CHAPTER XIII METAL PLATING

IN the morning some wandering coppersmiths were passing. Mother Ambroisine had sold them the old kettle. Besides the sale, they were to make over the lamp whose foot had melted on the stove, and replate two saucepans. So the smiths lighted a fire in the open air, set up their bellows² on the ground, and in a large round iron spoon melted the old lamp, adding a little tin to replace what had been lost. The melted metal was run into a mold, from which it came out in the shape of a lamp. This lamp, still pretty large, was fixed³ on a lathe⁴ which a little boy set in motion; and while it turned, the master touched it with the edge of a steel tool. The tin thus planed off fell in thin shavings, rolled up like curl-papers. The lamp was visibly becoming perfect; it took the proper polish and shape.

Afterward⁵ they busied themselves plating the copper¹ saucepans. They cleaned them thoroughly⁶ inside with sand, put them on the fire, and, when they were very hot, went over the whole of their surface with a tow pad and a little melted tin. Wherever the pad rubbed, the tin stuck to the copper. In a few moments the inside of the saucepan, red before, was now shiny white.

Emile and Jules, while eating their little lunch of apples and bread, looked on at this curious work without saying a word. They promised themselves to ask their uncle the reason for whitening the inside of the copper saucepans with tin. In the evening, accordingly, they spoke⁷ of the tinning and plating.

“Highly cleaned and polished iron is very brilliant,” explained their uncle. “The blade of a new knife, Claire’s scissors, carefully kept in their case, are examples. But, if exposed to damp air, iron tarnishes⁸ quickly and covers itself with an earthy and red crust called—”

“Rust⁹,” interposed Claire.

“Yes, it is called rust.”

“The big nails that hold the iron wires where the bell-flowers climb up the garden wall are covered with that red crust,” remarked Jules; and Emile added:

“The old knife I found in the ground is covered with it too.”

“Those large nails and the old knife are encrusted with rust because they have remained for a long time exposed to the air and dampness. Damp air corrodes¹⁰ iron; it becomes incorporated with the metal and makes it unrecognizable. When rusty¹¹, iron no longer has the properties that make it so useful to us; it is a kind of red or yellow earth, in which, without looking attentively¹², it would be impossible to suspect a metal.”

“I can well believe it,” said Jules. “For my part, I should never have taken rust for iron with which air and moisture had become incorporated.”

“Many other metals rust like iron; that is to say, they are converted into earthy matter by contact with damp air. The color of rust varies according to the metal. Iron rust is yellow or red, that of copper is green, lead and zinc¹³ white.”

“Then the green rust of old pennies is copper rust,” said Jules.

“The white matter that covers the nozzle of the pump must be lead rust?” queried¹⁴ Claire.

“Exactly. The prime difficulty with rust is that it makes metals ugly: they lose their brilliance¹⁵ and polish; but it works still greater injury. There are harmless rusts¹⁶ which might get mixed with our food without danger: such is iron rust. On the contrary, copper and lead rusts are deadly poisons. If, by mischance, these rusts should get into our food, we might die, or at least we should experience cruel suffering. We will speak only of copper, for lead, on account of its quick melting, cannot go on the fire and is not used for kitchen utensils¹⁷. Copper rust, I say, is a mortal poison; and yet they prepare food in copper vessels¹⁸. Ask Mother Ambroisine.”

“Very true,” said she, “but I always have my eye on my saucepans: I keep them very clean and from time to time have them replated.”

“I don’t understand,” put in Jules, “how the work that the tinsmith did this morning could prevent the copper rust being a poison.”

“The smith’s work will not make the copper rust cease to be a poison,” replied Uncle Paul, “but it will prevent the rust’s forming. Of the common metals tin rusts the least. Exposed to the air a long time, it scarcely tarnishes. And then the rust, which forms in small quantities, is innocuous, like iron rust. To prevent copper from covering itself with poisonous green spots, to preserve it from rust, it must be kept from contact with damp air and also with certain alimentary¹⁹ substances such as vinegar, oil, grease—substances that provoke the rapid formation of rust. For this reason the copper saucepan is coated over with tin inside. Under the thin bed of tin which covers it, the copper cannot rust, because it is no longer in contact with the air. The tin remains²⁰; but this metal changes with difficulty, and, besides, its rust, if it forms any, is harmless. So they plate copper, that is to say they cover it with a thin bed of tin, to prevent its rusting²¹, and thus to prevent the formation of the dangerous poison that might, some day or other, be mixed with our food.

“They also tin iron, not to prevent the formation of poison, for the rust of this metal is harmless, but simply to preserve it from changing and covering itself with ugly red spots. This tinned iron is called tin-plate. Lids, coffee-pots, dripping-pans, graters, lanterns, and innumerable other things, are of tin-plate; that is to say, thin sheets of iron covered on both sides with a coating of tin.”

