216 TIMBER 



karri being capable of withstanding the teredo, neither 

 timber will do so in situations where the worm is very 

 active, and in some marine works in the Australian colonies 

 and elsewhere has had only a very short life. Jarrah is 

 superior for resisting the sea worm to karri, and at Hartle- 

 pool and other places in Great Britain jarrah has withstood 

 the attacks of the limnoria for ten to twelve years in a 

 situation where pine timber would have been destroyed, 

 but at Singapore jarrah piles were nearly eaten through in 

 eighteen months. Both timbers are liable to shrinkage, 

 the trouble with all hardwoods, and those of Australia 

 particularly, and they require long seasoning. Many of 

 the jarrah and karri logs set to the English market 

 split very badly at the ends unless kept in water, and this 

 applies more or less to all Eucalyptus timber. (See Figs. 

 31 and 32.) 



Tuart (E. gompliocephala), a cream-coloured wood of 

 great strength, density, and hardness, often interlocked in 

 grain, has its annual rings close and distinct. The supplies 

 are small and it is not much known out of the colony. It 

 is used in the framework for railway wagons and buffers, 

 where it has proved satisfactory ; also for shafts, felloes, 

 and wheelwrights' work generally, and where great strength 

 and hardness is necessary. Not much definite information 

 as to its durability is obtainable. Grows to a height of 

 150 ft. and 3 ft. diameter. 



Weight about 70 Ibs. per cubic foot when fairly seasoned 

 and 60 Ibs. when dry. 



Wandoo (E. redunca) (Fig. 33), better known locally as 

 white gum, grows to an average height of 60 ft. to 80 ft. 

 The timber is brownish red in colour, very hard, dense, 

 strong and durable. The annual rings close arid distinct, 



