XXVI.] 
JARRAH. 
i93 
India Company’s pilot brig ‘Salween,’ taking in a cargo 
of Jarrah at Bunbury. This was supplied by Mr. W. 
Pearce Clifton, and the vessel was sent at my instance 
in order to a series of trials of the wood in the Kidder- 
pore dockyard. These trials, I regret to say, were not 
favourable to the character of the wood, and the result 
was that no further supply was ordered. 
“ When last at Calcutta I obtained the sanction of the 
Government of Bengal to further tests of the wood, the 
greater portion of the ‘ Salween’s ’ cargo being then still 
in store, but I am sorry to say that the result was not 
more favourable than before.” 
The clerk of works at Freemantle reporting summarily 
upon the opinions expressed by the ship-builders and 
others, says : 
“ The sound timber resists the attack of the ‘ teredo 
navalis ’ and ‘white ant.’ On analysis by Professor 
Abel, it was found to contain a pungent acid that was 
destructive to life. The principle, however, was not 
found to be present in the unsound portions. Great care 
is therefore necessary in preparing the wood for use by 
ditching the log so as to cut all the defective portions of 
the heart out, and using only the perfectly sound timber. 
Fig. 25 will show the mode of 
ditching, so as to retain the 
sound wood in any required size 
for all practical purposes, ABC 
DEF being ditches. Very much 
has been said about Jarrah being 
subject to split when exported 
to India or England in log. It 
must be borne in mind that its 
density renders seasoning very F1G - 2 5 - 
slow, and that the inner portions of the larger trees are in 
0 
