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What crime of ancestors are they expiating? In some forgotten caterpillardom was an act committed, so terrible that it can never be known, except through the working out of the karma upon millions of b.u.t.terflies? Or does there linger in the innumerable little ganglion minds a memory of long-lost Atlantis, so compelling to masculine Catopsilias that the supreme effort of their lives is an attempt to envisage it? "Absurd fancies, all," says our conscious entomological sense, and we agree and sweep them aside. And then quite as readily, more reasonable scientific theories fall asunder, and we are left at last alone with the b.u.t.terflies, a vast ignorance, and a great unfulfilled desire to know what it all means.
On this October day the migration of the year had ceased. To my coa.r.s.e senses the sunlight was of equal intensity, the breeze unchanged, the whole aspect the same--and yet something as intangible as thought, as impelling as gravitation, had ceased to operate. The tension once slackened, the b.u.t.terflies took up their more usual lives. But what could I know of the meaning of "normal" in the life of a b.u.t.terfly--I who boasted a miserable single pair of eyes and no greater number of legs, whose shoulders supported only shoulder blades, and whose youth was barren of caterpillarian memories!
As I have said, migration was at an end, yet here I had stumbled upon a Bay of b.u.t.terflies. No matter whether one's interest in life lay chiefly with ornithology, teetotalism, arrowheads, politics, botany, or finance, in this bay one's thoughts would be sure to be concentrated on b.u.t.terflies. And no less interesting than the b.u.t.terflies were their immediate surroundings. The day before, I had sat close by on a low boulder at the head of the tiny bay, with not a b.u.t.terfly in sight. It occurred to me that my ancestor, Eryops, would have been perfectly at home, for in front of me were clumps of strange, carboniferous rushes, lacking leaves and grace, and sedges such as might be fashioned in an attempt to make plants out of green straw. Here and there an ancient jointed stem was in blossom, a pinnacle of white filaments, and hour after hour there came little brown trigonid visitors, sting-less bees, whose nests were veritable museums of flower extracts--tubs of honey, hampers of pollen, barrels of ambrosia, h.o.a.rded in castles of wax. Scirpus-sedge or orchid, all was the same to them.
All odor evaded me until I had recourse to my usual olfactory crutch, placing the flower in a vial in the sunlight. Delicate indeed was the fragrance which did not yield itself to a few minutes of this distillation. As I removed the cork there gently arose the scent of thyme, and of rose petals long pressed between the leaves of old, old books--a scent memorable of days ancient to us, which in past lives of sedges would count but a moment. In an instant it pa.s.sed, drowned in the following smell of bruised stem. But I had surprised the odor of this age-old growth, as evanescent as the faint sound of the breeze sifting through the cl.u.s.ter of leafless stalks. I felt certain that Eryops, although living among horserushes and ancient sedges, never smelled or listened to them, and a glow of satisfaction came over me at the thought that perhaps I represented an advance on this funny old forebear of mine; but then I thought of the little bees, drawn from afar by the scent, and I returned to my usual sense of human futility, which is always dominant in the presence of insect activities.
I leaned back, crowding into a crevice of rock, and strove to realize more deeply the kinship of these fine earth neighbors. Bone of my bone indeed they were, but their quiet dignity, their calmness in storm and sun, their poise, their disregard of all small, petty things, whether of mechanics, whether chemical or emotional--these were attributes to which I could only aspire, being the prerogatives of superiors.
These rocks, in particular, seemed of the very essence of earth. Three elements fought over them. The sand and soil from which they lifted their splendid heads sifted down, or was washed up, in vain effort to cover them. More subtly dead tree trunks fell upon them, returned to earth, and strove to encloak them. For six hours at a time the water claimed them, enveloping them slowly in a mantle of quicksilver, or surging over with rough waves. Algal spores took hold, desmids and diatoms swam in and settled down, little fish wandered in and out of the crevices, while large ones nosed at the entrances.
