Strangely enough, the one really dangerous spider on the American continent is small, obscure, and practically unknown to popular or journalistic hysteria. Latrodectus mactans is its scientific name. It is about the size of a large pea, black with a red spot on the back -- a useful danger signal -- and spins a small web in outhouses or around wood-piles. So far as is known, its poison is the most virulent1 and powerful, drop for drop, secreted2 by any living creature. Cobra virus, in the minute quantity which the Latrodectus's glands3 contain, would probably have no appreciable4 effect upon man; whereas the tiny spider's venom5, in the volume injected by the cobra's stroke, would slay6 a herd7 of elephants. Were this little-known crawler as large as the common black hunting spider of our gardens and lawns, its bite would be almost invariably fatal. Happily, the "red-spot's" fangs8, being small and weak, can with difficulty penetrate9 the skin, and are able to inject venom in dangerous quantity only when the bite is inflicted10 upon some tender-skinned portion of the body. Nevertheless, fatalities11 consequent upon the bite of this insect are sufficiently12 well attested13 to take rank as established scientific facts.
One of the most detailed14 comes from an intelligent farmer of Greensboro, North Carolina. A workman in his employ, while hauling wood, brushed at something crawling upon his neck and felt a sharp, stinging sensation. He found a small, black spider with a red spot. This was at 8.30 A.M. Presently, ten small white pimples15 appeared about the bitten spot, though no puncture16 was visible and there was no swelling17. The pain soon passed, but returned in three hours and became general, finally settling in the abdomen18 and producing violent cramps19. At one o'clock the man had a spasmodic attack. Two hours later he had so far recovered as to be able to go back to work, for an hour. Then the spasms20 took him again; he sank into coma21, and died between ten and eleven o'clock that evening, about fourteen hours after the bite. At no time were there local symptoms or swelling, other than the slight eruption22, but the neck, left arm, and breast are reported as having assumed a stonelike hardness.
The same farmer had seen, three years previous, a negro who had been bitten upon the ankle by a "red-spot" and who suffered from diminishingly severe spasmodic attacks for three weeks. The white pimples appeared in this case also. The negro recovered, but the eruption reappeared for years thereafter whenever he was overheated.
Recoveries from Latrodectus bite are much more common, in the records, than deaths. Dr. Corson, of Savannah, Georgia, reports six cases, characterized by agonizing23 pains, spasmodic contractions24 like those of tetanus, and grave general symptoms. All recovered. From Anaheim, California, a fatal case is reported by Dr. Bickford, death occurring twenty hours after the bite. William A. Ball, of San Bernardino, California, gives a vivid account of his sensations after being bitten on the groin by a red-spotted spider, the data being attested by his physician. Shortly after being bitten, he began to suffer great agony, with convulsive contractions of the muscles.
"The pains in my hip-joints, chest, and thighs25 grew rapidly more violent, until it seemed that the bones in these parts of my body were being crushed to fragments." He was seriously ill for ten days.
1 virulent | |
adj.有毒的,有恶意的,充满敌意的 | |
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2 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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3 glands | |
n.腺( gland的名词复数 ) | |
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4 appreciable | |
adj.明显的,可见的,可估量的,可觉察的 | |
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5 venom | |
n.毒液,恶毒,痛恨 | |
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6 slay | |
v.杀死,宰杀,杀戮 | |
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7 herd | |
n.兽群,牧群;vt.使集中,把…赶在一起 | |
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8 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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9 penetrate | |
v.透(渗)入;刺入,刺穿;洞察,了解 | |
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10 inflicted | |
把…强加给,使承受,遭受( inflict的过去式和过去分词 ) | |
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11 fatalities | |
n.恶性事故( fatality的名词复数 );死亡;致命性;命运 | |
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12 sufficiently | |
adv.足够地,充分地 | |
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13 attested | |
adj.经检验证明无病的,经检验证明无菌的v.证明( attest的过去式和过去分词 );证实;声称…属实;使宣誓 | |
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14 detailed | |
adj.详细的,详尽的,极注意细节的,完全的 | |
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15 pimples | |
n.丘疹,粉刺,小脓疱( pimple的名词复数 ) | |
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16 puncture | |
n.刺孔,穿孔;v.刺穿,刺破 | |
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17 swelling | |
n.肿胀 | |
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18 abdomen | |
n.腹,下腹(胸部到腿部的部分) | |
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19 cramps | |
n. 抽筋, 腹部绞痛, 铁箍 adj. 狭窄的, 难解的 v. 使...抽筋, 以铁箍扣紧, 束缚 | |
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20 spasms | |
n.痉挛( spasm的名词复数 );抽搐;(能量、行为等的)突发;发作 | |
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21 coma | |
n.昏迷,昏迷状态 | |
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22 eruption | |
n.火山爆发;(战争等)爆发;(疾病等)发作 | |
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23 agonizing | |
adj.痛苦难忍的;使人苦恼的v.使极度痛苦;折磨(agonize的ing形式) | |
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24 contractions | |
n.收缩( contraction的名词复数 );缩减;缩略词;(分娩时)子宫收缩 | |
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25 thighs | |
n.股,大腿( thigh的名词复数 );食用的鸡(等的)腿 | |
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