198 



(9) That under existing circumstances the manufacture of bleached soda pulp from the Tasmania!) 

 timbers would be too costly to afford a profit if the pulp were to be marketed as such. Stringybark affords 

 the lowest cost of production; Swamp Gum the highest of the four woods. 



(10) That the manufacture in Tasmania of the papers for which bleached soda pulp from Stringy- 

 bark is most suitable might be a profitable undertaking only under the most favourable circumstances. 



(11) That under conditions to be expected the manufacture of paper in Tasmania, utilising pulp 

 from the woods in question, would not be a profitable undertaking at the present time. 



(12) That the utilisation of Myrtle (or Beech), Swamp Gum, Blue Gum, and Stringybark for the 

 manufacture of wood pulp and parjer products in Tasmania is not a feasible business proposition under 

 existing circumstances. 



Bulletin No. 1 of the Department of Chemistry of South Australia is " An 

 Investigation into the Prospects of Establishing a Paper-making Industry in South 

 Australia," by W. A. Hargreaves (Appendices by J. C. Earl and D. C. Winterbottom), 

 Royal 8vo., pp. 56 (1916). A useful Bulletin, which scarcely touches upon Eucalyptus, 

 but useful for reference in this connection. 



Bulletin No. 11 of the Advisory Council of Science and Industry is entitled 

 " Paper Pulp : Possibilities of its Manufacture in Australia," compiled by Gerald 

 Lightfoot (1919). 



At p. 24 we have " Utilisation of Young Eucalypts," based on information 

 supplied by Mr. C. E. Lane-Poole, from experiments by M. Mathey, Conservator of 

 Forests at Dijon, France, on the wood of E. globulus grown in Spain. The wood 

 experimented on is comparatively young second growth, not mature timber as 

 experimented on by Mr. Surface in Tasmania. 



Then follow notes on " Investigations on Pulping Qualities of young Karri 

 Timber " (E. diversicolor), by Mr. J. H. Boas, of the Perth Technical School. His 

 experiments give comparative results of tests on trees 8, 15, or 20 years old, and on 

 mature trees. His experiments indicate that the best results, both in respect to yield 

 of pulp and consumption of soda and bleach, are obtained from trees about 8 years old. 



Mr. Boas' experiments are of a preliminary nature, but they hold out hope that 

 even if Mr. Surface's report on the timber of certain mature Eucalypts is of general 

 application, the results with second-growth or other young trees may be more favourable. 



Bulletin No. 19 (of the same series) by Mr. Boas is entitled " Wood Waste " 

 (1921), and it contains valuable information on the subject of Wood Pulp. 



For some information on Pulping Material, see the Report of the New South Wales 

 Forestry Commission for the year ending 30th June, 1919, p. 21. 



Heart-wood and Sap-wood. 



The living portion of the wood is known as Sap-wood or Alburnum, while the 

 dead portion is known as heart-wood or Duramen. Usually the heartwood and sapwood 

 differ in colour and otherwise, owing to the accumulation of excreta in the former j 



