With the coming of night, Siluk, the Storm-God, laid a heavy hand upon the cowering jungle. Now, the coming of night in the Upper Amazon is in itself an awe-inspiring event; but coupled with the furious onslaught of Siluk, the Storm-God, it is terrible.

In the tropics there is not the lengthy twilight of a temperate clime; nor the fearsome splendor of the Aurora Borealis with its million streamers of ghastly light shooting into the heavens in a fan-shaped flare of quivering color to lend mystery and enchantment to the long months of the frigid, scintillating polar night.

One moment, the sun like a brassy ball of fire hangs low upon the threatening horizon; the next, it has dropped into the belt of grayish mist that marks the earth’s end and darkness has spread its silent, ominous mantle over the forest. Almost, as a room is plunged into blackness upon the snuffing out of a candle at midnight, so the jungle is flooded with gloom at the snap of the solar switch.

Uru, the great howling monkey, eyed with suspicion the bank of angry clouds descending from the slopes of the dark mountain masses to the west. Then he turned to his party, five in number, and from his throat there emanated a few gruff barks followed by a long-drawn, rumbling roar. The females hugged close the branches, gave one furtive look at the threatening sky, and joined their voices in the deafening chorus that shook the wide-spreading canopy of the tall ceiba tree and penetrated into the innermost recesses of the jungle a distance measured in miles. Then the troop clumsily made its way over the swaying branches and sought a friendly shelter in the crown of a chonta palm.The wild things of the forest heard the warning and understood its meaning. From the snug security of the cavernous greenheart, the little, woolly douroucoulis or night monkeys roused themselves from their daylight slumbers, peered out into the fading light with round, blinking eyes, and then curled up again for another nap.

Sama, the tapir, one massive forefoot raised in midair, stopped soothing with his tongue the ugly gash inflicted by Ueshe, leader of the peccary herd when he had incautiously stumbled into its midst, and listened. His mind had been made up that to-night he should feast on the luscious grass growing so abundantly in the bed of the broad, nearly dry river. But the swelling chorus from the treetops caused Sama hastily to reach another decision. He would remain where he was, in the dense brake of chuchilla canes and satisfy his hunger on their coarser leaves. The river bed was too exposed to danger. In the all but impenetrable cane thicket lay at least a measure of safety.Even Picici, the bushmaster, largest and deadliest of all the poisonous snakes heard—and heeded. Not one muscle in all his nine feet of tightly coiled, scale-covered body quivered. Ordinarily, Picici feared not one living thing. In the jungle he was supposed to reign supreme, save only for Muzurama, the black snake who could successfully engage him in combat if he chose; but this enemy was so rare as to be almost negligible. The other animals instinctively knew and feared his lightning thrust and death-dealing fangs. But Siluk, the Storm-God was different—an intangible, elusive something he did not understand, could not subdue. And the terror that Siluk brought was even worse, for it stalked boldly in the night and slew without warning or mercy. And so the mighty serpent was contented merely to remain in the damp, evil-smelling burrow under the decaying vegetation to wait and to watch.

About the only creatures to remain unaffected by the approach of the storm were the birds in the treetops; to them the thing it heralded meant a superabundance of food and a denser, more protective growth of vegetation. And the stupid Agoutis, overgrown guinea-pigs they were, who could never profit by past experiences anyway, either squatted comfortably in their burrows or stole out noiselessly to nibble the tender shoots, as suited their fancy.

The hush that fell upon the jungle was appalling. It was the great, breathless silence of fear and apprehension. But the suspense was of short duration.

A sighing breeze sifted its way through the whimpering leaves; again the deadly calm; then a dull roar, distant at first, but gaining in volume with each passing heartbeat. With a crash that rent the tallest ceiba from the topmost branches to the buttressed roots, Siluk arrived. The trees bent and groaned before the furious onslaught of the wind that enfiladed their ranks and tore off branches a foot through and hurled them to the ground; a deluge of water beat down upon them from above; and in the glare of the brilliant, blue-green lightning flashes, the startled eyes of trembling wild things saw the weaker and more venerable monarchs of the forest succumb to the unequal struggle and fall with a roar that made itself heard above the drumfire peals of thunder.

But, terrible as the Storm-God was in all the majesty of his unleashed fury, it was not he alone that the trembling denizens of the wilderness feared. Rather, it was the thing he portended, the message he brought. For, with this coming of Siluk, began the dismal season of seemingly unending rains when the waters of the lowlands reached their flood stage and drove into the higher, forested country that crafty, merciless terror from which few were safe and which was held in awe and dreaded by even the strongest among them.

