U .S. DEP ARTMENT OF AGRICULTURE. 



fokestry division. 



Bulletin No. 7. 



FOREST INFLUENCES. 



1. INTRODUCTION AND SUMMARY OF CONCLUSIONS. ByB. E. Fernow. 



2. REVIEW OF FOREST METEOROLOGICAL OBSERVATIONS: A STUDY 



PRELIMINARY TO THE DISCUSSION OF THE RELATION OF FOR- 

 ESTS TO CLIMATE. By M. W. Haurington. 



3. RELATION OF FORESTS TO WATER SUPPLIES. By B. E. Fernow. 



4. NOTES ON THE SANITARY SIGNIFICANCE OF FORESTS. By B. E. Fer- 



now. 



APPENDICES. 



1. DETERMINATION OF tHE TRUE AMOUNT OF PRECIPITATION AND ITS 



BEARING ON THEORIES OF FOREST INFLUENCES. By Cleveland 

 Abbe. 



2. ANALYSIS OF RAINFALL WITH RELATION TO SURFACE CONDITIONS. 



By George E. Curtiss. 



PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE. 



WASIimGTON: 



GOVERNMENT PRINTING OFFICE. 

 1893. 



