FOREST DISEASE SURVEYS. 23 



SUMMARY. 



Forest disease surveys when carried out in conjunction with tim- 

 ber-survey projects will furnish data of economic value in conducting 

 future sales of the areas in question. 



Pathological maps indicating the principal infection areas can be 

 compiled from the data secured by these forest disease surveys. 



These maps will be found of practical value in the appraisal, mark- 

 ing, and general administration of the sale area. They will prove of 

 practical use in both artificial and natural reforestation and will also 

 prove useful in indicating the general distribution of forest-tree 

 diseases in our National Forests. 



WASHINGTON ; GOVERNMENT PRINTING OFFICE : 191S 



