"I see what appears to be the end of the ocean, but these great waters stretch away for many hundred miles farther. If you were to get on a ship and sail away as far as you can see from here, you would still see just as much water before you, and the sea and the sky would still appear to touch each other: and however far you went it would always be so, until you came where the land bounds the ocean on the other side. The place where the sky and water seem to meet, is called the horizon; and it is because they do seem to touch, that the sun appeared to you to come out of the water. It is rather a difficult thing for such little girls as you and Bessie to understand, but I will try to make it plain to you. You know that the earth is round, like a ball, do you not, Maggie?"