203 



In G. A. Julius' ' Western Australian Timber Tests, 1906,'' which embodies 

 the physical characters of the timbers of that State (and some others), in Schedule I 

 we have — 



Name of Timber. 



Local Name. 



ISotanical Name. 



Where crown. 



Specific Gravity, &o. 



Weight in lb. per cubic foot. 



Moisture when 

 Green. 



Average 



when 



First Cut- 



Average of 



12 percent 



Moisture 



Per cent. 



of Drv 



Weight. 



Average 

 Dry 



Weight. 



Per cent. 



of 



Total 



Weight. 



Per cent. 



of 



Dry 



Weight. 



Jarrah 

 Karri 



Tuart ... 

 Wandoo ... 

 Blackbutt 

 Red Gum 

 Yate 



York Gum 

 Salmon Gum 

 Morrell . . . 

 Ironbark 

 Tallow-wood 

 Blackbutt 

 Spotted Gum 

 Flooded Gum 

 Grey Gum 

 Grev or Wh: 



Box. 

 Red Gum 

 Blue Gum 

 Stringvbark 



te 



E. marginata ... 



E. diiersicolor ... 



E. gomphocephala 



E. redunca 



E. patens 



E. calophijlla ... 



E. cornula 



E. loxophleba (fcecunda) 



E. salnwnophloia 



E. longicomis ... 



E. paniculata, crebra, &c 



E. microconjs ... 



E. pHidaris 



E. maculala 



E. saligna 



E. propinqva, &c. 



E. hemipMoia ... 



E. rostrala 

 E. globulus 

 E. obliqua 



W.A. 



68 



55 



48 



33 



,j 



72 



58 



50 



35 



jj •• ■ 



78 



68 



60 



30 



,, .. . 



79 



71 



63 



22 



,) . . . 



69 



54 



46 



38 



17 *•• 



72 



56 



47 



43 



J) 



79 



71 



64 



24 



j, ... 



77 



67 



59 



23 



jj . . . 



70 



66 



60 



20 



)» ** * 



73 



64 



56 



23 



N.S.W. ... 



jj . . . 

 j, . . . 



j, . . . 



j ? • * • 



; j . . . 



76 

 74 

 66 

 67 



74 

 71 

 74 



71 

 63 

 57 

 60 

 63 

 65 

 68 



... 





Yic. 



65 



59 







Vic and Tas. 



67 



57 







j, ... 



64 



56 







50 

 54 

 43 

 28 

 61 

 75 

 32 

 30 

 25 

 30 



From the figures given in Schedule No. I the following deductions have been 



made : — 



.4. Specific gravity, and its relation to strength. 



The heaviest of the Western Australian timbers, and of all the Australian timbers of note, are Yate 

 and Wandoo, which when first cut both average 79 lb. per cubic foot, Tuart and York Gum following 

 closely with weights of 78 and 77 lb. respectively. 



When seasoned, i.e., at 12 per cent, moisture, Yate and Wandoo are still the heaviest, with Tuart, 

 York Gum, Salmon Gum, and Morrell following in that order. 



It has been stated that the weight and density of a seasoned timber is to a certain extent a measure 

 of its strength, and this is borne out in the case of Yate, which is the heaviest and very much the 

 strongest of the Australian hardwoods; and although Wandoo and Tuart do not come next in order of 

 strength, yet both are well to the front. 



It is more nearly correct, however, to state that, the greater the density, and therefore the weight, 

 the greater is the strength to resist compressive strain, whether applied edgewise or crosswise ; and this 

 is fully borne out by the results of the tests, in which the relative positions are, Yate, Wandoo, Morrelh 

 Tuart, Salmon Gum, and York Gum. 



