In this pleasing fairy story Mary Howitt has told the tale of the curious explanation offered by the peasants of Denmark and Norway for the saltness of the sea. It naturally raises in a child's mind the question, why is the sea salt? The question can be answered in this manner: The rain falls down in little drops, some of which soak into the ground, while others make rivulets that run into brooks that in time join the rivers that flow into the sea. Much of the water that soaks into the ground finds its way again to the surface in springs that feed the brooks and keep them alive when no rain is falling. Of course the sun when it shines turns some of the water into vapor that rises again to the sky. Sometimes on a cool morning you can see the mist or vapor too heavy to rise out of sight and too light to fall as rain. Wherever there is water, some of it is rising into the air, especially when the sun shines and it is warm and the wind blows. The sea is so big that great quantities of vapor are rising from it all the time and being blown over the land to be cooled, to gather into rain and to fall again where it will refresh the earth and make the plants grow. So you see water is traveling through the air all the time, up from the earth, the streams and the seas, through the air, back to the earth and through it into the sea again in a great series of everlasting circuits. We are hardly ever conscious of the moisture except when it falls as rain or snow and spoils our plans. When the water is passing through the land it dissolves and gathers up various substances, especially salt, which "melts" in water very easily. This salt and the other bitter and brackish substances are carried little by little, sometimes pausing, but always on and on till they reach the sea, beyond which they cannot go, for the sea is in the lowest parts of the earth. Now come the sun, the heat and the winds and evaporate the water; that is, draw up the vapor to start on its new circuit. But, notice this, the vapor that rises is pure water. The salt and other substances are left in the sea. At first it was only a little that was left, then more, always a little more till the water couldn't hold it all and it sank to the bottom and made deposits of salt and other things. But the streams always bring more sediment and the heat and the winds carry off pure water and leave the rest salty and bitter. And that is the real reason why the sea is salt. _Faithless Sally Brown_ (Volume III, page 92) It is a thankless task to try to explain a joke, but some of the fun in these jolly old rhymes depends upon facts that are not generally known or that may have been forgotten. A few words here may help to answer questions. Stanza II. "Fetched a walk." This is an application of a nautical term, as in "to fetch headway."