76 AN EXPERIMENT WITH A STEAM DRILL 



ROAD SURFACING. 



It was intended to carry out a series of experiments with 

 different materials in surfacing, but so much effort was found 

 necessary to complete the grading that only a small amount of 

 work was done in this line. The main experiments were post- 

 poned, and mean-time a careful study of surfacing methods 

 was entered upon in connection with the study of town manage- 

 ment of roads, as specially exemplified in the town of Durham. 

 Therefore, the little that was done will be considered in con- 

 nection with the latter subject. 



