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首页 » 英文短篇小说 » The Evolutionist at Large » XV. BUTTERFLY PSYCHOLOGY.
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XV. BUTTERFLY PSYCHOLOGY.
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A small red-and-black butterfly poises1 statuesque above the purple blossom of this tall field-thistle. With its long sucker it probes industriously2 floret after floret of the crowded head, and extracts from each its wee drop of buried nectar. As it stands just at present, the dull outer sides of its four wings are alone displayed, so that it does not form a conspicuous3 mark for passing birds; but when it has drunk up the last drop of honey from the thistle flower, and flits joyously5 away to seek another purple mass of the same sort, it will open its red-spotted vans in the sunlight, and will then show itself off as one among the prettiest of our native insects. Each thistle-head consists of some two hundred separate little bell-shaped blossoms, crowded together for the sake of conspicuousness6 into a single group, just as the blossoms of the lilac or the syringa are crowded into larger though less dense7 clusters; and, as each separate floret has a nectary of its own, the bee or butterfly who lights upon the compound flower-group can busy himself for a minute or two in getting at the various drops of honey without the necessity for any further change of position than that of revolving8 upon his own axis9. Hence these composite flowers are great favourites with all insects whose suckers are long enough to reach the bottom of their slender tubes.

The butterfly's view of life is doubtless on the whole a cheerful one. Yet his existence must be something so nearly mechanical that we probably overrate the amount of enjoyment10 which he derives11 from flitting about so airily among the flowers, and passing his days in the unbroken amusement of sucking liquid honey. Subjectively12 viewed, the butterfly is not a high order of insect; his nervous system does not show that provision for comparatively spontaneous thought and action which we find in the more intelligent orders, like the flies, bees, ants, and wasps13. His nerves are all frittered away in little separate ganglia distributed among the various segments of his body, instead of being governed by a single great central organ, or brain, whose business it always is to correlate and co-ordinate complex external impressions. This shows that the butterfly's movements are almost all automatic, or simply dependent upon immediate14 external stimulants15: he has not even that small capacity for deliberation and spontaneous initiative which belongs to his relation the bee. The freedom of the will is nothing to him, or extends at best to the amount claimed on behalf of Buridan's ass4: he can just choose which of two equidistant flowers shall first have the benefit of his attention, and nothing else. Whatever view we take on the abstract metaphysical question, it is at least certain that the higher animals can do much more than this. Their brain is able to correlate a vast number of external impressions, and to bring them under the influence of endless ideas or experiences, so as finally to evolve conduct which differs very widely with different circumstances and different characters. Even though it be true, as determinists believe (and I reckon myself among them), that such conduct is the necessary result of a given character and given circumstances—or, if you will, of a particular set of nervous structures and a particular set of external stimuli16—yet we all know that it is capable of varying so indefinitely, owing to the complexity17 of the structures, as to be practically incalculable. But it is not so with the butterfly. His whole life is cut out for him beforehand; his nervous connections are so simple, and correspond so directly with external stimuli, that we can almost predict with certainty what line of action he will pursue under any given circumstances. He is, as it were, but a piece of half-conscious mechanism18, answering immediately to impulses from without, just as the thermometer answers to variations of temperature, and as the telegraphic indicator19 answers to each making and breaking of the electric current.

