44 THE WONDERFUL HOUSE THAT JACK HAS 



are large cold-storage houses in which eggs laid in the 

 spring and summer are kept for the winter market. 

 Where there are no such houses, eggs that are to be 

 kept for a long time are placed in some preservative. 



Egg Producers. 



Water glass, or liquid glass, as it is sometimes called, 

 seems to be the most effective of these preservatives. 

 Well-known dealers claim that they have preserved 

 fifty dozen for several months in a mixture of one- 

 tenth water glass and nine-tenths water. As eggs 

 are such valuable building material, it is important to 