Suma, the Jaguar, basking in the glaring sunlight, awoke with a start, stretched her massive forelegs, yawned, then snapped halfheartedly at the annoying insects that buzzed about her ears and stung her lips; and lowered her head for another nap. But, sleep came slowly and then it was for short periods of time only. Something stirred within her and warned her of a coming danger—not from the other inhabitants of the wilderness for among them there was none to dispute her sovereignty; rather, she looked upon the wild folk as creatures that had been provided to satisfy her hunger, gratify her whims when in a playful mood, or upon which to vent her rage. Besides, the flat-topped rock she had chosen for her daily resting place was well out from the banks where unknown peril might lurk and high enough above the sluggish, yellow river to discourage the designing crocodiles that swarmed below. In the open, and in a fair fight these repulsive reptiles were easy victims of her power and cunning; but, taken unawares, she would find them formidable adversaries. For this reason she drank only of the shallowest pools, and refrained from swimming, reaching her abiding place over a series of conveniently-placed boulders that served as stepping stones.All through the torrid day the disquieting impulse warned her to be up and on her way—just as the birds feel the urge of an irresistible voice to desert the land of their birth and to seek a foreign clime as the change of the season draws near, and, heeding it, run the gauntlet of long migrations through uncharted space.

But, Suma was loath to give up the life of ease and plenty on the sandbanks for the sterner existence in the forested country. Not until she was driven from them would she undertake the long, fatiguing journey to the more elevated regions.

The river was at its lowest stage. Vast islands and low, flat bars dotted its winding course. The latter extended far as the eye could see on both sides of the now narrow channel. Young turtles in legion were emerging from the hot, sun-baked sand and making for the water the instant they breathed the outer air as if their very lives depended on it, and they did—for during the hours of daylight there were herons, an ever-present host of hawks, and other predaceous birds waiting for the eggs to hatch and eager to feast on the defenseless horde the instant the little creatures pushed their heads through the crumbling sand and while they scrambled frantically toward the water and safety. At night the four-footed animals from miles around gathered on the bars to growl and to snarl at one another and to feast on the manna so bountifully spread by heaven for the delectation of all. Fights were almost unknown for full stomachs were not conducive to quarrelsomeness. Nor must it be thought that Nature was cruel to the turtles only to be generous to the other creatures. This very emergency had been amply provided for by the fact that each adult turtle during her annual visit to land deposited as many as one hundred eggs in the hole she carefully scooped in the sand, and had all her offspring survived the rivers would soon be overstocked, constituting a real menace to the perpetuation of the race. So long as the others took their toll, that generation was safe.Crocodiles too were bursting through their tough, leathery egg-shells, but in smaller numbers. They were vicious little creatures right from the start, snapping quickly and savagely at everything that interfered with their rapid march to the muddy stream. But they too had their enemies and numbers did not live to reach the water’s edge, in spite of the fact that the mother caiman had the unpleasant habit of keeping a watchful eye on her nest and escorting her brood to safety if she chanced to be present when it came into the world. If an overzealous jabirou stork or a gluttonous opossum ventured near she charged with a hoarse bellow that put the intruder to flight; and while she was thus engaged, some other keen-visaged marauder would be sure to take advantage of the opening created by her absence to satisfy his rapacious cravings.

But the turtles and the crocodiles were not the only delicacies the sandbars provided. There were iguanas two yards long, and on the knolls where the wind had blown the sand into heaps fat young skimmers and terns were testing their wings for the new life that lay before them in the air.

The shallow inlets were full of fish. They came out of the deeper water at night to spawn, and could be dragged ashore with little effort.

From such a well-stocked hunting ground Suma was not eager to depart. Day after day the journey was postponed, and the procrastination, as usual, brought evil consequences.

It was night, but a full moon, and the myriads of stars, beaming and twinkling in the glorious tropical sky, shed a mellow light on the sandbar where the last of the turtles were escaping from their prison shells. Suma feasted leisurely, then drank from the lazy stream, and sat straight upright like a huge cat and began unconcernedly to tidy up by licking her huge paws with her pink tongue and then applying them to her face.

A dull roar pierced the silence with a suddenness that was ominous. The Jaguar sprang to her feet and uneasily tested the air, first in one direction, then another. There was not a stir of wind. The sky was cloudless—the growing rumble was not thunder.

Onward came the mysterious sound with a terrifying swiftness, and Suma knew it must be the river. The abrupt bank was fully half a mile distant but toward it the startled creature bounded in gigantic leaps that took her over the sand with the speed of the wind. The goal had all but been attained when the cataclysm struck. A wall of water, four feet high and crested with foam came rushing down the river bed with incredible swiftness, engulfing everything within its reach. The sandbar with its varied population was submerged in a flash and as the air imprisoned in the wide cracks and crevices of the sun-baked surface rushed up toward freedom, the water seethed and boiled like the contents of a gigantic cauldron.

