"It is not expensive for us, because I use it carefully. Of course if you have a maid who turns on four burners at once, and runs them for hours, you will have a frightful bill. But see these saucepans; three of them, and triangular in shape, so that when they are put together they make what looks like one good-sized round one. You can fill all three with vegetables or other things, and cook them at once on one burner. That's one great saving, to begin with." "But even so, when you cook soup or corned beef, or such things, which take hours and hours, you must use lots of gas, in spite of yourself." "Ah, that is where another great economy comes in. Look at my fireless stove!" From a corner she drew out a covered wooden box and raised the lid. It was lined with asbestos pads, some fitted close to the sides, others ready to tuck in here and there, or put over the top beneath the lid. "Now," she said, triumphantly, "you behold the eighth wonder of the world! I want to make soup, let us say, or a slow-cooking rice-pudding, or a stew. I put any one of them on the gas-stove and let them boil for fifteen or twenty minutes, depending on the size of the materials. A small pudding will need less time and soup more,--say twenty or twenty-five. Then I take it off, cover it tightly, put the dish or pot in the box and tuck it up carefully, shut down the cover, and set the box away. When I want it, six or eight hours later on, I open the box, and behold, my soup or my pudding is done to a turn and not a cent's worth of fuel used." "They'd have burned you for witchcraft a century ago," said Dolly, gazing awestruck at the miraculous box. "So they would have--cheerfully," Mary replied. "But wait a minute; I forgot to tell you that it also freezes ice-cream." "That fairy story, my dear, I distinctly decline to believe." "It's a fact, nevertheless. The way to do it is this: I make what is called by the initiated, a mousse; that is, I boil a cup of sugar and a cup of water to a thread, pour it slowly over the stiff whites of three eggs, just as you make boiled icing, and when I have beaten it till it is cold I fold in half a pint of whipped cream and flavor it. Then I put the whole in a little covered pail and set that in a larger pail. To admit a somewhat embarrassing truth, they are merely lard-pails which I save for this purpose. I put cracked ice and salt between the two, cover both, and set them in the box. As the pads retain cold as well as they do heat, the ice does not melt, and the mousse gradually freezes itself. Unlike ice-cream, you must never stir it any way; so that if I put the mousse away at noon I take it out for dinner a perfect frozen mould, which both metaphorically and literally melts in your mouth." "Do have it every day," begged Dolly, with fervor.