CATALOGUE OF THE TIMBERS OF THE WORLD 103 



Jackwood. Artocarpus integrifolia, Linn, f. Weight, 40 lbs. (Gamble). 

 India. 



The wood is of a brilliant orange or gamboge colour, not unlike that 

 of the ossage-orange {Madura aurantiaca, Xutt), ^\•ith a strongly -marked 

 contrary hard and soft grain which requires a very sharp tool to obtain 

 a smooth surface. It is not much used in the United Kingdom, but 

 is largely utilised in India for all decorative and carpenters' work, for 

 turning and inlay, and also for brush backs. It is reported as darkening 

 to a mahogany colour with age and exposure to light. 



The pores, which are numerous and rather large, are grouped in wavy 

 bands, and are generally filled ^^•ith a bright, sparkhng gum. The medul- 

 lary rays are very bright and well defined, parallel but not regular. On 

 the tangential section they show strongly in numerous straight, light 

 Unes at right angles to the longitudinal grain. 



Jamba. Xylia xylocarpa. Gamble gives the weight as varying from 

 57 to 61 lbs. The Indian Peninsula. 



This is the Indian species of Xylia, which until recently was regarded 

 as identical with the Burmese p}inkado {X. dolahriformis, Benth.). 

 Jamba is found in many parts of the Indian peninsula, being commonest 

 on the west coast. The tree does not reach so large a size as Burmese 

 pyinkado, and the timber is superior in quality to that species, but it 

 tends to split in seasoning. 



Jarana Preta. Source unknown. Weight, 69 lbs. 7 oz. Brazil. 



This hard, heavy wood is very Uable to spHt ; it has somewhat the 

 grain of greenheart. The colour is yellow-brown, alternating with a salmon 

 shade in light and dark streaks. It takes a very smooth surface from 

 the tool, and its qualities suggest that it would be useful for fishing-rods, 

 walking and umbreUa sticks. The transverse grain shows Uke a dark- 

 coloured pine {Piniis sylvestris). The wood has a distinctly unpleasant 

 smell. 



The pores are irregular, small, and mostly filled with gum or oil. 

 The medullary rays are clear and strongh' defined, joined at right angles 

 by very distinct and fine, similarly coloured Hues making a kind of honey- 

 comb pattern. 



Jarrah. Eucalyptus marginata, Sm. Weight, 57 lbs. Western 

 Australia, New Zealand. 



The wood is of a bright brick-red colour and of close texture, with 

 intersvoven grain occasional!}^ figured Hke mahogany. In general 

 appearance it ver}^ much resembles karri, and great difficulty has been 

 experienced in distinguishing between them. A simple means of achieving 



