Some days after this, as Mr Barlow and the two boys were walking out together, they happened to pass near a windmill; and, on Harry's telling Tommy what it was, Tommy desired leave to go into it and look at it. Mr Barlow consented to this, and, being acquainted with the miller, they all went in and examined every part of it with great curiosity; and there little Tommy saw with astonishment that the sails of the mill, being constantly turned round by the wind, moved a great flat stone, which, by rubbing upon another stone, bruised all the corn that was put between them till it became a fine powder. "Oh dear!" said Tommy, "is this the way they make bread?" Mr Barlow told him this was the method by which the corn was prepared for making bread; but that many other things were necessary before it arrived at that state. "You see that what runs from these millstones is only a fine powder, very different from bread, which is a solid and tolerably hard substance." As they were going home Harry said to Tommy, "So you see now, if nobody chose to work, or do anything for himself, we should have no bread to eat; but you could not even have the corn to make it of without a great deal of pains and labour." _Tommy._--Why not? does not corn grow in the ground of itself? _Harry._--Corn grows in the ground, but then first it is necessary to plough the ground, to break it to pieces. _T._--What is ploughing? _H._--Did you never see three or four horses drawing something along the fields in a straight line, while one man drove, and another walked behind holding the thing by two handles? _T._--Yes, I have; and is that ploughing? _H._--It is; and there is a sharp iron underneath, which runs into the ground and turns it up all the way it goes. _T._--Well, and what then? _H._--When the ground is thus prepared, they sow the seed all over it, and then they rake it over to cover the seed, and then the seed begins to grow, and shoots up very high; and at last the corn ripens, and they reap it, and carry it home. _T._--I protest it must be very curious, and I should like to sow some seed myself, and see it grow; do you think I could? _H._--Yes, certainly, and if you will dig the ground to-morrow I will go home to my father, in order to procure some seed for you.