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