Then Mother Earth turned slowly onward; the moon, reaching down, beckoned with invisible fingers, and the air again entered this no man's land. Breezes whispered where a few moments before ripples had lapped; with the sun as ally, the last remaining pool vanished and there began the hours of aerial dominion. The most envied character of our lesser brethren is their faith. No matter how many hundreds of thousands of tides had ebbed and flowed, yet to-day every pinch of life which was blown or walked or fell or flew to the rocks during their brief respite from the waves, accepted the good dry surface without question.
Seeds and berries fell, and rolled into hollows rich in mulcted earth; parachutes, buoyed on thistle silk, sailed from distant jungle plants; every swirl of breeze brought spores of lichens and moss, and even the retreating water unwittingly aided, having transported hither and dropped a cargo of living things, from tiniest plant to seeds of mightiest mora. Though in the few allotted hours these might not sprout, but only quicken in their heart, yet blue-winged wasps made their faith more manifest, and worked with feverish haste to gather pellets of clay and fashion cells. I once saw even the beginning of storage--a green spider, which an hour later was swallowed by a pa.s.sing fish instead of nourishing an infant wasp.
Spiders raised their meshes where shrimps had skipped, and flies hummed and were caught by singing jungle vireos, where armored catfish had pa.s.sed an hour or two before.
So the elements struggled and the creatures of each strove to fulfil their destiny, and for a little time the rocks and I wondered at it together.
In this little arena, floored with sand, dotted with rushes and balconied with boulders, many hundreds of b.u.t.terflies were gathered.
There were five species, all of the genius _Catopsilia_, but only three were easily distinguishable in life, the smaller, lemon yellow _statira_, and the larger, orange _argente_ and _philea_. There was also _eubele_, the migrant, keeping rather to itself.
I took some pictures, then crept closer; more pictures and a nearer approach. Then suddenly all rose, and I felt as if I had shattered a wonderful painting. But the sand was a lodestone and drew them down. I slipped within a yard, squatted, and mentally became one of them.
Silently, by dozens and scores, they flew around me, and soon they eclipsed the sand. They were so closely packed that their outstretched legs touched. There were two large patches, and a smaller area outlined by no boundary that I could detect. Yet when these were occupied the last comers alighted on top of the wings of their comrades, who resented neither the disturbance nor the weight. Two layers of b.u.t.terflies crammed into small areas of sand in the midst of more sand, bounded by walls of empty air--this was a strange thing.
A little later, when I enthusiastically reported it to a professional lepidopterist he brushed it aside. "A common occurrence the world over, Rhopalocera gathered in damp places to drink." I, too, had observed apparently similar phenomena along icy streams in Sikkim, and around muddy buffalo-wallows in steaming Malay jungles. And I can recall many years ago, leaning far out of a New England buggy to watch clouds of little sulphurs flutter up from puddles beneath the creaking wheels.
The very fact that b.u.t.terflies chose to drink in company is of intense interest, and to be envied as well by us humans who are temporarily denied that privilege. But in the Bay of b.u.t.terflies they were not drinking, nor during the several days when I watched them. One of the chosen patches of sand was close to the tide when I first saw them, and damp enough to appease the thirst of any b.u.t.terfly. The other two were upon sand, parched by hours of direct tropical sun, and here the two layers were ma.s.sed.
The insects alighted, facing in any direction, but veered at once, heading upbreeze. Along the riverside of markets of tropical cities I have seen fleets of fishing boats crowded close together, their gay sails drying, while great ebony Neptunes brought ash.o.r.e baskets of angel fish. This came to mind as I watched my flotillas of b.u.t.terflies.
I leaned forward until my face was hardly a foot from the outliers, and these I learned to know as individuals. One sulphur had lost a bit of hind wing, and three times he flew away and returned to the same spot. Like most cripples, he was unamiable, and resented a close approach, pushing at the trespa.s.ser with a foreleg in a most unb.u.t.terfly-like way. Although I watched closely, I did not see a single tongue uncoiled for drinking. Only when a dense group became uneasy and pushed one another about were the tongue springs slightly loosened. Even the nervous antennae were quiet after the insects had settled. They seemed to have achieved a Rhopaloceran Nirvana, content to rest motionless until caught up in the temporary whirlwinds of restlessness which now and then possessed them.
