OF EDUCATION 21 



costs ten times as much as gold. Carbon is a black 

 element generally, but a diamond is crystalized car- 

 bon, and it is the hardest of all minerals." David. 



"At recess the wind was easterly and the sky 

 was mostly covered" with dark nimbus clouds. The 

 wind blows at the rate of about seven miles an hour. 

 I think it will snow before night. 



" This morning we had several experiments on the 

 most abundant of all the elements. Its name is oxy- 

 gen. A coarse white powder like salt was put into 

 a flask and heated in the flame of alcohol. The 

 oxygen was separated from the powder and forced 

 through a tube into some glass jars. Then a piece 

 of iron wire was put into the jar and it burned, mak- 

 ing a very bright flame, and sparks went out every 

 way." JoiK. 



"It is very pleasant today, and is much warmer 

 than it has been for some time except yesterday, 

 when the ice was melting and dropping from the 

 houses. Today, though the sun is shining, the ice 

 is hard and smooth. Yesterday the sky was covered 

 with very interesting cumulus and stratus clouds. 

 They all had a reddish tinge, but were ornamented 

 with many other colors and shades, and a great 

 variety of shapes which were changing all the time. 



