"Those," answered Mr Barlow, "who first began to observe the heavens as you do now, have observed certain stars, remarkable either for their brightness or position. To these they have given a particular name that they might the more easily know them again, and discourse of them to others; and these particular clusters of stars, thus joined together and named, they call constellations. But come, Harry, you are a little farmer, and can certainly point out to us Charles' Wain."
Harry then looked up to the sky, and pointed out
seven very bright stars towards the north. "You are right," said Mr Barlow; "four of these stars have put the common people in mind of the four wheels of a waggon, and the three others of the horses, therefore they have called them by this name. Now, Tommy, look well at these, and see if you can find any seven stars in the whole sky that resemble them in their position."
Tommy.—Indeed, sir, I do not think I can.
Mr Barlow.—Do you not think, then, that you can find them again?
Tommy.—I will try, sir. Now, I will take my eye off, and look another way. I protest I cannot find them again. Oh! I believe, there they are. Pray, sir (pointing with his finger), is not that Charles' Wain?
Mr Barlow.—You are right; and, by remembering these stars, you may very easily observe those which are next to them, and learn their names too, till you are acquainted with the whole face of the heavens.
Tommy.—That is indeed very clever and very surprising. I will show my mother Charles' Wain the first time I go home; I daresay she has never observed it.
Mr Barlow.—But look on the two stars which compose the hinder wheel of the waggon, and raise your eye up towards the top of the sky; do you not see a very bright star, that seems to be almost, but not quite, in a line with the two others?