ECONOMY 291 



EXPERIMENTS FOR THE HOME 



Leaks in the pipes or wires may be made known by reading 

 the meters carefully and then not using any gas, water, or 

 electricity during the test. The amount of water which is 

 used on a lawn can be measured and some idea obtained of 

 the amount of water which is necessary for keeping a lawn in 

 good condition. One gas burner, or one electric light, may 

 be burned, and the cost per hour may be reckoned. It can 

 be shown that a gas burner which blows gives less light and 

 consumes more gas than does a burner which burns quietly. 

 Similarly, an electric lamp which burns dimly uses nearly as 

 much electricity as a lamp burning to full candle power. 



References : 



1. 1803 : 80. The Gas Meter. 



210. ECONOMY 



There is a certain amount of waste in all food; clothing 

 cannot be made without a loss of some of the cloth ; wear is 

 taking place in everything all the time; heat is lost from 

 houses through ventilation; and there is a constant tendency 

 for all the material which is available to man to become un- 

 available. Some of the waste may be prevented or dimin- 

 ished by care and by the application of knowledge. This is 

 economy. 



Sometimes an apparent saving of money is a loss in the 

 end. When we consider that all animal heat is produced 

 by the slow combustion of food, we shall see how erroneous 

 is the idea that a cheap barn is good enough for stock. If the 

 horses and cattle are not warm, they must eat more food and 

 must change their food into heat within their systems, and 



