DEPARTMENT OF AGRICULTURE. 
forestry division. 
Bulletin No. 1. 
REPORT 
ON THE 
Relation of Raiiroai to Foist Supplies ai Forestry: 
TOGETHER WITH 
APPENDICES 
OX THE 
STRUCTURE OF SOME TIMBER TIES, THEIR BEHAVIOR, AND THE CAUSE 
OE THEIR DECAY IN THE ROAD-BED; ON WOOD PRESERVATION; 
ON METAL TIES; AND ON THE USE OP SPARK ARRESTERS. 
COMPILED BY THE CHIEF OP THE FORESTRY DIVISION. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1887. 