Completely overwhelmed by the first wave, Suma struggled frantically to regain her foothold and finding this impossible followed the path of least resistance and struck out boldly with the current until the water drained from her eyes and she could discern the bank which had been her objective. By varying her course slightly toward that side nearest the land she made fair progress and soon reached a point where the water was shallow and wearily dragged herself ashore. Pausing only long enough to shake the glistening drops from her shivering body she began the long journey westward for at last Suma was forced, reluctantly, to admit the truth. Days before, she had sensed the coming of the melancholy weeks of endless downpours with the attendant saturated earth; but the warning had gone unheeded. Now, when it was all but too late it served as a stimulus to redoubled effort; for the rains had started in the foothills and would soon extend their sway to the lower country.

Daylight found the journey well under way, with vast stretches of swamp and forest and plain to be traversed. Before her lay the wild pantenales, vast wastes of land and water. The inhabitants of these dismal places too felt the coming of the change for, between the sky, now overcast and angry for the first time in days, and the earth, seemingly waiting in sullen acquiescence to the dictates of a higher power, flecks of black soared in stately circles, or whirled in erratic courses, that were either manifestations of abject surrender to the inevitable, or else a show of frenzied despair, one could not tell which. The soaring flecks of black were flocks of graceful ibises sailing hour after hour on tireless wings and indistinguishable from vultures save for the long, outstretched necks and legs; for, outlined against the grayish heavens all the winged creatures appeared dark, no matter what their color. The whirling swarms were hordes of cormorants, herons, terns and skimmers defying every known law of gravity in their mad evolutions.

The chorus of screams and squawks from overhead could be heard for miles and chief among the offenders in this respect were the terns whose shrill voices and incessant clatter were like the cries of woe of demented souls. Below, the occasional bellow of a crocodile hidden in the reedy bed of a marsh or the high-pitched wail of the great brown wolf added its note to the clamor of the multitude.

Suma spent the nights only in travel. When the approach of day was heralded by the crimson glare in the eastern sky she sought shelter in one of the dark forest islands so liberally sprinkled over the pantenal country. To the Jaguar these were places of delight, free from disturbance and well suited for repose. To man, these same places would have been an inferno.

The tall trees, mostly of a wood known as quebracho, eagerly sought in other regions on account of its qualities of yielding tannin, rich dyes and compounds of medicinal worth, grew in dense clumps, the straight trunks packed close together and the spreading, leafy branches almost completely shutting out the daylight. More often than not reeking pools of black water formed the floor of these desolate places. Mosquitoes in clouds rose from the stagnant mire; their buzzing wings made an ever-present music for, the insects being of various kinds and sizes, the note contributed by each species was of a different pitch. Near the ground the din was maddening, and the bites of the ravenous creatures were sufficient to cause death.

The wily Jaguar avoided the intolerable annoyance and danger by seeking a partly-fallen, leaning tree-trunk, or a thick branch, fifteen or twenty feet above the ground. This was well above the zone of perpetual torment, for the obnoxious insects formed a stratum that hugged the earth. Among the branches the squirrels frolicked, whisking their plume-like tails and keeping at a respectable distance from every other animal that was not of their own family. Some of them were of extraordinary size, with red backs and white under parts; others belonged to the extreme lower end of the scale and were scarcely larger than good-sized mice; but they all seemed a good-natured, fun-loving lot that enjoyed life to the fullest extent.The Cebus monkeys were of a very different nature. They always wore tragic expressions on their faces and their lives were full of suffering and woe for they had enemies without numbers. If they showed themselves on the sunlit dome of the treetops, an eagle was always ready to pounce down upon them and carry away one of their number, screaming piteously, in its talons. When they descended to drink caimans were lurking near at hand to drag them into the dark depths below. Snakes of the constrictor family were not wanting among the branches; despite their huge size they had a habit of lying patiently in wait where the cover was thickest, or of appearing in the most unexpected places and after each of their swift lunges the monkey population was reduced by one. Then too, there was Suma, never averse to striking with murderous intent at anything that came within reach. The damp chill of the nights penetrated the bodies of the closely huddled groups, and caused them to shiver; and during the hottest hours of the day they trembled with the ague. So their existence, taken as a whole was a most unfortunate and melancholy one.