They came from all directions, swirling over the rocks, twisting through nearby brambles, and settling without a moment's hesitation.
It was as though they had all been here many times before, a rendezvous which brooked not an instant's delay. From time to time some ma.s.s spirit troubled them, and, as one b.u.t.terfly, the whole company took to wing. Close as they were when resting, they fairly buffeted one another in mid-air. Their wings, striking one another and my camera and face, made a strange little rustling, crisp and crackling whispers of sounds. As if a pile of Northern autumn leaves, fallen to earth, suddenly remembered days of greenness and humming bees, and strove to raise themselves again to the bare branches overhead.
Down came the b.u.t.terflies again, brushing against my clothes and eyes and hands. All that I captured later were males, and most were fresh and newly emerged, with a scattering of dimmed wings, frayed at edges, who flew more slowly, with less vigor. Finally the lower patch was washed out by the rising tide, but not until the water actually reached them did the insects leave. I could trace with accuracy the exact reach of the last ripple to roll over the flat sand by the contour of the remaining outermost rank of insects.
On and on came the water, and soon I was forced to move, and the hundreds of b.u.t.terflies in front of me. When the last one had left I went away, returning two hours later. It was then that I witnessed the most significant happening in the Bay of b.u.t.terflies--one which shook to the bottom the theory of my lepidopterist friend, together with my thoughtless use of the word normal. Over two feet of restless brown water covered the sand patches and rocked the scouring rushes. A few feet farther up the little bay the remaining sand was still exposed.
Here were damp sand, sand dotted with rushes, and sand dry and white in the sun. About a hundred b.u.t.terflies were in sight, some continually leaving, and others arriving. Individuals still dashed into sight and swooped downward. But not one attempted to alight on the exposed sand. There was fine, dry sand, warm to a b.u.t.terfly's feet, or wet sand soaked with draughts of good Mazaruni water. But they pa.s.sed this unheeding, and circled and fluttered in two swarms, as low as they dared, close to the surface of the water, exactly over the two patches of sand which had so drawn and held them or their brethren two hours before. Whatever the ultimate satisfaction may have been, the attraction was something transcending humidity, aridity, or immediate possibility of attainment. It was a definite cosmic point, a geographical focus, which, to my eyes and understanding, was unreasonable, unsuitable, and inexplicable.
As I watched the restless water and the b.u.t.terflies striving to find a way down through it to the only desired patches of sand in the world, there arose a fine, thin humming, seeping up through the very waves, and I knew the singing catfish were following the tide sh.o.r.eward. And as I considered my vast ignorance of what it all meant, of how little I could ever convey of the significance of the happenings in the Bay of b.u.t.terflies, I felt that it would have been far better for all of my green ink to have trickled down through the grains of sand.
XII
SEQUELS
Tropical midges of sorts live less than a day--sequoias have felt their sap quicken at the warmth of fifteen hundred springs. Somewhere between these extremes, we open our eyes, look about us for a time and close them again. Modern political geography and shifts of government give us Methusalistic feelings--but a glance at rocks or stars sends us shuddering among the other motes which glisten for a moment in the sunlight and then vanish.
We who strive for a little insight into evolution and the meaning of things as they are, forever long for a glimpse of things as they were.
Here at my laboratory I wonder what the land was like before the dense mat of vegetation came to cover every rock and grain of sand, or how the rivers looked when first their waters trickled to the sea.
All our stories are of the middles of things,--without beginning or end; we scientists are plunged suddenly upon a cosmos in the full uproar of eons of precedent, unable to look ahead, while to look backward we must look down.
