Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 513
P … Fig. 262.—Transverse section of a Fossil Wood; showingthe Medullary Rays, a, a, «, a, a, a, running nearly parallelto each other, and the openings of large Ducts in the midstof the woody fibres. Fig. 263. Vertical (tangential) section of the same wood;showing the Woody fibres separated by the…
Microscopy · Biology
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