FORESTRY. 173 



3. On which side of a tree do we usually find moss growing in a 

 thick forest? 



4. How does the distance apart effect the shape of trees? 



5. Why does one kind of lumber resist decay longer than another? 



6. Does the weight of lumber have any effect on the period of life? 



7. Why does paint or creosote keep timlber from rotting? 



8. What is dry rot? 



9. Why does wood remain well conserved under water? 



10. What kinds of trees are most often struck by lightning? 



11. Name several reasons why decaying wood and dead limbs and 

 injured trees should be removed from the wood-lot. 



12. In what parts of a large tract of woodland or forest do you 

 find the most dead and injured trees? Name some causes. 



13. Name some of the causes of forest fires. What are the effects? 



14. What are some of the methods adopted in fighting fires in 

 the woods and fields? 



15. Why does green wood of some varieties burn more readily 

 than green wood of other varieties? 



16. What kinds of trees are best for framing timber, rough lumber, 

 finishing timber, posts, telephone poles, roofing, floors, siding, lathing, 

 ties, bridges, walks, wagon wheels, wagon boxes, wagon tongues, handles, 

 ladders, baskets, pulp, butter dishes, crates, and fancy woodwork. Give 

 reasons for your answers. 



17. How will a study of the use of woods result in great economy 

 in the conservation of valuable timber? 



18. Name some of the champions of forest conservation and 

 reforestation in the United States. 



19. What great work has been accomplished by Gifford Pinchot? 



20. Why do trees grow taller in the thick 'forest than in an open space 

 or field? How does this effect the value of timber? How should we 

 prune fruit trees? 



Laboratory Exercises. 



1. Mount samples of wood for study. 



2. Make collections of nuts, cones, and other seed. 



3. Make collections of leaves, buds, flowers. 



4. Cut circular sections to show rings of growth. 



5. Get specimens of quarter sawed lumber. 



6. Get samples of knot-holes caused by dead limbs. 



7. Make a demonstration of the use of cement in treating decayed 

 spots in trees. 



8. Make a collection of twigs bearing different kinds of nuts. 



9. Have samples showing methods of branching of different kinds 

 of trees. 



