Subject ASC0000eva
Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature.
v. 4 (1868), Page 133 (1868)
MBLWHOI Library
BHL Page 1934875
Keywords
Diatom Perley's Meadow microscopic image Frustule linear sigmoid valve reflexed apices keel puncta striae American sub-peat deposits Dolgelly deposit Cwm deposit Bechan deposit Lough Mourne deposit diatom valve