ETC. 207 



pense than in those places where the thermometer frequently 

 goes down to zero. Protection against frost is expensive in 

 Germany, and here it costs nothing. The Californian beet su- 

 gar mills are the only successful establishments of the kind in 

 United States, but they are not very profitable, or they would 

 have been enlarged beyond their present capacities. Each is 

 prepared now to work up sixty tons of beets in a day. 



