Of course the two first ideas are that the sun rises in the east and sets in the west; from this fact he will be able to tell the direction in which the places near his own home, or the streets of his own town, lie. Bid him stand so that his right hand is towards the east where the sun rises, and his left towards the west where the sun sets. Then he is looking towards the north and his back to towards the south. All the houses, streets and towns on his right hand are to the east of him, those on the left are to the west. The places he must walk straight forward to reach are north of him, and the places behind him are to the south. If he is in a place new to him where he has never seen the sun rise or set and wants to know in what direction a certain road runs, he must notice in what direction his own shadow falls at twelve o’clock, because at noon the shadows of all objects fall towards the north. Then if he face the north, he has, as before, the south behind him, the east on his right hand, the west on his left; or if he face the sun at noon, he faces south.