be the cause of earthquakes; for the earth never trembles except when the sea is quite calm, and when the heavens are so tranquil that the birds cannot maintain their flight, all the air which should support them being withdrawn; nor does it ever happen until after great winds, the gust being pent up, as it were, in the fissures and concealed hollows. For the trembling of the earth resembles thunder in the clouds; nor does the yawning of the earth differ from the bursting of the lightning; the enclosed air struggling and striving to escape.
Delphi Complete Works of Pliny the Elder Page 9
