Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 679
a a … Fig. 492.—Transverse section of afossil wood, showing the medullaryrays, a, a, a, a, a, a, running nearlyparallel to each other, and theopenings of large ducts in the midstof the prosenchymatous tissue. Fig. 498.—Vertical (tangential) sec-tion of the same wood, showing theprosenchymatous cells…
Microscopy
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