76 



excavated to their firm beds, and properly covered 

 with dry stone culverts. 



5. All earth and soil, other than surface soil, which 

 may be above the established grade, should be excava- 

 ted to that grade. 



6. The roadway should be properly shaped with a 

 slope of one inch to twenty feet both ways, from the 

 axis of the roadway. 



7. The side-walks should be formed of dry subsoil, 

 to be elevated not more than nine inches from the 

 bottom of the side channels, and to have a pitch of three 

 inches towards the side channels. 



8. The surface of the roadway and side-walks should 

 be well rolled with a heavy roller, until a smooth, com- 

 pact surface, is formed. 



9. Upon the road-bed thus formed, a coating of bro- 

 ken stone, from two to three inches in diameter, should 

 be spread to the depth of four inches, and rolled with 

 a heavy roller, until the whole becomes a compact mass ; 

 after which another coating of the same stone, and of 

 the same depth should be added, and rolled as before. 

 And afterwards, another layer four inches in depth, of 

 hard, tough stone, should be added, and well rolled. 



10. The side-walks should be covered with a coating 

 of sharp, clean gravel, to a uniform depth of three 

 inches, and then rolled with a heavy roller ; after which, 

 a second coating of three inches to be added, then rolled, 

 until a firm, smooth surface, is formed. 