In early life the future butterfly emerges from the egg as a caterpillar20. At once his many legs begin to move, and the caterpillar moves forward by their motion. But the mechanism which set them moving was the nervous system, with its ganglia working the separate legs of each segment. This movement is probably quite as automatic as the act of sucking in the new-born infant. The caterpillar walks, it knows not why, but simply because it has to walk. When it reaches a fit place for feeding, which differs according to the nature of the particular larva, it feeds automatically. Certain special external stimulants of sight, smell, or touch set up the appropriate actions in the mandibles, just as contact of the lips with an external body sets up sucking in the infant. All these movements depend upon what we call instinct—that is to say, organic habits registered in the nervous system of the race. They have arisen by natural selection alone, because those insects which duly performed them survived, and those which did not duly perform them died out. After a considerable span of life spent in feeding and walking about in search of more food, the caterpillar one day found itself compelled by an inner monitor to alter its habits. Why, it knew not; but, just as a tired child sinks to sleep, the gorged21 and full-fed caterpillar sank peacefully into a dormant22 state. Then its tissues melted one by one into a kind of organic pap, and its outer skin hardened into a chrysalis. Within that solid case new limbs and organs began to grow by hereditary23 impulses. At the same time the form of the nervous system altered, to suit the higher and freer life for which the insect was unconsciously preparing itself. Fewer and smaller ganglia now appeared in the tail segments (since no legs would any longer be needed there), while more important ones sprang up to govern the motions of the four wings. But it was in the head that the greatest changes took place. There, a rudimentary brain made its appearance, with large optic centres, answering to the far more perfect and important eyes of the future butterfly. For the flying insect will have to steer24 its way through open space, instead of creeping over leaves and stones; and it will have to suck the honey of flowers, as well as to choose its fitting mate, all of which demands from it higher and keener senses than those of the purblind25 caterpillar. At length one day the chrysalis bursts asunder26, and the insect emerges to view on a summer morning as a full-fledged and beautiful butterfly.

For a minute or two it stands and waits till the air it breathes has filled out its wings, and till the warmth and sunlight have given it strength. For the wings are by origin a part of the breathing apparatus27, and they require to be plimmed by the air before the insect can take to flight. Then, as it grows more accustomed to its new life, the hereditary impulse causes it to spread its vans abroad, and it flies. Soon a flower catches its eye, and the bright mass of colour attracts it irresistibly28, as the candle-light attracts the eye of a child a few weeks old. It sets off towards the patch of red or yellow, probably not knowing beforehand that this is the visible symbol of food for it, but merely guided by the blind habit of its race, imprinted30 with binding31 force in the very constitution of its body. Thus the moths32, which fly by night and visit only white flowers whose corollas still shine out in the twilight34, are so irresistibly led on by the external stimulus35 of light from a candle falling upon their eyes that they cannot choose but move their wings rapidly in that direction; and though singed36 and blinded twice or three times by the flame, must still wheel and eddy37 into it, till at last they perish in the scorching38 blaze. Their instincts, or, to put it more clearly, their simple nervous mechanism, though admirably adapted to their natural circumstances, cannot be equally adapted to such artificial objects as wax candles. The butterfly in like manner is attracted automatically by the colour of his proper flowers, and settling upon them, sucks up their honey instinctively39. But feeding is not now his only object in life: he has to find and pair with a suitable mate. That, indeed, is the great end of his winged existence. Here, again, his simple nervous system stands him in good stead. The picture of his kind is, as it were, imprinted on his little brain, and he knows his own mates the moment he sees them, just as intuitively as he knows the flowers upon which he must feed. Now we see the reason for the butterfly's large optic centres: they have to guide it in all its movements. In like manner, and by a like mechanism, the female butterfly or moth33 selects the right spot for laying her eggs, which of course depends entirely40 upon the nature of the young caterpillars41' proper food. Each great group of insects has its own habits in this respect, may-flies laying their eggs on the water, many beetles42 on wood, flies on decaying animal matter, and butterflies mostly on special plants. Thus throughout its whole life the butterfly's activity is entirely governed by a rigid43 law, registered and fixed44 for ever in the constitution of its ganglia and motor nerves. Certain definite objects outside it invariably produce certain definite movements on the insect's part. No doubt it is vaguely45 conscious of all that it does: no doubt it derives a faint pleasure from due exercise of all its vital functions, and a faint pain when they are injured or thwarted46; but on the whole its range of action is narrowed and bounded by its hereditary instincts and their nervous correlatives. It may light on one flower rather than another; it may choose a fresher and brighter mate rather than a battered47 and dingy48 one; but its little subjectivity49 is a mere29 shadow compared with ours, and it hardly deserves to be considered as more than a semi-conscious automatic machine.

