330 STATE BOARD OF AGRICULTURE 



Aiioilior jjroal source of powor tliat is iisod but little is the direct 

 lieat of the sun. Solar motors have been experimented with to some 

 extent but they can hardly be considered a commercial success as yet. 



The solar motor may not be used very extensively for many years to 

 come, but there are localities where steam power is prohibited on ac- 

 count of the cost of haulinji" the coal, and where the sun shines most 

 of the time in which it should prove valuable. It may be the means of 

 reclaiming many acres of desert land and thus make two blades of 

 grass grow where nothing grew before. 



Solar motors, wind mills, and water wheels utilize forces that prom- 

 ise to last as long as the sun shines, so we have not much reason to 

 fear that the progress of the w'orld will cease because of the exhaustion 

 of Avhat are now our chief sources of power. 



