56 Exercises on the Map. 



How is a dry-dock used ? // is filled with -water to receive vessels, 

 and emptied to repair them. 



What is a floating dry-dock ? One which is filled with water by 

 sinking it, and emptied by raising it. 



What is a mariner's compass? A box containing a card on which 

 is marked all the points north, east, south, west, etc., etc. and over 

 which a magnetic needle turns and points to the north. 



As the needle shows where the north is, it is easy to know 

 where is the south, the east, or the west. 



(See Wall Map, or p. 40.) In what direction do ships sail from 

 the United States to Europe ? Northeast. 



To Africa, for ivory and ostrich-feathers ? Southeast. 

 To the West Indies, for oranges and bananas ? South. 

 To South America, for coffee and India-rubber? Southeast. 

 To the Arctic or cold regions for furs ? North. 



With each of above answers, the pupil should point towards the place men- 

 tioned. 



EXERCISES ON THE MAP. 



On the map of the world you may see lines crossing from east 

 to west ; they are (pointing to them on the Wall Map, or referring 

 to p. 40), the Equator, Tropic of Cancer, Tropic of Capricorn, 

 Arctic Circle, and Antarctic Circle. They are all circles, and 

 appear so on all globps. 



They divide the earth's surface into five belts or Zones, which 

 differ greatly in the amount of their heat and cold. 



The hot zone is this (pointing to it), the Torrid. In it are the 

 hottest countries and islands of the world. 



Between what two circles is the Torrid Zone ? The Tropic of 

 Cancer and the Tropic of Capricorn . 



What great circle passes through the middle of the Torrid Zone ? 

 The Equator. 



