De, J. B. CLELAND. 
12. Control of Sparrow Pest.—Steps have been taken 
with a view to preventing this pest from reaching 
Western Australia. 
13. Alcohol Fuel and Engines.—A large amount of work 
has been done, and a comprehensive report published as 
Bulletin No. 6. 
14. Posidonia Fibre.—Investigations into the constitution 
of the fibre with a view to increasing its strength by chemi- 
cal treatment are practically completed. 
15. Grass Tree Resin.—Fundamental research into the 
composition of the resin is in progress, with a view to the 
commercial utilisation of the resin. Definite chemical 
substances have been isolated. 
16. Development of Mechanical Cotton Picker.—Inves- 
tigations are now in progress. Valuable results have been 
obtained. Arrangements are being made to grow cotton 
near Brisbane for the purpose of experimental picking by 
machine. 
17. Utilisation of Phosphatic Rock.—Investigations are 
now in progress. 
18. Life History of the Cattle Tick.—Investigations are 
in progress on the lines of the recommendations given on 
p- 17 of the Report of the Executive Committee. 
19. Substitutes for Tin Plate—The investigations are 
nearing completion. Very satisfactory results have been 
obtained. 
20. Commercial Utilisation of Kelp.—tInvestigations, 
specially in regard to the extraction of potash and iodine, 
are in progress at Hobart. 
21. Blow-Fly Pest in Queensland.—Investigations are in 
progress in collaboration with the State Government. 
22. Cold Storage Problems.—The Committee is engaged 
in devising a scheme for systematic investigation, especially 
in regard to the cold storage of fruits. 
