Subject ASC00005oe

Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature.
v. 7 (1871), Page 202 (1871)
MBLWHOI Library
BHL Page 1634992

Keywords

Transverse section of a Calamite with its cortical layer surrounding the cylinder of woody wedges fossil plant botany fossil plants fossil calamite plant Calamite calamite coal formation

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