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1 poises 9e65c9ead89401eb818d4a22d2a16585     
使平衡( poise的第三人称单数 ); 保持(某种姿势); 抓紧; 使稳定
参考例句:
  • Note the way he poises his head. 注意他使头部保持平衡的方式。
  • Chen Wei poises himself at the top of the platform. 陈伟在跳台顶端保持住平衡。
2 industriously f43430e7b5117654514f55499de4314a     
参考例句:
  • She paces the whole class in studying English industriously. 她在刻苦学习英语上给全班同学树立了榜样。
  • He industriously engages in unostentatious hard work. 他勤勤恳恳,埋头苦干。
3 conspicuous spszE     
adj.明眼的,惹人注目的;炫耀的,摆阔气的
参考例句:
  • It is conspicuous that smoking is harmful to health.很明显,抽烟对健康有害。
  • Its colouring makes it highly conspicuous.它的色彩使它非常惹人注目。
4 ass qvyzK     
n.驴;傻瓜,蠢笨的人
参考例句:
  • He is not an ass as they make him.他不象大家猜想的那样笨。
  • An ass endures his burden but not more than his burden.驴能负重但不能超过它能力所负担的。
5 joyously 1p4zu0     
ad.快乐地, 高兴地
参考例句:
  • She opened the door for me and threw herself in my arms, screaming joyously and demanding that we decorate the tree immediately. 她打开门,直扑我的怀抱,欣喜地喊叫着要马上装饰圣诞树。
  • They came running, crying out joyously in trilling girlish voices. 她们边跑边喊,那少女的颤音好不欢快。 来自名作英译部分
6 conspicuousness d51ada7e5f9238c4ec82414eab39976d     
显著,卓越,突出; 显著性
参考例句:
7 dense aONzX     
a.密集的,稠密的,浓密的;密度大的
参考例句:
  • The general ambushed his troops in the dense woods. 将军把部队埋伏在浓密的树林里。
  • The path was completely covered by the dense foliage. 小路被树叶厚厚地盖了一层。
8 revolving 3jbzvd     
adj.旋转的,轮转式的;循环的v.(使)旋转( revolve的现在分词 );细想
参考例句:
  • The theatre has a revolving stage. 剧院有一个旋转舞台。
  • The company became a revolving-door workplace. 这家公司成了工作的中转站。
9 axis sdXyz     
n.轴,轴线,中心线;坐标轴,基准线
参考例句:
  • The earth's axis is the line between the North and South Poles.地轴是南北极之间的线。
  • The axis of a circle is its diameter.圆的轴线是其直径。
10 enjoyment opaxV     
n.乐趣;享有;享用
参考例句:
  • Your company adds to the enjoyment of our visit. 有您的陪同,我们这次访问更加愉快了。
  • After each joke the old man cackled his enjoyment.每逢讲完一个笑话,这老人就呵呵笑着表示他的高兴。
11 derives c6c3177a6f731a3d743ccd3c53f3f460     
v.得到( derive的第三人称单数 );(从…中)得到获得;源于;(从…中)提取
参考例句:
  • English derives in the main from the common Germanic stock. 英语主要源于日耳曼语系。 来自《简明英汉词典》
  • He derives his income from freelance work. 他以自由职业获取收入。 来自《简明英汉词典》
12 subjectively 9ceb3293ef1b7663322bbb60c958e15f     
主观地; 臆
参考例句:
  • Subjectively, the demand of interest is the desire of human being. 荀子所说的对利的需要从主观上说就是人的欲望。
  • A sound also has an amplitude, a property subjectively heard as loudness. 声音有振幅,振幅的主观感觉是声音的大小。
13 wasps fb5b4ba79c574cee74f48a72a48c03ef     
