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These legends of the violent ends of the Roman kings suggest that the contest by which they gained the throne may sometimes have been a mortal combat rather than a race. If that were so, the analogy which we have traced between Rome and Nemi would be still closer. At both places the sacred kings, the living representatives of the godhead, would thus be liable to suffer deposition and death at the hand of any resolute man who could prove his divine right to the holy office by the strong arm and the sharp sword. It would not be surprising if among the early Latins the claim to the kingdom should often have been settled by single combat; for down to historical times the Umbrians regularly submitted their private disputes to the ordeal of battle, and he who cut his adversary's throat was thought thereby to have proved the justice of his cause beyond the reach of cavil.

Chapter 15. The Worship of the Oak

THE WORSHIP of the oak tree or of the oak god appears to have been shared by all the branches of the Aryan stock in Europe. Both Greeks and Italians associated the tree with their highest god, Zeus or Jupiter, the divinity of the sky, the rain, and the thunder. Perhaps the oldest and certainly one of the most famous sanctuaries in Greece was that of Dodona, where Zeus was revered in the oracular oak. The thunder-storms which are said to rage at Dodona more frequently than anywhere else in Europe, would render the spot a fitting home for the god whose voice was heard alike in the rustling of the oak leaves and in the crash of thunder. Perhaps the bronze gongs which kept up a humming in the wind round the sanctuary were meant to mimick the thunder that might so often be heard rolling and rumbling in the coombs of the stern and barren mountains which shut in the gloomy valley. In Boeotia, as we have seen, the sacred marriage of Zeus and Hera, the oak god and the oak goddess, appears to have been celebrated with much pomp by a religious federation of states. And on Mount Lycaeus in Arcadia the character of Zeus as god both of the oak and of the rain comes out clearly in the rain charm practised by the priest of Zeus, who dipped an oak branch in a sacred spring. In his latter capacity Zeus was the god to whom the Greeks regularly prayed for rain. Nothing could be more natural; for often, though not always, he had his seat on the mountains where the clouds gather and the oaks grow. On the Acropolis at Athens there was an image of Earth praying to Zeus for rain. And in time of drought the Athenians themselves prayed, Rain, rain, O dear Zeus, on the cornland of the Athenians and on the plains.

Again, Zeus wielded the thunder and lightning as well as the rain. At Olympia and elsewhere he was worshipped under the surname of Thunderbolt; and at Athens there was a sacrificial hearth of Lightning Zeus on the city wall, where some priestly officials watched for lightning over Mount Parnes at certain seasons of the year. Further, spots which had been struck by lightning were regularly fenced in by the Greeks and consecrated to Zeus the Descender, that is, to the god who came down in the flash from heaven. Altars were set up within these enclosures and sacrifices offered on them. Several such places are known from inscriptions to have existed in Athens.

Thus when ancient Greek kings claimed to be descended from Zeus, and even to bear his name, we may reasonably suppose that they also attempted to exercise his divine functions by making thunder and rain for the good of their people or the terror and confusion of their foes. In this respect the legend of Salmoneus probably reflects the pretensions of a whole class of petty sovereigns who reigned of old, each over his little canton, in the oak-clad highlands of Greece. Like their kinsmen the Irish kings, they were expected to be a source of fertility to the land and of fecundity to the cattle; and how could they fulfil these expectations better than by acting the part of their kinsman Zeus, the great god of the oak, the thunder, and the rain? They personified him, apparently, just as the Italian kings personified Jupiter.

In ancient Italy every oak was sacred to Jupiter, the Italian counterpart of Zeus; and on the Capitol at Rome the god was worshipped as the deity not merely of the oak, but of the rain and the thunder. Contrasting the piety of the good old times with the scepticism of an age when nobody thought that heaven was heaven, or cared a fig for Jupiter, a Roman writer tells us that in former days noble matrons used to go with bare feet, streaming hair, and pure minds, up the long Capitoline slope, praying to Jupiter for rain. And straightway, he goes on, it rained bucketsful, then or never, and everybody returned dripping like drowned rats. But nowadays, says he, we are no longer religious, so the fields lie baking.

When we pass from Southern to Central Europe we still meet with the great god of the oak and the thunder among the barbarous Aryans who dwelt in the vast primaeval forests. Thus among the Celts of Gaul the Druids esteemed nothing more sacred than the mistletoe and the oak on which it grew; they chose groves of oaks for the scene of their solemn service, and they performed none of their rites without oak leaves. The Celts, says a Greek writer, worship Zeus, and the Celtic image of Zeus is a tall oak. The Celtic conquerors, who settled in Asia in the third century before our era, appear to have carried the worship of the oak with them to their new home; for in the heart of Asia Minor the Galatian senate met in a place which bore the pure Celtic name of Drynemetum, the sacred oak grove or the temple of the oak. Indeed the very name of Druids is believed by good authorities to mean no more than oak men.

