PHYSIOLOGICAL PROCESSES IN PLANTS 109 



6. What is grafting wax ? How is it made ? 



7. What is budding ? How is it done ? 



8. Name some steins useful to man. 



9. Name some stem products useful to man. 



10. Name some twining stems. Some fleshy stems. 



11. The uses of rattan and bamboo. 



12. The storage of starch in stems. 



13. The effect of girdling stems. 



14. What is the cambium layer ? 



15. How may stems protect themselves ? 



16. W T hy are the forests and streams of Maine of more worth 

 than her agricultural resources ? 



17. Why should Victor Hugo say, "For the world lets 

 everything perish which is nothing but selfishness everything 

 that does not represent an idea or a benefit for the human 

 race " ? 



Special Reports 



1. History and origin of the potato. 



2. Commercial products from stems. 



3. The big trees of California. 



4. Methods of forest preservation. 



5. The manufacture of paper from stems. 



6. Stems used as food. 



7. Government field work in forestry. 



8. Plant propagation by stems. 



References 



Hunter, Essentials of Biology, Chaps. VIII, X. 



Osterhout, Experiments with Plants. Chap. V. 



Taylor, "Street Trees, Care and Preservation." Cornell University, 

 Agricultural Bulletin 256, June, 1908. 



Pinchot, "The Forest Service." U. S. Department of Agriculture, Cir- 

 cular 36, 1906. 



Commercial Tree Studies. U. S. Department Agriculture, Forestry 

 Service, Bulletins 13, 22, 31, 33, 37, 38, 53, 58, and 64. 



Hough, " The Slaughter of the Trees." Evenjbodifs Magazine, May, 

 1908. 



Pinchot, " Primer of Forestry." Farmers' Bulletin 173, U. S. Depart- 

 ment of Agriculture. 



