428 AGRICULTURE 



grade of the incline, and find how many feet rise, to each 

 one hundred feet? 



3. How many split-log drags in your school district? 

 What road machinery is owned by the township or road 

 district ? 



4. Under what management is the care of roads in 

 your locality? Name the road officials of your district 

 and county. Give a statement of the road laws of your 

 state. 



5. What different materials are used in constructing 

 bridges, culverts and road drainage systems in your local- 

 ity ? Which seems to be the most satisfactory ? 



6. Do any transcontinental or state highways pass 

 through your state? If so, locate them on a state map 

 and name them. 



7. For whom was the macadam road named ? Describe 

 how such a road is built. 



8. Look up the story of each of the following men and 

 learn what he did to help the cause of gqod roads : Pierre- 

 Marie Fresaguet, J. L. MacAdam, Thomas Tilford, EH 

 Whitney Blake. 



6. Demonstrations 



Many of the demonstrations should be conducted out on 

 the public highway and when possible under the supervi- 

 sion or direction of the road supervisor, commissioner or 

 expert. 



1. Demonstrate how to make a split-log drag, either 

 full size or miniature. 



2. Demonstrate by means of drawing, paper or wood 

 construction, the various types of drainage used in road 

 building. 



3. Show how properly to crown a road. 



4. Demonstrate how to repair a rut in a permanent 

 roadway. 



5. Demonstrate by drawing a roadway showing cor- 

 rect perspective, crowning, drainage, etc. 