黄蜂( wasp的名词复数 ); 胡蜂; 易动怒的人; 刻毒的人
参考例句:
  • There's a wasps' nest in that old tree. 那棵老树上有一个黄蜂巢。
  • We live in dread not only of unpleasant insects like spiders or wasps, but of quite harmless ones like moths. 我们不仅生活在对象蜘蛛或黄蜂这样的小虫的惧怕中,而且生活在对诸如飞蛾这样无害昆虫的惧怕中
14 immediate aapxh     
adj.立即的;直接的,最接近的;紧靠的
参考例句:
  • His immediate neighbours felt it their duty to call.他的近邻认为他们有责任去拜访。
  • We declared ourselves for the immediate convocation of the meeting.我们主张立即召开这个会议。
15 stimulants dbf97919d8c4d368bccf513bd2087c54     
n.兴奋剂( stimulant的名词复数 );含兴奋剂的饮料;刺激物;激励物
参考例句:
  • Coffee and tea are mild stimulants. 咖啡和茶是轻度兴奋剂。
  • At lower concentrations they may even be stimulants of cell division. 在浓度较低时,它们甚至能促进细胞分裂。 来自辞典例句
16 stimuli luBwM     
n.刺激(物)
参考例句:
  • It is necessary to curtail or alter normally coexisting stimuli.必需消除或改变正常时并存的刺激。
  • My sweat glands also respond to emotional stimuli.我的汗腺对情绪刺激也能产生反应。
17 complexity KO9z3     
n.复杂(性),复杂的事物
参考例句:
  • Only now did he understand the full complexity of the problem.直到现在他才明白这一问题的全部复杂性。
  • The complexity of the road map puzzled me.错综复杂的公路图把我搞糊涂了。
18 mechanism zCWxr     
n.机械装置;机构,结构
参考例句:
  • The bones and muscles are parts of the mechanism of the body.骨骼和肌肉是人体的组成部件。
  • The mechanism of the machine is very complicated.这台机器的结构是非常复杂的。
19 indicator i8NxM     
n.指标;指示物,指示者;指示器
参考例句:
  • Gold prices are often seen as an indicator of inflation.黃金价格常常被看作是通货膨胀的指标。
  • His left-hand indicator is flashing.他左手边的转向灯正在闪亮。
20 caterpillar ir5zf     
n.毛虫,蝴蝶的幼虫
参考例句:
  • A butterfly is produced by metamorphosis from a caterpillar.蝴蝶是由毛虫脱胎变成的。
  • A caterpillar must pass through the cocoon stage to become a butterfly.毛毛虫必须经过茧的阶段才能变成蝴蝶。
21 gorged ccb1b7836275026e67373c02e756e79c     
v.(用食物把自己)塞饱,填饱( gorge的过去式和过去分词 );作呕
参考例句:
  • He gorged himself at the party. 在宴会上他狼吞虎咽地把自己塞饱。 来自《简明英汉词典》
  • The men, gorged with food, had unbuttoned their vests. 那些男人,吃得直打饱嗝,解开了背心的钮扣。 来自辞典例句
22 dormant d8uyk     
adj.暂停活动的;休眠的;潜伏的
参考例句:
  • Many animals are in a dormant state during winter.在冬天许多动物都处于睡眠状态。
  • This dormant volcano suddenly fired up.这座休眠火山突然爆发了。
23 hereditary fQJzF     
adj.遗传的,遗传性的,可继承的,世袭的
参考例句:
  • The Queen of England is a hereditary ruler.英国女王是世袭的统治者。
  • In men,hair loss is hereditary.男性脱发属于遗传。
24 steer 5u5w3     
vt.驾驶,为…操舵;引导;vi.驾驶
参考例句:
  • If you push the car, I'll steer it.如果你来推车,我就来驾车。
  • It's no use trying to steer the boy into a course of action that suits you.想说服这孩子按你的方式行事是徒劳的。
25 purblind IS6xh     
adj.半盲的;愚笨的
参考例句:
