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CHAPTER II THE ICE IN THE BOTTLE
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Hal and Mab were so excited at hearing their father speak about a new secret, that they could hardly eat their supper. There were so many questions they wanted to ask. But they managed to clear their plates, and then, when Mr. Blake had on his slippers1, and had put plenty of coal on the furnace, Hal climbed up on one knee, and Mab on the other.
"Now, Daddy, please tell us the secret," begged the little girl.
"And tell us what makes water freeze, and how it gets cold, and what makes us warm when we run," added Hal. "Sammie Jones is going to ask his father what makes it lightning in a thunder storm."
"My goodness me sakes alive, and some peanut candy!" cried Daddy Blake with a laugh. "What a lot of questions!"
"But the secret first, please," begged Mab.
"Well, let me see if it is going to be cold enough for me to tell you," said Mr. Blake. "It must be freezing cold, or the secret will be of no use."
Daddy Blake went to the door, outside of which hung an instrument called a thermometer. I guess you have seen them often enough. A thermometer is a glass tube, fastened to a piece of wood or perhaps tin, and inside is a thin, shiny column. This column is mercury, or quicksilver. Some thermometers have, instead of mercury, alcohol, colored red, so it can easily be seen.
You see mercury, or alcohol, will not freeze, except in much colder weather than you ever have where you live, unless you live at the North Pole. Up there it gets so cold that sometimes alcohol will became as thick as molasses, and then it is not of any use in a thermometer. But mercury will not freeze, even at the North Pole.
The word thermometer means something by which heat can be measured.
Though of course a thermometer will measure cold as well as heat.
"Is it cold enough?" asked Hal, as Daddy Blake came back from looking at the thermometer.
"Not quite," his father answered. "But the mercury is going down the tube."
"What makes it go down?" asked Mab.
"Well, let me think a minute, and I'll see if I can make it simple enough so you can understand," said Daddy Blake.
Those of you who have read the other "Daddy" books know how many things Mr. Blake told his children, and what good times Hal and Mab had with him. He was always taking them somewhere, and often one or the other of the children would call out:
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1
slippers
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| n. 拖鞋 | |
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2
thermos
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| n.保湿瓶,热水瓶 | |
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3
crabs
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| n.蟹( crab的名词复数 );阴虱寄生病;蟹肉v.捕蟹( crab的第三人称单数 ) | |
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4
wagons
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| n.四轮的运货马车( wagon的名词复数 );铁路货车;小手推车 | |
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5
swell
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| vi.膨胀,肿胀;增长,增强 | |
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swells
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| 增强( swell的第三人称单数 ); 肿胀; (使)凸出; 充满(激情) | |
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7
puffs
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| n.吸( puff的名词复数 );(烟斗或香烟的)一吸;一缕(烟、蒸汽等);(呼吸或风的)呼v.使喷出( puff的第三人称单数 );喷着汽(或烟)移动;吹嘘;吹捧 | |
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8
cork
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| n.软木,软木塞 | |
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9
snugly
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| adv.紧贴地;贴身地;暖和舒适地;安适地 | |
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10
fixed
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| adj.固定的,不变的,准备好的;(计算机)固定的 | |
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11
jingled
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| 喝醉的 | |
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12
standing
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| n.持续,地位;adj.永久的,不动的,直立的,不流动的 | |
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