Abstract
FROM the earliest days of civilization, wood has ranked as an important constructional material on account of the ease with which it is obtained and worked with the simplest tools, and because it combines in a striking degree a relatively high strength with moderately low density. The wide, and only partially controllable, variations in properties which it shares with other natural products have tended in recent years to place timber at a disadvantage in competition with a number of highly standardized constructional materials now on the market. Any decline in consumption due to this circumstance has, however, been more than offset by the development of new methods of manufacture which promise to overcome the difficulties caused by variation, and by the increasing use of wood in the preparation of paper pulp, cellulose, charcoal, and other substances. The more intensive utilization in these directions calls for a fuller understanding of the origin, composition and structure of wood, and Dr. Trendelenburg's book supplies an excellent introduction to the present state of knowledge in these fields.
Das Helz als Rohstoff
Seine Entstehung, stoffliche Beschaffenheit und chemische Verwertung. Von Dr. Reinhard Trendelenburg. Pp. 435. (München und Berlin: J. F. Lehmanns Verlag, 1939.) 14.50 gold marks.
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CLARKE, S. Das Helz als Rohstoff. Nature 144, 924 (1939). https://doi.org/10.1038/144924a0
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DOI: https://doi.org/10.1038/144924a0