# DUAL PURPOSE TREES

DUAL PURPOSE TREES Produced: 1925 Description Shows proper and improper methods of "cupping" pine trees for turpentine. Emphasizes that only mature trees should be used, that slashes should be shallow, and that trees should be uncupped periodically to insure longer tree life and more productive turpentine yield. https://catalog.archives.gov/id/7216

- Kind: Educational
- Year: 1925
- By: National Archives
- Genres: Education
- Archive: [Internet Archive](https://archive.org/details/33-251)
- Licence or status: none stated by the archive
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/33-251?play=1)