LUMBER 411 



8. What is a shade tree? 



9. How does a forest tree differ from a shade tree? 



10. How are the shade or broad-leaved trees divided? 



11. How are trees classified as to size? 



12. Describe the growth of lumber. 



13. When should timber be cut? 



14. How much moisture has green lumber? 



15. How is lumber seasoned? 



16. What are the advantages of natural drying? 



17. What are the advantages of kiln-drying? 



