DEPARTMENT OF AGRICULTURE. 
FORESTRY DIVISION. 
Bulletin No. 1. 
R E P O K T 
Relation i Railiioajis to Forest Suppiies m Forestry: 
TOGKTHEK WITH 
APPENDICES 
ON THE 
STRUCTURE OF SOME TIMBER TIES, THEIR BEHAVIOR, AND THfi CAUSE 
OF THFIR DECAY IN THE ROAD -BED ; ON WOOD PRESERVATION; 
ON METAL TIES; AND ON THE USE OF SPARK ARRESTERS. 
COMPILED BY THE CHIEF OF THE FORESTRY DIVISION. 
WASHINGTON: 
GOVERNMENT PRINTING- OFFICE. 
1S87. 
