213 



Ash Tests. 

 Cubes, similar to those used in the charcoal tests, were burnt in platinum crucibles. 

 The following table (Table 1) gives the weights of charcoal and ash produced from one ton of wood. 

 The third column is the weight of ash produced from one ton of charcoal. 







Weight of 



Weight of Ash 



Weight of Ash 



Botanical Name. 



Local Name. 



Charcoal 



from Wood 



from Charcoal 







in pounds. 



in pounds. 



in pounds. 



E. bicolor ... 



Black Box 



805 



1-340 



3-98 



E. rostrata ... ... ... 



Red Gum ... 



., 





696 



0-636 



2-05 



E. Stuartiana 



Apple Gum 







681 



7-280 



23-89 



E. sideroxylon 



Red Ironbark 







656 



0-957 



3-26 



E. hemiphloia 



Grey Bos ... 







656 



17-270 



60-03 



E. poli/anthema 



Red Box 







647 



4-150 



13-86 



E. macrorrhyncha ... 



Stringybark 







637 



0-668 



2-40 



E. melliodora 



Yellow Box 







631 



6-380 



22-70 



E. obliqua 



Messmate ... 







600 



0-718 



2-68 



E. globulus ... 



Blue Gum 







599 



5-216 



19-63 



E. amygdalina 



Pep permint 







593 



1-079 



4-23 



E. botryoides 



Gippsland Mahogany 







584 



2-300 



8-84 



E. euqenioides 



White Stringybark 







583 



0-291 



1-11 



E. Bosistoana 



White Box 







574 



17-158 



67-00 



E. Consideniana 



Yert Chuck- 







557 



0-980 



3-93 



E. viminalis 



White Gum 







539 



4-062 



17-63 



E. pulverulenta 



Woollybutt or mealy Stringy- 

 bark. 



463 



0-792 



3-96 



Calorimetric Tests. 

 Cubes, similar to those used above, were also adopted in these tests. A Berthelot-Mahler bomb 

 calorimeter was employed to determine the calorific values, which are here (Table 2) expressed in calories, 

 per gramme : — 







Calorific Value 



Calorific Value 



Botanical Name. 



Local Name. 



of 



of 







Charcoal. 



Wood. 



E. eugenioides 



. White Stringybark 





7,912 



4,680 



E. obliqua ... 



. Messmate 





7,901 



4,594 



E. melliodora 



. Yellow Box 





7,895 



4,693 



E. pulverulenta 



. Woollybutt or mealy Stringybark . 





7,853 



4,604 



E. rostrata 



. Red Gum 





7,842 



4,811 



E. rostrata 



. Red Gum 





7.018 



4.250 



E. macrorrhyncha 



. Stringybark 





7,839 



4,674 



E. Stuartiana 



. Apple Gum 





7,819 



4,703 



E. Consideniana ... 



. Yert Chuck 





7,802 



4,576 



E. viminalis 



. White Gum 





7,749 



4,670 



E. botryoides 



. Gippsland Mahogany 





7,758 



4,756 



E. globulus 



. Blue Gum 





7,736 



4,560 



E. amygdalina 



. Peppermint 





7,731 



5,099 



E. bicolor ... 



. Black Box 





7,610 



4,595 



E. liemifhloia 



. Grey Box 





7J052 



4,422 



E. Tpolyanthema ... 



. Red Box 





7,041 



4,828 



E. sideroxylon 



. Red Ironbark ... 





6,995 



4,528 



E. Bosistoana 



. White Box 





6,715 



4,431 





The numbers in italics represent the results of experiments on undried specimens,which contained 

 at least 12 per cent, of moisture, showing a reduction of the calorific value of charcoal by 10 per cent.j 

 and that of wood by 11-5 per cent. 



