File:The Oak (Marshall Ward) Fig 29.jpg
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English: Fig. 29.—A small piece of one annual ring of old oak wood (magnified twenty diameters): a, boundary of the autumn wood of the preceding (older) ring; b, that between the zone shown and the next youngest ring. In the annual ring shown the spring wood begins with large vessels, c and d, some with tyloses, d, in them, and passes gradually into autumn wood, with smaller vessels, e, e, and more tracheids and fibers, g. Only small medullary rays, i, are shown. (Hartig.) |
| Date | |
| Source | The Oak: A Popular Introduction to Forest-Botany |
| Author | H. Marshall Ward |
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.  You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
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| current | 14:37, 4 August 2012 | | 833 × 690 (109 KB) | Keith Edkins (talk | contribs) | == {{int:filedesc}} == {{Information |Description={{en|1=Fig. 29.—A small piece of one annual ring of old oak wood (magnified twenty diameters): ''a'', boundary of the autumn wood of the preceding (older) ring; ''b'', that between the zone shown and ... |
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