Book III chapter 13

Why no other Body, excepting a magnetick, is imbued¹ with verticity by being rubbed on a loadstone; and why no body is able to instil² and excite that virtue³, unless it be a magnetick.

L igneous⁴ substances floating on water never by their own strength turn round toward the poles of the earth, save by chance. So wires of gold, silver, brass⁵, tin, lead, or glass, pushed through corks⁶ and floating, have no sure direction; and for this reason they do not show poles or points of variation when rubbed with a loadstone. For those things which do not of themselves incline toward the poles and obey the earth are also not ruled by the touch of a loadstone; for the magnetick vigour⁷ has no entrance into their inward parts; neither is the magnetick form received by them, nor are their forms magnetically excited; nor, if it did enter, would it effect anything, because in those bodies (mixed up with various kinds of efflorescent humours and forms, corrupted⁸ from the original property of the earth) there are no primary qualities. But those prime qualities of iron are excited by the juxtaposition⁹ of a loadstone, just as brute¹⁰ animals or men, when they are awakened¹¹ out of sleep, move and put forth¹² their strength. Here one must marvel¹³ at a demonstrable error of B. Porta, who, while rightly opposing a very old falsehood about the diamond, in speaking of a power contrary to that of the loadstone, introduces another still worse opinion; that forsooth iron, when touched by a diamond, turns to the north. "If" (he says) "you rub a steel-Needle on a Diamond, and then put it in a Boat, or thrust it through a reed, or hang it up by a Thread, it will presently turn to the North, almost as well as if it had been touched with the Loadstone; but something more faintly. And, what is worth noting, the contrary part will turn the iron to the South: and when I had tried this in many steel-Needles, and put them all into the Water, I found, that they all stood equi-distant, pointing to the North." This indeed would be contrary to our magnetick rules. For this reason we made an experiment with seventy excellent diamonds, in the presence of many witnesses, on a large number of spikes¹⁴ and wires, with the most careful precautions, floating (thrust, of course, through their corks) on the surface of water; never, however, could we observe this. He was deceived by the verticity acquired from the earth (as stated above) in the spike¹⁵ or wire of iron itself, and the iron itself turned aside to its own definite pole; and he, being ignorant of this, thought it was done by the diamond. But let the investigators¹⁶ of natural phenomena¹⁷ take heed¹⁸ that they are not the more deceived by their own badly observed experiments, and disturb the commonwealth¹⁹ of letters with their errors and stupidities. Diamond is sometimes designated by the name of Sideritis, not because it is made of iron or because it draws iron, but on account of its lustre²⁰, resembling flashing steel; with such a lustre do the choicest pieces of diamond shine; hence by very many writers many qualities are imputed²¹ to diamond which really belong to siderite loadstone.

1 imbued   

v.使（某人/某事）充满或激起（感情等）( imbue的过去式和过去分词 )；使充满；灌输；激发（强烈感情或品质等）

参考例句：

• Her voice was imbued with an unusual seriousness. 她的声音里充满着一种不寻常的严肃语气。
• These cultivated individuals have been imbued with a sense of social purpose. 这些有教养的人满怀着社会责任感。 来自《简明英汉词典》

2 instil   

v.逐渐灌输

参考例句：

• It's necessary to instil the minds of the youth with lofty ideals.把崇高理想灌输到年青人的思想中去是很必要的。
• The motive of the executions would be to instil fear.执行死刑的动机是要灌输恐惧。

3 virtue   

n.德行，美德；贞操；优点；功效，效力

参考例句：

• He was considered to be a paragon of virtue.他被认为是品德尽善尽美的典范。
• You need to decorate your mind with virtue.你应该用德行美化心灵。

4 igneous   

adj.火的，火绒的

参考例句：

• Igneous rocks do not contain fossils.火成岩不含化石。
• The rocks here are igneous and do not fracture along predictable lines.这儿的石头都是火成岩，石头的裂缝极不规则。

5 brass   

n.黄铜；黄铜器，铜管乐器

参考例句：

• Many of the workers play in the factory's brass band.许多工人都在工厂铜管乐队中演奏。
• Brass is formed by the fusion of copper and zinc.黄铜是通过铜和锌的熔合而成的。

6 corks   

n.脐梅衣；软木( cork的名词复数 )；软木塞

参考例句：

• Champagne corks were popping throughout the celebrations. 庆祝会上开香槟酒瓶塞的砰砰声不绝於耳。 来自辞典例句
• Champagne corks popped, and on lace tablecloths seven-course dinners were laid. 桌上铺着带装饰图案的网织的桌布，上面是七道菜的晚餐。 来自飘（部分）

