INDO-MALAYAN WOODS. 
441 
K. & V. Koorders, S. H., and Valeton, Th. Bijdrage tot de kenniss der Boom- 
soort.en op Java. Batavia (1894-1909). 
Janssonius, H. H. Mikrographie des Holzes. Leiden, 1906-. 
Two parts already issued. 
Descriptive Catalogue of Woods. London, 1852. 
Beecari, 0. Nelle foreste di Borneo. Florence, 1902. 
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Beecari. In Malpighia, 1902. 
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Berlin, 1888. 
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lated by Andrew L. Winton, Ph. D., with the collaboration of Kate 
G. Barber, Ph. D. New York, 1907. 
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Janssonius 
Iloltzapffel 
Beec. 
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Winton 
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Sp. gr. 
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Cing. 
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seille, 1907. 
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Philippine. 
* PTERIDOPHYTA. 
The only use to which members of this group are put as timber seems 
to be in the occasional use of the trunks of tree ferns as the corner posts 
of native houses. This is reported from Benguet in northern Luzon 
and from New Guinea. Such a use could only be very local, where tree 
ferns were very abundant or where other timber was scarce. The con- 
venient size and location of these stems will probably - account for 
their use. 
Among the Bagobos, on the east slope of Mount Apo, in Mindanao, the 
tree ferns are used very extensively, in preference to other woods. They 
are said to be very durable; and, certainly, their shape is such as to 
make it possible to utilize them with very little effort. 
GYMNOSPERMS. 
This group, which contains the coniferous trees, furnishes the greatest 
part of the timber supply of the world, but it is only scantily represented 
in the eastern tropics. There are a few representatives which are used 
to some extent, as the Benguet pine of northern Luzon, the pines and 
cedars of the Himalayan slopes and some of the species of Podocarpus, 
which are rather widely distributed. However, none of these are used to 
such an extent as to be of very general interest in this region. Wherever 
met with, the wood may be readily distinguished by its nonporous 
structure. 
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