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FIRST TEAR SCIENCE 



The surface of the inland ice is a smooth snow plain. 

 Extending from this ice field are huge glaciers having at 

 their ends a thickness of from 1000 to 2000 feet. One of 

 these has a rate of motion of nearly 100 feet per day in 

 summer, the highest rate ever observed in a glacier. The 

 average movement throughout the year on the border of 

 the ice sheet is probably not more than two inches a day. 



A VIEW OF THE JUNGFRAU. 



Showing the snowy mountains and verdant valleys which make 

 Switzerland the delight of the tourist. 



In the Antarctic region an area vastly greater than 

 Greenland is covered with ice probably of a greater thick- 

 ness. Although little is known about this ice cap, it is 

 thought by some explorers to be nearly as large as Europe 

 and to rest partly on an Antarctic continent and partly 

 on the sea bottom. 



168. Icebergs. Experiment 129. Fill a beaker so full of ice 

 water that if any more is added it will rim over. Put carefully into 