Exactly a year ago I spent two hours in a clearing in the jungle back of Kartabo laboratory, and let my eyes and ears have full swing.[2]
Now in August of the succeeding year I came again to this clearing, and found it no more a clearing. Indeed so changed was it, that for weeks I had pa.s.sed close by without a thought of the jungle meadow of the previous year, and now, what finally turned me aside from my usual trail, was a sound. Twelve months ago I wrote, "From the monotone of under-world sounds a strange little rasping detached itself, a reiterated, subdued sc.r.a.ping or picking. It carried my mind instantly to the throbbing theme of the Niebelungs, onomatopoetic of the little hammers forever busy in their underground work. I circled a small bush at my side, and found that the sound came from one of the branches near the top; so with my gla.s.ses I began a systematic search." This was as far as I ever got, for a flock of parrakeets exploded close at hand and blew the lesser sound out of mind. If I had stopped to guess I would probably have considered the author a longicorn beetle or some fiddling orthopter.
[Footnote 2: See page 34.]
Now, a year later, I suddenly stopped twenty yards away, for at the end of the silvery cadence of a woodhewer, I heard the low, measured, toneless rhythm which instantly revived to mind every detail of the clearing. I was headed toward a distant palm frond beneath whose tip was a nest of Rufous Hermits, for I wished to see the two atoms of hummingbirds at the moment when they rolled from their _pet.i.t pois_ egg-sh.e.l.ls. I gave this up for the day and turned up the hill, where fifty feet away was the stump and bush near which I had sat and watched. Three times I went past the place before I could be certain, and even at the last I identified it only by the relative position of the giant tauroneero tree, in which I had shot many cotingas. The stump was there, a bit lower and more worn at the crevices, leaking sawdust like an overloved doll--but the low shrub had become a tall sapling, the weeds--vervain, boneset, velvet-leaf--all had been topped and killed off by dense-foliaged bushes and shrubs, which a year before had not raised a leaf above the meadow level. The old vistas were gone, the landscape had closed in, the wilderness was shutting down. Nature herself was "letting in the jungle." I felt like Rip Van Winkle, or even more alien, as if the pa.s.sing of time had been accelerated and my longed-for leap had been accomplished, beyond the usual ken of mankind's earthly lease of senses.
All these astounding changes had come to pa.s.s through the heat and moisture of a tropical year, and under deliberate scientific calculation there was nothing unusual in the alteration. I remembered the remarkable growth of one of the laboratory bamboo shoots during the rainy season--twelve and a half feet in sixteen days, but that was a single stem like a blade of gra.s.s, whereas here the whole landscape was altered--new birds, new insects, branches, foliage, flowers, where twelve short months past, was open sky above low weeds.
In the hollow root on the beach, my band of crane-flies had danced for a thousand hours, but here was a sound which had apparently never ceased for more than a year--perhaps five thousand hours of daylight.
It was a low, penetrating, abruptly reiterated beat, occurring about once every second and a half, and distinctly audible a hundred feet away. The "low bush" from which it proceeded last year, was now a respectable sapling, and the source far out of reach overhead. I discovered a roundish ma.s.s among the leaves, and the first stroke of the ax sent the rhythm up to once a second, but did not alter the timbre. A few blows and the small trunk gave way and I fled for my life. But there was no angry buzzing and I came close. After a cessation of ten or fifteen seconds the sound began again, weaker but steady. The foliage was alive with small Azteca ants, but these were tenants of several small nests near by, and at the catastrophe overran everything.
The largest structure was the smooth carton nest of a wasp, a beautiful species, pale yellowish-red with wine-colored wings. Only once did an individual make an attempt to sting and even when my head was within six inches, the wasps rested quietly on the broken combs.
By careful watching, I observed that many of the insects jerked the abdomen sharply downward, b.u.t.ting the comb or sh.e.l.l of smooth paper a forceful blow, and producing a very distinct noise. I could not at first see the ma.s.s of wasps which were giving forth the major rhythm, as they were hidden deep in the nest, but the fifty-odd wasps in sight kept perfect time, or occasionally an individual skipped one or two beats, coming in regularly on every alternate or every third beat.
