RECORD: STRUCTURE OF CERTAIN WOODS 273 
SUMMARY 
Storied or tier-like arrangement of part or all of the elements 
is characteristic of many dicotyledonous woods representing a 
wide range of natural orders and families. Thestoried structure 
is found also in the secondary phloém 
The structure is exhibited on longitudinal sections, typically 
the tangential, as fine transverse striations (‘‘ripple marks’’). 
These are often visible without a lens. 
‘‘Ripple marks” are constant enough in stems of considerable 
thickness to serve as a valuable diagnostic feature. 
In some woods pit areas on the fibers are in seriation. In 
some instances, also, the cells of the wood parenchyma strands 
are arranged in a secondary seriation, visible under the lens. 
A table is appended giving for each wood the various elements 
storied, the uniformity and distinctness of the markings, and the 
height of the tiers. 
LITERATURE CITED — 
Héhnel, Franz, Ritter von. Uber stockwerkartig aufgebaute Holz- 
korper. Ein Beitrag zur Holzanatomie. Sitzungsb. math.-naturw. 
Cl. Akad. Wissens. Wien 89': 30-47. 84. 
Ueber den etagenférmigen Aufbau einiger Holzkérper. Ber. 
-_ 
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2. 
Deutsch. Bot. Ges. 2: 2-5. 188 
3. Jaensch, Th. Zur Anatomie einiger Leguminosenhdlzer. Ber. 
‘Deutsch. Bot. Ges. 2: 268-292. pl. 5. 4. 
4. Saupe, A. Der anatomische Bau des Holzes der Leguminosen 
und sein systematischer Werth. Flora 70: 259-268, 275-282, 307— 
922;°323-435- 1867. 
5. Wiesner, Julius. Die Rohstoffe des Pflanzenreiches 2. Leipzig. 
.: 9904. 
6. Solereder, Hans. Systematic anatomy of the Dictoyledons. Eng- 
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re , J. W., & Janssonius, H. H. Mikrographie des Holzes der auf 
te vorkommenden Baumarten. Leiden. Band I, 1906, Band 
IT, 1908. 
. Record, Samuel J. Tier-like arrangement of the elements of certain 
woods. Science II. 35: 75-77- I912- 
. Stone, Herbert, & Freeman, W.G. The timbers of British Guiana. 
London. 1914. 
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