In the religion of the ancient Germans the veneration for sacred groves seems to have held the foremost place, and according to Grimm the chief of their holy trees was the oak. It appears to have been especially dedicated to the god of thunder, Donar or Thunar, the equivalent of the Norse Thor; for a sacred oak near Geismar, in Hesse, which Boniface cut down in the eighth century, went among the heathen by the name of Jupiter's oak (robur Jovis), which in old German would be Donares eih, the oak of Donar. That the Teutonic thunder god Donar, Thunar, Thor was identified with the Italian thunder god Jupiter appears from our word Thursday, Thunar's day, which is merely a rendering of the Latin dies Jovis. Thus among the ancient Teutons, as among the Greeks and Italians, the god of the oak was also the god of the thunder. Moreover, he was regarded as the great fertilising power, who sent rain and caused the earth to bear fruit; for Adam of Bremen tells us that Thor presides in the air; he it is who rules thunder and lightning, wind and rains, fine weather and crops. In these respects, therefore, the Teutonic thunder god again resembled his southern counterparts Zeus and Jupiter.

Amongst the Slavs also the oak appears to have been the sacred tree of the thunder god Perun, the counterpart of Zeus and Jupiter. It is said that at Novgorod there used to stand an image of Perun in the likeness of a man with a thunder-stone in his hand. A fire of oak wood burned day and night in his honour; and if ever it went out the attendants paid for their negligence with their lives. Perun seems, like Zeus and Jupiter, to have been the chief god of his people; for Procopius tells us that the Slavs believe that one god, the maker of lightning, is alone lord of all things, and they sacrifice to him oxen and every victim.

The chief deity of the Lithuanians was Perkunas or Perkuns, the god of thunder and lightning, whose resemblance to Zeus and Jupiter has often been pointed out. Oaks were sacred to him, and when they were cut down by the Christian missionaries, the people loudly complained that their sylvan deities were destroyed. Perpetual fires, kindled with the wood of certain oak-trees, were kept up in honour of Perkunas; if such a fire went out, it was lighted again by friction of the sacred wood. Men sacrificed to oak-trees for good crops, while women did the same to lime-trees; from which we may infer that they regarded oaks as male and lime-trees as female. And in time of drought, when they wanted rain, they used to sacrifice a black heifer, a black he-goat, and a black cock to the thunder god in the depths of the woods. On such occasions the people assembled in great numbers from the country round about, ate and drank, and called upon Perkunas. They carried a bowl of beer thrice round the fire, then poured the liquor on the flames, while they prayed to the god to send showers. Thus the chief Lithuanian deity presents a close resemblance to Zeus and Jupiter, since he was the god of the oak, the thunder, and the rain.

From the foregoing survey it appears that a god of the oak, the thunder, and the rain was worshipped of old by all the main branches of the Aryan stock in Europe, and was indeed the chief deity of their pantheon.

Chapter 16. Dianus and Diana

IN THIS CHAPTER I propose to recapitulate the conclusions to which the enquiry has thus far led us, and drawing together the scattered rays of light, to turn them on the dark figure of the priest of Nemi.

