Note 236 — Chapter VII
Reading edition
Newberry (88) p. 82, Pl. XXI. There are some large specimens of this supposed alga in the National Museum, Washington; they are undoubtedly of the nature of rill-marks.
Reading edition
Newberry (88) p. 82, Pl. XXI. There are some large specimens of this supposed alga in the National Museum, Washington; they are undoubtedly of the nature of rill-marks.