Where they were two or three deep, the uppermost wasps struck the insects below them with their abdomens in perfect rhythm with the nest beat. For half an hour the sound continued, then died down and was not heard again. The wasps dispersed during the night and the nest was deserted.
It reminded me of the telegraphing ants which I have often heard in Borneo, a remarkable sweeping roll, caused by the host of insects striking the leaves with their heads, and produced only when they are disturbed. It appeared to be of the nature of a warning signal, giving me opportunity to back away from the stinging legions which filled the thicket against which I pushed.
The rhythm of these wasps was very different. They were peaceable, not even resenting the devastation of their home, but always and always must the inexplicable beat, beat, beat, be kept up, serving some purpose quite hidden from me. During succeeding months I found two more nests, with similar fetish of sound vibrations, which led to their discovery. From one small nest, which fairly shook with the strength of their beats, I extracted a single wasp and placed him in a gla.s.s-topped, metal box. For three minutes he kept up the rhythmic beat. Then I began a more rapid tattoo on the bottom of the box, and the changed tempo confused him, so that he stopped at once, and would not tap again.
A few little Mazaruni daisies survived here and there, blossoming bravely, trying to believe that the shade was lessening, and not daily becoming more dense. But their leaves were losing heart, and paling in the scant light. Another six months and dead leaves and moss would have obliterated them, and the zone of brilliant flowers and gorgeous b.u.t.terflies and birds would shift many feet into the air, with the tops of the trees as a new level.
As long as I remained by my stump my visitors were of the jungle. A yellow-bellied trogon came quite close, and sat as trogons do, very straight and stiff like a poorly mounted bird, watching pa.s.sing flycatchers and me and the glimpses of sky. At first he rolled his little cuckoo-like notes, and his brown mate swooped up, saw me, shifted a few feet farther off and perched full of curiosity, craning her neck and looking first with one eye, then the other. Now the male began a content song. With all possible variations of his few and simple tones, on a low and very sweet timbre, he belied his unoscine perch in the tree of bird life, and sang to himself. Now and then he was drowned out by the shrilling of cicadas, but it was a delightful serenade, and he seemed to enjoy it as much as I did. A few days before, I had made a careful study of the syrinx of this bird, whom we may call rather euphoniously _Trogonurus curucui_, and had been struck by the simplicity both of muscles and bones. Now, having summoned his mate in regular accents, there followed this unexpected whisper song.
It recalled similar melodies sung by pheasants and Himalayan partridges, usually after they had gone to roost.
Once the female swooped after an insect, and in the midst of one of the sweetest pa.s.sages of the male trogon, a green gra.s.shopper shifted his position. He was only two inches away from the singer, and all this time had been hidden by his chlorophyll-hued veil. And now the trogon fairly fell off the branch, seizing the insect almost before the tone died away. Swallowing it with considerable difficulty, the harmony was taken up again, a bit throaty for a few notes. Then the pair talked together in the usual trogon fashion, and the sudden shadow of a pa.s.sing vulture, drew forth discordant cat calls, as both birds swooped from sight to avoid the fancied hawk.
A few minutes later the vocal seal of the jungle was uttered by a quadrille bird. When the notes of this wren are heard, I can never imagine open, blazing sunshine, or un.o.bstructed blue sky. Like the call of the wood pewee, the wren's radiates coolness and shadowy quiet. No matter how tropic or breathless the jungle, when the flute-like notes arise they bring a feeling of freshness, they arouse a mental breeze, which cools one's thoughts, and, although there may be no water for miles, yet we can fairly hear the drip of cool drops falling from thick moss to pools below. First an octave of two notes of purest silver, then a varying strain of eight or ten notes, so sweet and powerful, so individual and meaningful that it might stand for some wonderful motif in a great opera. I shut my eyes, and I was deaf to all other sounds while the wren sang. And as it dwelt on the last note of its phrase, a cicada took it up on the exact tone, and blended the two final notes into a slow vibration, beginning gently and rising with the crescendo of which only an insect, and especially a cicada, is master. Here was the eternal, hypnotic tom-tom rhythm of the East, grafted upon supreme Western opera. For a time my changed clearing became merely a sounding box for the most thrilling of jungle songs. I called the wren as well as I could, and he came nearer and nearer. The music rang out only a few yards away. Then he became suspicious, and after that each phrase was prefaced by typical wren scolding. He could not help but voice his emotions, and the harsh notes told plainly what he thought of my poor imitation. Then another feeling would dominate, and out of the maelstrom of harshness, of tumbled, volcanic vocalization would rise the pure silver stream of single notes.
