Radiant Heat and Light 173 



246. Opera glasses are of value to those sitting at a distance from 



the stage. 



247. In order to see clearly through opera glasses, you have to 



adjust them. 



248. It is warm inside an Eskimo's hut although it is built of ice 



and snow. 



249. It is usually cooler on a lawn than on dry ground. 



250. Black clothes are warmer in the sunlight than clothes of 



any other color. 



