20 THE NEW METHOD 



mercury which we could see inside of the tube in 

 little globes at the top of the tube." Susie. 



11 The wind is blowing quite hard today, and it is 

 very cold. The sky is all covered with thick, dark 

 and gray nimbus clouds, and although it was very 

 pleasant this morning and the sun was shining very 

 brightly, now it is dark and looks as if it would rain 

 very soon. 



"We had experiments after recess to show that 

 shells are composed of oxygen, calcium and carbon, 

 the same as all marble and limestone. Forty-eight 

 per cent, of a shell is oxygen, 40 per cent, is calcium, 

 and 12 per cent, is carbon. 



u In our arithmetic lesson we found the weight of 



each element in several shells which were weighed 



before us for our problems in arithmetic." 



Cora. 



' ' This is a warm and sunny day. The sky is blue, 

 and half covered with large white cumulus clouds. 

 We have had a lesson upon a very beautiful mineral 

 called calcite. It looks like ice, but not so clear, but 

 it is translucent. The sides of a crystal are either 

 square or oblong. The sides have two obtuse angles, 

 and two acute angles. A crystal of calcite is a rhom- 

 bohedron, for a cube has all right angles. 



"Calcium is a rare metal. It is yellow, and it 