There were also other denizens of the dismal places. At noon the marsh deer with wide-spreading antlers sought them out as the only available protection from the blistering sunlight. But they were wary creatures, ever on the alert, sensing danger and fleeing from it before their position was really imperilled. The tapirs too were shy but not so apprehensive of their welfare, for they were powerful animals and well versed in jungle strategy. Once Suma had essayed to try her prowess on one of the big ungulates by springing from a lower branch and burying her claws and fangs in its shoulder. But the hide was so tough, particularly along the ridge that ran down from the neck that she gained little more than a secure hold and this the tapir broke by promptly bolting through the densest brush where the stout overhanging branches brushed the Jaguar off as if she had been a fly and left her lying bruised and stunned on the soggy ground. Herds of peccaries roamed the forest islands at will. Their safety lay principally in numbers, but more of them anon.

Keeping just ahead of the encroaching water that daily added broad miles to the inundated areas, Suma was finally driven to the heavy forest that spread its mantle over the rough, low ridges forming the Andean foothills. And the long journey finally over the great cat felt a thrill of delight at again seeing the old, familiar haunts in the rain-drenched thickets.

With a caution akin to awe she approached the windfall where a cyclone years before had levelled a wide swath through the heavy growth. Giant trunks and branches, resisting decay, littered the floor of the lane and formed a barrier impenetrable to those inhabitants of the jungle confined to a life on the ground. Second growth sprouts had pushed their way through the tangled, twisted debris and waved their plumed heads above the mass of wreckage. Creepers and trumpet vines covered it with a green cloak so that an endless mound of verdure dotted with clusters of scarlet flowers greeted the eye in two directions. Gorgeous humming birds, aflame with ruby and emerald light, flitted from one patch of color to another, sipping the nectar from deep-throated corollas and picking out the ants and other minute insects that too had been attracted by the delicacies stored in the brilliant blossoms.

Suma knew the country well. Thrice before had she taken up her abode there while the rains were falling. And now, springing nimbly from one prostrate tree-trunk to another, threading her way through verdure-covered tunnels, and pushing aside the sprouts that impeded her progress she made her way to the old lair—a great cavity in the heart of an uprooted cottonwood.

At the entrance she stopped short and sniffed the air enquiringly. Her nose told her that the spiny rats had been there, probably that very night, but they were beneath her serious attention and now that she had arrived they would lose no time in seeking other quarters; so she dismissed them from her mind without another thought. A stronger and more disagreeable odor proclaimed the presence of an opossum; in fact, its beady eyes could be seen dully glowing in the farthermost corner of the cavity. How dared the impudent creature appropriate for its own use and defile the place that Suma held sacred? Ordinarily she would pass it in contempt, but such impertinence must not remain unpunished. With a snarl of rage she dashed through the entrance and struck the wretched creature a terrible blow with one claw-armed paw that tore it into shreds and turning, with a second quick thrust tossed it out where it fell among the trumpet-vines, a limp and lifeless mass.

After a thorough inspection of her old quarters the Jaguar was apparently satisfied that they would serve their purpose another season, and set about renovating them. This consisted of carefully digging up and turning over the decayed bark and leaves that had sifted in through the opening. Nor was this labor without its reward, for numbers of fat grubs and the helpless larvÆ of rhinoceros beetles were unearthed, providing dainty morsels for the big cat. This accomplished, Suma inquisitively sniffed at each nook and crevice, then turning around a number of times in search of the most comfortable spot, settled down for a long nap—her nostrils toward the entrance beyond which the rain roared and the thunder crashed. The air was fragrant with the smell of growing things for the rainy season was not yet far enough advanced to induce decomposition of the wilted and dead vegetation; and Suma, glad to be back in her home again, speedily sank into a peaceful and refreshing sleep.

From the cautious hunter moving shadow-like over the dreary expanse of the pantenales or stealing like a spirit through the forest islands and killing for food only, Suma suddenly changed to a bloodthirsty terror that slew whatever came within her reach. Back and forth she patrolled along the edges of the windfall. No creature was too small, none too large to merit the fury of her onslaught.

Numbers of the more careless or stupid animals, panic-stricken at last when it was too late, fell ready victims. Instead of seeking safety at the first menacing roar they foolishly succumbed to their curiosity or stopped only long enough to listen and to wonder, then went about their own affairs as was their custom. This seldom failed to bring dire consequences, for when the sudden rush came it confused them and they dashed blindly into the very jaws of their destroyer. Such particularly was the fate of the agoutis, which had either forgotten the experience of past seasons or had failed to inherit the cunning of the other wild folk. When the Jaguar approached, noisily announcing her coming with voice and footfall, they sat stock still and waited. Only their noses twitched and their large, black eyes stared dumbly in the direction from whence the sounds came. They never had long to wait. With a growl, Suma pounced upon them, mauled them into bits and left them as a warning the meaning of which could not be misunderstood.

