. Our young folks [serial]. courtiers lookedvery serious too. They were thinking, eachone, that, if he was King, he would have any-body hung that dared to talk about atoms. Atable stood before the Lord High the table stood a copper basin, filled withpounded ice and salt, and two strong bottles ofiron, each closed by a screw firmly fixed in theneck. Your Majesty, said my Lord High Fiddle-stick, taking up one of them, these iron bot-tles are half an inch thick, and, as you see, theyare firmly fastened at the top. They are filledwith water, and I am going to place them inthis pound
. Our young folks [serial]. courtiers lookedvery serious too. They were thinking, eachone, that, if he was King, he would have any-body hung that dared to talk about atoms. Atable stood before the Lord High the table stood a copper basin, filled withpounded ice and salt, and two strong bottles ofiron, each closed by a screw firmly fixed in theneck. Your Majesty, said my Lord High Fiddle-stick, taking up one of them, these iron bot-tles are half an inch thick, and, as you see, theyare firmly fastened at the top. They are filledwith water, and I am going to place them inthis pounded ice and salt, and freeze the waterto show you what atoms can do. But I shouldlike first to explain, as well as I can, how waterfreezes. The water is made up of atoms, ortiny particles, of vapor, which are held together,like the atoms of iron, by cohesion. But wateris always much warmer than iron ; and, youremember, we found out that Heat is motion ;so, when I say that, I mean that the atoms of water have much more motion. Entered according to Act of Congress, in the year 1868, by Tick nor and Fields, in the ClerksOffice of the District Court of the District of IV. — NO. X. 27 578 Second Lecture on Heat. [October, than the atoms of iron. The iron has so little Heat motion, that cohesioncan hold its atoms tight and firm, and we call the iron hard and solid. Thewater atoms have so much Heat motion, that cohesion can hardly hold themin its grip, and the atoms roll over each other so loosely that we call watera liquid. I place these bottles in this ice and salt. The water atoms arechilled, and begin to huddle together. The motion of Heat will keep theatoms apart as long as it can, but as the atoms grow colder, — that is, as theylose their heat, — they lose their motion, and press closer together, till youmay say the Heat motion is gone entirely. The dancing water atoms clingtogether hard and stiff, and the water now takes up less room in the bottlesthan i
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