If the Boas furnish the most terrible examples of the tremendous powers of destruction possessed1 by a few of that division of the Serpent tribe, whose bite is unattended with the effusion of venom2, the Rattlesnakes afford a no less remarkable5 instance of the dreadful malignity7 of the poison with which others of the tribe are so abundantly supplied. This poison is secreted8 by a gland9 of considerable size situated10 beneath the eye, the excretory duct of which terminates on each side at the base of a long and tubular fang11 in the upper jaw12, which is concealed13 while the animal is at rest in a fold of the gum, but is capable of being instantaneously[240] erected14 when he is irritated, and affords at the same time the means of inflicting15 the wound and of insinuating16 into it the deadly fluid with which it is charged. In the Rattlesnakes these two fangs17 are the only visible teeth implanted in the upper jaw; but behind each of them are several rudiments18 of others by which they are from time to time replaced. Their other distinguishing characters consist in the whole of the transverse plates which cover the under surface of the body and of the tail being simple, and in the singular apparatus19 by which the latter is terminated, and which is formed of a series, more or less numerous according to the age of the individual, of flattened20 rings loosely attached one within the other in such a manner as to produce a peculiar21 rattling22 sound when the tail is moved with any degree of quickness. The number of rings commonly varies from five to twelve; but in very old specimens23 it is said to have been found to exceed forty.
All the known species are natives of America, in the vast forests of which they may be said literally24 to swarm25; but happily, like most of the other venomous snakes, they never exert their terrible qualities upon man except in self-defence, and the warning rattle3 is always heard to give notice of their approach. Their bite is almost uniformly fatal even to the largest animals, and the latter frequently evince such an instinctive26 dread6 of them, that, according to M. Bosc, it is almost impossible to compel a horse or a dog to advance towards them. Their food consists principally of the smaller quadrupeds, such as squirrels and rabbits, of other reptiles27, and of birds, although they rarely climb trees in pursuit of their prey28. It was long believed, and the notion is still popularly[241] current, that they possessed the power of fascinating their victims, which were thought to be so completely under the influence of their glance as to precipitate29 themselves of their own accord into the open throat of their enemy; but the truth appears to be that they actually inspire so great a degree of terror that the animals selected for their attacks are commonly rendered incapable30 of offering such resistance as might otherwise be in their power, or even of attempting to escape from their pursuit.
Like most reptiles they retire during the winter into holes, in which they remain in a torpid31 state until the return of spring; and during this period they may be taken or destroyed without danger. Their flesh is eaten by the negroes, who also apply their fat, as well as their rattles4, to various medicinal or superstitious32 uses.
The number at present in the Tower exceeds a hundred, varying from four to six feet in length, and differing very considerably33 from each other both in colour and markings.
点击收听单词发音
1 possessed | |
adj.疯狂的;拥有的,占有的 | |
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2 venom | |
n.毒液,恶毒,痛恨 | |
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3 rattle | |
v.飞奔,碰响;激怒;n.碰撞声;拨浪鼓 | |
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4 rattles | |
(使)发出格格的响声, (使)作嘎嘎声( rattle的第三人称单数 ); 喋喋不休地说话; 迅速而嘎嘎作响地移动,堕下或走动; 使紧张,使恐惧 | |
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5 remarkable | |
adj.显著的,异常的,非凡的,值得注意的 | |
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6 dread | |
vt.担忧,忧虑;惧怕,不敢;n.担忧,畏惧 | |
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7 malignity | |
n.极度的恶意,恶毒;(病的)恶性 | |
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8 secreted | |
v.(尤指动物或植物器官)分泌( secrete的过去式和过去分词 );隐匿,隐藏 | |
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9 gland | |
n.腺体,(机)密封压盖,填料盖 | |
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10 situated | |
adj.坐落在...的,处于某种境地的 | |
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11 fang | |
n.尖牙,犬牙 | |
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12 jaw | |
n.颚,颌,说教,流言蜚语;v.喋喋不休,教训 | |
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13 concealed | |
a.隐藏的,隐蔽的 | |
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14 ERECTED | |
adj. 直立的,竖立的,笔直的 vt. 使 ... 直立,建立 | |
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15 inflicting | |
把…强加给,使承受,遭受( inflict的现在分词 ) | |
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16 insinuating | |
adj.曲意巴结的,暗示的v.暗示( insinuate的现在分词 );巧妙或迂回地潜入;(使)缓慢进入;慢慢伸入 | |
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17 fangs | |
n.(尤指狗和狼的)长而尖的牙( fang的名词复数 );(蛇的)毒牙;罐座 | |
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18 rudiments | |
n.基础知识,入门 | |
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19 apparatus | |
n.装置,器械;器具,设备 | |
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20 flattened | |
[医](水)平扁的,弄平的 | |
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21 peculiar | |
adj.古怪的,异常的;特殊的,特有的 | |
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22 rattling | |
adj. 格格作响的, 活泼的, 很好的 adv. 极其, 很, 非常 动词rattle的现在分词 | |
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23 specimens | |
n.样品( specimen的名词复数 );范例;(化验的)抽样;某种类型的人 | |
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24 literally | |
adv.照字面意义,逐字地;确实 | |
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25 swarm | |
n.(昆虫)等一大群;vi.成群飞舞;蜂拥而入 | |
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26 instinctive | |
adj.(出于)本能的;直觉的;(出于)天性的 | |
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27 reptiles | |
n.爬行动物,爬虫( reptile的名词复数 ) | |
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28 prey | |
n.被掠食者,牺牲者,掠食;v.捕食,掠夺,折磨 | |
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29 precipitate | |
adj.突如其来的;vt.使突然发生;n.沉淀物 | |
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30 incapable | |
adj.无能力的,不能做某事的 | |
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31 torpid | |
adj.麻痹的,麻木的,迟钝的 | |
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32 superstitious | |
adj.迷信的 | |
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33 considerably | |
adv.极大地;相当大地;在很大程度上 | |
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