  • If an administrator has no access to information,it's as if he was purblind and hard of hearing and had a stuffed nose.做管理工作的人没有信息,就是耳目不灵,鼻子不通。
  • Even his most purblind supporters knows this is nonsense.即使他最愚蠢的支持者也知道这是无稽之谈。
26 asunder GVkzU     
adj.分离的,化为碎片
参考例句:
  • The curtains had been drawn asunder.窗帘被拉向两边。
  • Your conscience,conviction,integrity,and loyalties were torn asunder.你的良心、信念、正直和忠诚都被扯得粉碎了。
27 apparatus ivTzx     
n.装置,器械;器具,设备
参考例句:
  • The school's audio apparatus includes films and records.学校的视听设备包括放映机和录音机。
  • They had a very refined apparatus.他们有一套非常精良的设备。
28 irresistibly 5946377e9ac116229107e1f27d141137     
adv.无法抵抗地,不能自持地;极为诱惑人地
参考例句:
  • Her gaze was drawn irresistibly to the scene outside. 她的目光禁不住被外面的风景所吸引。 来自《简明英汉词典》
  • He was irresistibly attracted by her charm. 他不能自已地被她的魅力所吸引。 来自《简明英汉词典》
29 mere rC1xE     
adj.纯粹的;仅仅,只不过
参考例句:
  • That is a mere repetition of what you said before.那不过是重复了你以前讲的话。
  • It's a mere waste of time waiting any longer.再等下去纯粹是浪费时间。
30 imprinted 067f03da98bfd0173442a811075369a0     
v.盖印(imprint的过去式与过去分词形式)
参考例句:
  • The terrible scenes were indelibly imprinted on his mind. 那些恐怖场面深深地铭刻在他的心中。
  • The scene was imprinted on my mind. 那个场面铭刻在我的心中。 来自《简明英汉词典》
31 binding 2yEzWb     
有约束力的,有效的,应遵守的
参考例句:
  • The contract was not signed and has no binding force. 合同没有签署因而没有约束力。
  • Both sides have agreed that the arbitration will be binding. 双方都赞同仲裁具有约束力。
32 moths de674306a310c87ab410232ea1555cbb     
n.蛾( moth的名词复数 )
参考例句:
  • The moths have eaten holes in my wool coat. 蛀虫将我的羊毛衫蛀蚀了几个小洞。 来自《简明英汉词典》
  • The moths tapped and blurred at the window screen. 飞蛾在窗帘上跳来跳去,弄上了许多污点。 来自《现代英汉综合大词典》
33 moth a10y1     
n.蛾,蛀虫
参考例句:
  • A moth was fluttering round the lamp.有一只蛾子扑打着翅膀绕着灯飞。
  • The sweater is moth-eaten.毛衣让蛀虫咬坏了。
34 twilight gKizf     
n.暮光,黄昏;暮年,晚期,衰落时期
参考例句:
  • Twilight merged into darkness.夕阳的光辉融于黑暗中。
  • Twilight was sweet with the smell of lilac and freshly turned earth.薄暮充满紫丁香和新翻耕的泥土的香味。
35 stimulus 3huyO     
n.刺激,刺激物,促进因素,引起兴奋的事物
参考例句:
  • Regard each failure as a stimulus to further efforts.把每次失利看成对进一步努力的激励。
  • Light is a stimulus to growth in plants.光是促进植物生长的一个因素。
36 singed dad6a30cdea7e50732a0ebeba3c4caff     
v.浅表烧焦( singe的过去式和过去分词 );(毛发)燎,烧焦尖端[边儿]
参考例句:
  • He singed his hair as he tried to light his cigarette. 他点烟时把头发给燎了。
  • The cook singed the chicken to remove the fine hairs. 厨师把鸡燎一下,以便去掉细毛。 来自《现代汉英综合大词典》
37 eddy 6kxzZ     
n.漩涡,涡流
参考例句:
  • The motor car disappeared in eddy of dust.汽车在一片扬尘的涡流中不见了。