The wren slipped away through the ma.s.ses of fragrant Davilla blossoms, but his songs remained and are with me to this moment. And now I leaned back, lost my balance, and grasping the old stump for support, loosened a big piece of soft, mealy wood. In the hollow beneath, I saw a rainbow in the heart of the dead tree.
This rainbow was caused by a bug, and when we stop to think of it, this shows how little there is in a name. For when we say bug, or for that matter bogy or bugbear, we are garbling the sound which our very, very forefathers uttered when they saw a specter or hobgoblin. They said it _bugge_ or even _bwg_, but then they were more afraid of specters in those days than we, who imprison will-o'-the-wisps in Very lights, and rub fox-fire on our watch faces. At any rate here was a bug who seemed to ill-deserve his name, although if the Niblelungs could fashion the Rheingold, why could not a bug conceive a rainbow?
Whenever a human, and especially a house-human thinks of bugs, she thinks unpleasantly and in superlatives. And it chances that evolution, or natural selection, or life's mechanism, or fate or a creator, has wrought them into form and function also in superlatives.
Cicadas are supreme in longevity and noise. One of our northern species sucks in silent darkness for seventeen years, and then, for a single summer, breaks all American long-distance records for insect voices. To another group, known as Fulgorids, gigantic heads and streamers of wax have been allotted. Those possessing the former rejoice in the name of Lantern Flies, but they are at present unfaithful vestal bugs, though it is extremely doubtful if their wicks were ever trimmed or lighted. To see a big wax bug flying with trailing ribbons slowly from tree to tree in the jungle is to recall the streaming trains of a flock of peac.o.c.ks on the wing.
The membracids must of all deserve the name of "bugges" for no elf or hobgoblin was ever more bizarre. Their legs and heads and bodies are small and aphid-like, but aloft there spring minarets and handles and towers and thorns and groups of hairy b.a.l.l.s, out of all reason and sense. Only Stegosaurus and Triceratops bear comparison. Another group of five-sided bugs are the skunks and civet-cats among insects, guarding themselves from danger by an aura of obnoxious scent.
Not the least strange of this a.s.semblage is the author of our rainbow in the stump. My awkwardness had broken into a hollow which opened to the light on the other side of the rotten bole. A vine had tendriled its way into the crevice where the little weaver of rainbows had found board and lodging. We may call him toad-hopper or spittle-bug, or as Fabre says, "_Contentons-nous de Cicadelle, qui respecte le tympan._" Like all of its kindred, the Bubble Bug finds Nirvana in a sappy green stem. It has neither strong flight, nor sticky wax, th.o.r.n.y armature nor gas barrage, so it proceeds to fashion an armor of bubbles, a cuira.s.s of liquid film. This, in brief, was the rainbow which caught my eye when I broke open the stump. Up to that moment no rainbow had existed, only a little light sifting through from the vine-clad side. But now a ray of sun shattered itself on the pile of bubbles, and sprayed itself out into a curved glory.
Bubble Bugs blow their froth only when immature, and their bodies are a distillery or home-brew of sorts. No matter what the color, or viscosity or chemical properties of sap, regardless of whether it flows in liana, shrub, or vine, yet the Bug's artesian product is clear, tasteless and wholly without the possibility of being blown into bubbles. When a large drop has collected, the tip of the abdomen encloses a retort of air, inserts this in the drop and forces it out.