Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 458
e of the pith with that EXOGENOUS STEM:—MEDULLAET EATS. 435 of the bark, and dividing each ring of wood into wedge-sliapedsegments, are thin plates of cellular tissue (Fig. 165, c,c), notusually extending to any great depth Fig. 170, in the verticaldirection. It isnot often, how-ever, that… … Portion of transverse section of large stem ofConiferous Wood (fossil), showing- part of twoannual layers, divided at a, a, and traversed byvery thin but numerous MeduUary Eays. Fig. 171
Microscopy
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