. The pictorial sketch-book of Pennsylvania, or, Its scenery, internal improvements, resources, and agriculture, populary described . FIG. 1.—NEUEOPTERIS. nerve fern, which are plentifully distributed in the coal. Figure 2 is aspecimen of the odontopteris, or tooth-fern, not so numerous as theformer, but still characteristic of this formation. The next, Anom-opteris, are seldom met with, but nevertheless flourished in this era. A N T II II A C 1 T E COAL FORMATION 125.

---

Size: 1250px × 2000px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade, booksubjectminesandmineralresources