17. B. sumatrana (Sumatra) 
Durable to insect attacks, and, therefore, valuable for 
beams in houses. 
18. 4£. symplocoides (Malay Peninsula) 
W ood with close grains, light fawn in color, with dis- 
tinct rings, rays rather distant and broad, pores small 
and few. 
19. B. Wallichti (Malay Peninsula) 
Trunk 12-20 m. tall; wood red, suitable for beams. 
because it is durable. 
20. 2. Wrayt (Malay Peninsula) 
According to Burkill, the timber is good for house 
posts. 
An extensive study of the wood structure of Baccaurea 
has been carried on by Janssonius (1929, 1984); a sum- 
mary of the results follows: 1. Most of the wood con- 
sists of non-septate libriform fibres with very thick walls 
and a minute cavity. 2. Metatracheal parenchyma abun- 
dant, sometimes as nearly the same mass as the libriform 
fibres. 3. Vessel perforations in part to exclusively scala- 
riform, often varying within the genus. These characters 
are very important taxonomically (Janssonius, 1929). 
A new and promising prospect has also been brought 
out by Janssonius’ study: that the wood of 2. racemosa 
(quite probably also the other species) is suitable for paper 
pulp. The technical properties of a good pulp wood, i.e., 
great length of fibre, minimum content of gum and resin, 
ease of pulping and bleaching, light color—these are well 
met by 2B. racemosa. The time needed for macerating 
the wood is also short (one sixth of the time usually re- 
quired for other woods); the color disappears quickly and 
completely; and the fibre walls are readily de-lignified. 
Further details of this process are given in V'ropical 
Woods, 18: 1-8, and in Mikrographie des Holzes. In 
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