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| Keywords: The Oak (Marshall Ward) Fig 26.jpg en Fig 26 ”Photograph of the transverse section of a log of oak about one sixth natural size The cortex and bark are removed and the outline is bounded by the cambium The pith appears as a mere dot in the center; the medullary rays radiate from this and the annual rings about forty in number are arranged concentrically around it A large crack has formed along the plane of a medullary ray as the section dried Müller 1892 The Oak A Popular Introduction to Forest-Botany H Marshall Ward PD-old-100 The Oak Marshall Ward | ||||
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