340 



AGRICULTURE 



Sand-clay roads. Deep sand-beds make the roads bad 

 in many parts of the South. Some counties have changed 

 these sand-beds into good firm roads by hauling clay and 

 thoroughly mixing it with the upper six inches of sand. 

 The clay and sand are mixed while wet by means of plows 

 and harrows, or by the wheels of vehicles. Then the road 

 is kept constantly rounded, so that water d^es not stand 

 on it. 



KXERCISE. Are sandy roads best when dry or wet? Are clay 

 roads best when dry or wet? Watch the teams struggle up some steep 

 hill and then consider whether the road could easily be changed to 

 avoid that hill or to climb it more gradually. 



Courtesy of U, S Dept. of Agriculture 



FIG. 217. JUNCTION OF Two GRAVEL ROADS IN TENNESSEE 

 Showing the size of loads sometimes hauled over the best roads 