1 copper   

n.铜；铜币；铜器；adj.铜(制)的；(紫)铜色的

参考例句：

• The students are asked to prove the purity of copper.要求学生们检验铜的纯度。
• Copper is a good medium for the conduction of heat and electricity.铜是热和电的良导体。

2 bellows   

n.风箱；发出吼叫声，咆哮（尤指因痛苦）( bellow的名词复数 )；（愤怒地）说出（某事），大叫v.发出吼叫声，咆哮（尤指因痛苦）( bellow的第三人称单数 )；（愤怒地）说出（某事），大叫

参考例句：

• His job is to blow the bellows for the blacksmith. 他的工作是给铁匠拉风箱。 来自辞典例句
• You could, I suppose, compare me to a blacksmith's bellows. 我想，你可能把我比作铁匠的风箱。 来自辞典例句

3 fixed   

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。

4 lathe   

n.车床，陶器，镟床

参考例句：

• Gradually she learned to operate a lathe.她慢慢地学会了开车床。
• That lathe went out of order at times.那台车床有时发生故障。

5 afterward   

adv.后来；以后

参考例句：

• Let's go to the theatre first and eat afterward. 让我们先去看戏，然后吃饭。
• Afterward,the boy became a very famous artist.后来，这男孩成为一个很有名的艺术家。

6 thoroughly   

adv.完全地，彻底地，十足地

参考例句：

• The soil must be thoroughly turned over before planting.一定要先把土地深翻一遍再下种。
• The soldiers have been thoroughly instructed in the care of their weapons.士兵们都系统地接受过保护武器的训练。

7 spoke   

n.（车轮的）辐条；轮辐；破坏某人的计划；阻挠某人的行动 v.讲，谈（speak的过去式）；说；演说；从某种观点来说

参考例句：

• They sourced the spoke nuts from our company.他们的轮辐螺帽是从我们公司获得的。
• The spokes of a wheel are the bars that connect the outer ring to the centre.辐条是轮子上连接外圈与中心的条棒。

8 tarnishes   

污点，瑕疵，无光泽( tarnish的名词复数 )

参考例句：

• Brass tarnishes quickly in wet weather. 天气潮湿时黄铜很快会失去光泽。
• This metal tarnishes easily. 这种金属易变色。

9 rust   

n.锈；v.生锈；(脑子)衰退

参考例句：

• She scraped the rust off the kitchen knife.她擦掉了菜刀上的锈。
• The rain will rust the iron roof.雨水会使铁皮屋顶生锈。

10 corrodes   

v.使腐蚀，侵蚀( corrode的第三人称单数 )

参考例句：

• Corruption corrodes public confidence in a political system. 腐败可削弱公众对政治制度的信心。
• Iron corrodes unless it is greased or kept clean. 如果不涂油或保持清洁铁便会腐蚀。 来自《现代汉英综合大词典》

11 rusty   

adj.生锈的；锈色的；荒废了的

参考例句：

• The lock on the door is rusty and won't open.门上的锁锈住了。
• I haven't practiced my French for months and it's getting rusty.几个月不用，我的法语又荒疏了。

12 attentively   

adv.聚精会神地；周到地；谛；凝神

参考例句：

• She listened attentively while I poured out my problems. 我倾吐心中的烦恼时，她一直在注意听。 来自《简明英汉词典》
• She listened attentively and set down every word he said. 她专心听着，把他说的话一字不漏地记下来。 来自《简明英汉词典》

13 zinc   

n.锌；vt.在...上镀锌

参考例句：

• Brass is formed by the fusion of copper and zinc.黄铜是通过铜和锌的熔合而成的。
• Zinc is used to protect other metals from corrosion.锌被用来保护其他金属不受腐蚀。

14 queried   

v.质疑，对…表示疑问( query的过去式和过去分词 )；询问

参考例句：

• She queried what he said. 她对他说的话表示怀疑。 来自《简明英汉词典》
• \"What does he have to do?\" queried Chin dubiously. “他有什么心事？”琴向觉民问道，她的脸上现出疑惑不解的神情。 来自汉英文学 - 家（1-26） - 家（1-26）

15 brilliance   

n.光辉，辉煌，壮丽，（卓越的）才华，才智

参考例句：

• I was totally amazed by the brilliance of her paintings.她的绘画才能令我惊歎不已。
• The gorgeous costume added to the brilliance of the dance.华丽的服装使舞蹈更加光彩夺目。

16 rusts   

n.铁锈( rust的名词复数 )；（植物的）锈病，锈菌v.（使）生锈( rust的第三人称单数 )

参考例句：

• Copper nails are better than iron nails because the iron rusts. 铜钉比铁钉好，因为铁会生锈。 来自辞典例句
• The axenic culture of rusts has been achieved on various defined media. 在各种规定的培养基上可得到锈菌的单体纯净培养物。 来自辞典例句

17 utensils   

器具，用具，器皿( utensil的名词复数 )； 器物

参考例句：

• Formerly most of our household utensils were made of brass. 以前我们家庭用的器皿多数是用黄铜做的。
• Some utensils were in a state of decay when they were unearthed. 有些器皿在出土时已经残破。

18 vessels   

n.血管( vessel的名词复数 )；船；容器；（具有特殊品质或接受特殊品质的）人

参考例句：

• The river is navigable by vessels of up to 90 tons. 90 吨以下的船只可以从这条河通过。 来自《简明英汉词典》
• All modern vessels of any size are fitted with radar installations. 所有现代化船只都有雷达装置。 来自《现代汉英综合大词典》

19 alimentary   

adj.饮食的，营养的

参考例句：

• He had the disease of alimentary canal.他患了消化道疾病。
• This system is mainly a long tube,called the alimentary canal.这一系统主要是一根长管，称作消化道。

20 remains   

n.剩余物，残留物；遗体，遗迹

参考例句：

• He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
• The remains of the meal were fed to the dog.残羹剩饭喂狗了。

21 rusting   

n.生锈v.（使）生锈( rust的现在分词 )

参考例句：

• There was an old rusting bolt on the door. 门上有一个生锈的旧门闩。 来自辞典例句
• Zinc can be used to cover other metals to stop them rusting. 锌可用来涂在其他金属表面以防锈。 来自辞典例句