18 FUTURE FORESTRY IN IOWA 



4. The dissemination of information throughout the State, re- 

 lating to the value of trees for protection against winds, erosion, 

 excessive run off, etc., also for showing the value of shelterbelts 

 or windbreaks in protecting farm crops, orchards, stock and the 

 home buildings. 



5. The publishing of reliable data relating to the destructive 

 influence of stock or fire, especially in young stands of timber or 

 those in which natural reproduction is being secured. 



6. Providing for the establishment of demonstration planta- 

 tions of considerable extent on areas which have value for com- 

 mercial forest plantations. 



7. Continuing investigations of trees suitable for commercial 

 plantings to show most productive rotation, returns which may 

 be expected, etc. 



8. Providing for investigations relating to the better market- 

 ing of forest products from the smaller woodlots. 



9. Providing for a better utilization of forest products 

 through preservative treatment of posts, poles, railroad ties and 

 other products, and by eliminating waste in manufacture. 



10. Instituting investigations for providing better legislation 

 relating to the control of timber areas which affect the State or 

 communities as a whole. 



