A preliminary examination of so-called cannel coal from the Kootenai of British Columbia
By: By D. P. Penhallow
Published: 1892
Place of publication: Minneapolis
Language: eng
Number of pages: 339
Subjects: Paleobotany
Notes: The specimens were made up of rod-like bodies which, in their interior, show tubular and branching openings strongly suggestive of vegetable growth.

Reprinted from the American Geologist, v. 10, December 1892, pages 331-339.