Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 426
less intensity,varying from a light chestnut, in individual specimens, to a shadealmost approaching black in the aggregated masses. Their presencemay often be detected without the aid of a microscope, by theabsence, in many species, of the fibrous tenacity which distin-guishes other plants : when… … Fossil Diatomacece, &c, from Mourne Mountain, Ireland:—0,0,0,Gaillonella (Melosira) procera, and G. granulata ; o, d, d, G. biseriata(side view) ; b, b, Surirella plicata ; c, S. craticula ; /.% S. caledonica;ey Gomphonema gracile; /, Cocconema fusidium; g, Tabellaria vul-garis ; h, Pinnularia…
Microscopy · Biology
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