7 vigour   

（=vigor）n.智力，体力，精力

参考例句：

• She is full of vigour and enthusiasm.她有热情，有朝气。
• At 40,he was in his prime and full of vigour.他40岁时正年富力强。

8 corrupted   

（使）败坏( corrupt的过去式和过去分词 )； （使）腐化； 引起（计算机文件等的）错误； 破坏

参考例句：

• The body corrupted quite quickly. 尸体很快腐烂了。
• The text was corrupted by careless copyists. 原文因抄写员粗心而有讹误。

9 juxtaposition   

n.毗邻，并置，并列

参考例句：

• The juxtaposition of these two remarks was startling.这两句话连在一起使人听了震惊。
• It is the result of the juxtaposition of contrasting colors.这是并列对比色的结果。

10 brute   

n.野兽，兽性

参考例句：

• The aggressor troops are not many degrees removed from the brute.侵略军简直象一群野兽。
• That dog is a dangerous brute.It bites people.那条狗是危险的畜牲，它咬人。

11 awakened   

v.（使）醒( awaken的过去式和过去分词 )；（使）觉醒；弄醒；（使）意识到

参考例句：

• She awakened to the sound of birds singing. 她醒来听到鸟的叫声。
• The public has been awakened to the full horror of the situation. 公众完全意识到了这一状况的可怕程度。 来自《简明英汉词典》

12 forth   

adv.向前；向外，往外

参考例句：

• The wind moved the trees gently back and forth.风吹得树轻轻地来回摇晃。
• He gave forth a series of works in rapid succession.他很快连续发表了一系列的作品。

13 marvel   

vi.(at)惊叹vt.感到惊异；n.令人惊异的事

参考例句：

• The robot is a marvel of modern engineering.机器人是现代工程技术的奇迹。
• The operation was a marvel of medical skill.这次手术是医术上的一个奇迹。

14 spikes   

n.穗( spike的名词复数 )；跑鞋；（防滑）鞋钉；尖状物v.加烈酒于( spike的第三人称单数 )；偷偷地给某人的饮料加入（更多）酒精（ 或药物）；把尖状物钉入；打乱某人的计划

参考例句：

• a row of iron spikes on a wall 墙头的一排尖铁
• There is a row of spikes on top of the prison wall to prevent the prisoners escaping. 监狱墙头装有一排尖钉，以防犯人逃跑。 来自《简明英汉词典》

15 spike   

n.长钉，钉鞋；v.以大钉钉牢，使...失效

参考例句：

• The spike pierced the receipts and held them in order.那个钉子穿过那些收据并使之按顺序排列。
• They'll do anything to spike the guns of the opposition.他们会使出各种手段来挫败对手。

16 investigators   

n.调查者，审查者( investigator的名词复数 )

参考例句：

• This memo could be the smoking gun that investigators have been looking for. 这份备忘录可能是调查人员一直在寻找的证据。
• The team consisted of six investigators and two secretaries. 这个团队由六个调查人员和两个秘书组成。 来自《简明英汉词典》

17 phenomena   

n.现象

参考例句：

• Ade couldn't relate the phenomena with any theory he knew.艾德无法用他所知道的任何理论来解释这种现象。
• The object of these experiments was to find the connection,if any,between the two phenomena.这些实验的目的就是探索这两种现象之间的联系，如果存在着任何联系的话。

18 heed   

v.注意，留意；n.注意，留心

参考例句：

• You must take heed of what he has told.你要注意他所告诉的事。
• For the first time he had to pay heed to his appearance.这是他第一次非得注意自己的外表不可了。

19 commonwealth   

n.共和国，联邦，共同体

参考例句：

• He is the chairman of the commonwealth of artists.他是艺术家协会的主席。
• Most of the members of the Commonwealth are nonwhite.英联邦的许多成员国不是白人国家。

20 lustre   

n.光亮，光泽；荣誉

参考例句：

• The sun was shining with uncommon lustre.太阳放射出异常的光彩。
• A good name keeps its lustre in the dark.一个好的名誉在黑暗中也保持它的光辉。

21 imputed   

v.把（错误等）归咎于( impute的过去式和过去分词 )

参考例句：

• They imputed the accident to the driver's carelessness. 他们把这次车祸归咎于司机的疏忽。 来自《现代英汉综合大词典》
• He imputed the failure of his marriage to his wife's shortcomings. 他把婚姻的失败归咎于妻子的缺点。 来自辞典例句