  • In Taylor's picture,the eddy is the basic element of turbulence.在泰勒的描述里,旋涡是湍流的基本要素。
38 scorching xjqzPr     
adj. 灼热的
参考例句:
  • a scorching, pitiless sun 灼热的骄阳
  • a scorching critique of the government's economic policy 对政府经济政策的严厉批评
39 instinctively 2qezD2     
adv.本能地
参考例句:
  • As he leaned towards her she instinctively recoiled. 他向她靠近,她本能地往后缩。 来自《简明英汉词典》
  • He knew instinctively where he would find her. 他本能地知道在哪儿能找到她。 来自《简明英汉词典》
40 entirely entirely     
ad.全部地,完整地;完全地,彻底地
参考例句:
  • The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
  • His life was entirely given up to the educational work. 他的一生统统献给了教育工作。
41 caterpillars 7673bc2d84c4c7cba4a0eaec866310f4     
n.毛虫( caterpillar的名词复数 );履带
参考例句:
  • Caterpillars eat the young leaves of this plant. 毛毛虫吃这种植物的嫩叶。
  • Caterpillars change into butterflies or moths. 毛虫能变成蝴蝶或蛾子。 来自辞典例句
42 beetles e572d93f9d42d4fe5aa8171c39c86a16     
n.甲虫( beetle的名词复数 )
参考例句:
  • Beetles bury pellets of dung and lay their eggs within them. 甲壳虫把粪粒埋起来,然后在里面产卵。 来自《简明英汉词典》
  • This kind of beetles have hard shell. 这类甲虫有坚硬的外壳。 来自《现代汉英综合大词典》
43 rigid jDPyf     
adj.严格的,死板的;刚硬的,僵硬的
参考例句:
  • She became as rigid as adamant.她变得如顽石般的固执。
  • The examination was so rigid that nearly all aspirants were ruled out.考试很严,几乎所有的考生都被淘汰了。
44 fixed JsKzzj     
adj.固定的,不变的,准备好的;(计算机)固定的
参考例句:
  • Have you two fixed on a date for the wedding yet?你们俩选定婚期了吗?
  • Once the aim is fixed,we should not change it arbitrarily.目标一旦确定,我们就不应该随意改变。
45 vaguely BfuzOy     
adv.含糊地,暖昧地
参考例句:
  • He had talked vaguely of going to work abroad.他含糊其词地说了到国外工作的事。
  • He looked vaguely before him with unseeing eyes.他迷迷糊糊的望着前面,对一切都视而不见。
46 thwarted 919ac32a9754717079125d7edb273fc2     
阻挠( thwart的过去式和过去分词 ); 使受挫折; 挫败; 横过
参考例句:
  • The guards thwarted his attempt to escape from prison. 警卫阻扰了他越狱的企图。
  • Our plans for a picnic were thwarted by the rain. 我们的野餐计划因雨受挫。
47 battered NyezEM     
adj.磨损的;v.连续猛击;磨损
参考例句:
  • He drove up in a battered old car.他开着一辆又老又破的旧车。
  • The world was brutally battered but it survived.这个世界遭受了惨重的创伤,但它还是生存下来了。
48 dingy iu8xq     
adj.昏暗的,肮脏的
参考例句:
  • It was a street of dingy houses huddled together. 这是一条挤满了破旧房子的街巷。
  • The dingy cottage was converted into a neat tasteful residence.那间脏黑的小屋已变成一个整洁雅致的住宅。
49 subjectivity NtfwP     
n.主观性(主观主义)
参考例句:
  • In studying a problem,we must shun subjectivity.研究问题,忌带主观性。
  • 'Cause there's a certain amount of subjectivity involved in recreating a face.因为在重建面部的过程中融入了太多的主观因素?


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