ELEVATED COAST 301 



upon the outline of the coast and upon the industries of 

 its future inhabitants. The coastal plain which borders a 

 large part of our Atlantic coast shows the results of an 

 upward movement. The fiorded coast of Alaska affords 

 an example of a downward movement. 



TEMPLE OF JUPITER NEAR NAPLES. 



Although it can be proved that this coast has- been elevated and de- 

 pressed several times, so gradual has been the movement that the pillars 

 have not been overturned. 



143. Elevated Coast. Experiment 126. Tack enough sheet 

 lead to a very rough board so that it will remain submerged when 

 placed in water. Place the board in a shallow dish of water, lead 

 side down. Taking the board by one edge, gradually lift this edge 

 above the water surface. What kind of a line does the water form 

 where it meets the board? In what way would this line be changed 

 if the board were smoother? If it were rougher ? If the edge of the 

 board is lifted higher, does the position of the water line change? 

 Does its form materially alter? 