We have found that at an early stage of society men, ignorant of the secret processes of nature and of the narrow limits within which it is in our power to control and direct them, have commonly arrogated to themselves functions which in the present state of knowledge we should deem superhuman or divine. The illusion has been fostered and maintained by the same causes which begot it, namely, the marvellous order and uniformity with which nature conducts her operations, the wheels of her great machine revolving with a smoothness and precision which enable the patient observer to anticipate in general the season, if not the very hour, when they will bring round the fulfilment of his hopes or the accomplishment of his fears. The regularly recurring events of this great cycle, or rather series of cycles, soon stamp themselves even on the dull mind of the savage. He foresees them, and foreseeing them mistakes the desired recurrence for an effect of his own will, and the dreaded recurrence for an effect of the will of his enemies. Thus the springs which set the vast machine in motion, though they lie far beyond our ken, shrouded in a mystery which we can never hope to penetrate, appear to ignorant man to lie within his reach: he fancies he can touch them and so work by magic art all manner of good to himself and evil to his foes. In time the fallacy of this belief becomes apparent to him: he discovers that there are things he cannot do, pleasures which he is unable of himself to procure, pains which even the most potent magician is powerless to avoid. The unattainable good, the inevitable ill, are now ascribed by him to the action of invisible powers, whose favour is joy and life, whose anger is misery and death. Thus magic tends to be displaced by religion, and the sorcerer by the priest. At this stage of thought the ultimate causes of things are conceived to be personal beings, many in number and often discordant in character, who partake of the nature and even of the frailty of man, though their might is greater than his, and their life far exceeds the span of his ephemeral existence. Their sharply-marked individualities, their clear-cut outlines have not yet begun, under the powerful solvent of philosophy, to melt and coalesce into that single unknown substratum of phenomena which, according to the qualities with which our imagination invests it, goes by one or other of the high-sounding names which the wit of man has devised to hide his ignorance. Accordingly, so long as men look on their gods as beings akin to themselves and not raised to an unapproachable height above them, they believe it to be possible for those of their own number who surpass their fellows to attain to the divine rank after death or even in life. Incarnate human deities of this latter sort may be said to halt midway between the age of magic and the age of religion. If they bear the names and display the pomp of deities, the powers which they are supposed to wield are commonly those of their predecessor the magician. Like him, they are expected to guard their people against hostile enchantments, to heal them in sickness, to bless them with offspring, and to provide them with an abundant supply of food by regulating the weather and performing the other ceremonies which are deemed necessary to ensure the fertility of the earth and the multiplication of animals. Men who are credited with powers so lofty and far-reaching naturally hold the highest place in the land, and while the rift between the spiritual and the temporal spheres has not yet widened too far, they are supreme in civil as well as religious matters: in a word, they are kings as well as gods. Thus the divinity which hedges a king has its roots deep down in human history, and long ages pass before these are sapped by a profounder view of nature and man.

In the classical period of Greek and Latin antiquity the reign of kings was for the most part a thing of the past; yet the stories of their lineage, titles, and pretensions suffice to prove that they too claimed to rule by divine right and to exercise superhuman powers. Hence we may without undue temerity assume that the King of the Wood at Nemi, though shorn in later times of his glory and fallen on evil days, represented a long line of sacred kings who had once received not only the homage but the adoration of their subjects in return for the manifold blessings which they were supposed to dispense. What little we know of the functions of Diana in the Arician grove seems to prove that she was here conceived as a goddess of fertility, and particularly as a divinity of childbirth. It is reasonable, therefore, to suppose that in the discharge of these important duties she was assisted by her priest, the two figuring as King and Queen of the Wood in a solemn marriage, which was intended to make the earth gay with the blossoms of spring and the fruits of autumn, and to gladden the hearts of men and women with healthful offspring.

If the priest of Nemi posed not merely as a king, but as a god of the grove, we have still to ask, What deity in particular did he personate? The answer of antiquity is that he represented Virbius, the consort or lover of Diana. But this does not help us much, for of Virbius we know little more than the name. A clue to the mystery is perhaps supplied by the Vestal fire which burned in the grove. For the perpetual holy fires of the Aryans in Europe appear to have been commonly kindled and fed with oak-wood, and in Rome itself, not many miles from Nemi, the fuel of the Vestal fire consisted of oaken sticks or logs, as has been proved by a microscopic analysis of the charred embers of the Vestal fire, which were discovered by Commendatore G. Boni in the course of the memorable excavations which he conducted in the Roman forum at the end of the nineteenth century. But the ritual of the various Latin towns seems to have been marked by great uniformity; hence it is reasonable to conclude that wherever in Latium a Vestal fire was maintained, it was fed, as at Rome, with wood of the sacred oak. If this was so at Nemi, it becomes probable that the hallowed grove there consisted of a natural oak-wood, and that therefore the tree which the King of the Wood had to guard at the peril of his life was itself an oak; indeed, it was from an evergreen oak, according to Virgil, that Aeneas plucked the Golden Bough. Now the oak was the sacred tree of Jupiter, the supreme god of the Latins. Hence it follows that the King of the Wood, whose life was bound up in a fashion with an oak, personated no less a deity than Jupiter himself. At least the evidence, slight as it is, seems to point to this conclusion. The old Alban dynasty of the Silvii or Woods, with their crown of oak leaves, apparently aped the style and emulated the powers of Latian Jupiter, who dwelt on the top of the Alban Mount. It is not impossible that the King of the Wood, who guarded the sacred oak a little lower down the mountain, was the lawful successor and representative of this ancient line of the Silvii or Woods. At all events, if I am right in supposing that he passed for a human Jupiter, it would appear that Virbius, with whom legend identified him, was nothing but a local form of Jupiter, considered perhaps in his original aspect as a god of the greenwood.