The lot of the armadillos was not vastly different. Digging for grubs in the wet mould, they were oblivious to their surroundings for with their heads hidden from view they felt a fanciful security from outward aggression. The rings of bony armor that covered their bodies was strong enough, it is true, to protect them from the talons of the harpy eagle and claws of the tiger cats; but when Suma dealt her crushing blow it proved at once the fallacy of taking too many things for granted. So the shattered casques and broken bones of many a luckless armadillo were strewn along the way, mute evidences of Suma’s insatiable savagery.

In contrast to the actions of the agoutis and armadillos was the behavior of the ocelots. At the first intimation of danger they disappeared to their hiding places or climbed the nearest tree from the branches of which they watched with the eyes of hatred as their larger relative passed below. However, in the event that they were trapped in the middle of a stalk they spat and hissed and offered the strongest resistance of which they were capable, or at least so it seemed. In reality they were merely bluffing, knowing all the while, with sinking hearts, that their position was hopeless, and that their strategy had no effect whatever on the actions of their persecutor.

The more knowing animals heeded the warning so plainly written in the mutilated bodies of their brethren; in the snarls of rage and in the screams of terror of the doomed victims; and in the roars of triumph that followed each notable kill. To them, all these signs were superfluous, for had they not witnessed the coming of Siluk, the Storm-God, and had they not known of the thing that portended? But such is the nature of the wild things that they are loath to change the established order of their lives until forced to do so. So, not until death walked boldly in their midst, and struck—no one could tell when and where—did they profit by their superior intelligence. Then the more timid ones among their number moved to safe quarters far from the windfall, while the others redoubled their vigilance and dared not venture many paces from the protection of their burrows and shelters.

So far, the inhabitants of the treetops had not been molested. Largest among them were the howling monkeys. Secretly, they feared Suma and hated her with all the vehemence of their intractable natures. In secret also, they followed her movements whenever possible, dogging her steps and gazing with furtive eyes upon her acts of violence. But they were careful to keep to the higher branches and to view the jungle tragedies from the safety of their lofty perches. So long as the Jaguar hunted openly and made no efforts to conceal her movements, they had nothing to fear. It was later, when the great cat called into play all the resources and artifices at her command that their hour would strike. But like the other foolish wild folk, they looked upon that time as something belonging to the indistinct future and not until the lesson should be brought home to them, swiftly and terribly, would they profit by it.

In her turn, Suma hated the monkey tribe. She had frequent glimpses of the dark forms slinking through the branches high above her head, but gave no indication of the fact. At the present time she could not hope successfully to wage war upon them in their arboreal fastness. But it would not always be so. Other days were coming and then the monkey band would be given their lesson and punished for their presumption.

The bird flocks swept through the forest in quest of their livelihood with as much clamor as ever. To them Suma meant nothing; the majority of them had never seen her—did not even know that such a creature existed. The jays, quarrelsome and noisy as are their relatives of the temperate zone, occasionally saw the spotted hunter as she passed where the undergrowth was more open, and sent up a loud chatter that apprised all the other wild things of her whereabouts. And while realizing her impotence to deal with them, Suma could never quite check the growl that swelled in her throat nor stay the lips that drew back until the gleaming, white fangs were exposed to view. Then, with a sheepish look as if heartily ashamed of having noticed the pests at all, she hastened to thicker cover and quickly lost herself to her tormentors.

And so the days, and the nights too, passed swiftly, each with its complement of thunder and of rain, and of intimidation and destruction; but at last Suma was satisfied. The region had been cleared of everything that might disturb the tranquillity of the weeks to come. That had been her first care, her first duty prompted by an instinct that made her merciless in its execution. Her abode was safe from disturbance. She could come and go as she chose, serene in the knowledge that not a living thing remained in the vicinity to trouble her, or, if any remained they were cowed to the point where they dared not make their presence known. Then she retired to the cavity in the great cottonwood and for three days and three nights the jungle saw her not.

The deluge thundered and beat upon the drooping vegetation with a sound so monotonous that Suma grew accustomed to it and did not notice its existence. But the chamber in the giant tree trunk remained dry and comfortable, a little world apart from its mournful surroundings. And scarcely had she entered upon her voluntary retirement when a swarm of craneflies took up its station at the entrance. These latter were slender, almost wasplike insects with lacy wings and long, thread-like legs, that whirled and danced with the mad joyousness of life, the mass of swirling creatures seemingly spinning a net of sheerest gossamer that curtained the interior from the prying eyes of the wrens and ant birds hopping inquisitively through the crevices of the windfall.