PRESIDENTIAL ADDRESS. 2 
23. Tuberculosis in Stock.—Special Committees are at 
work in each State. 
24. Native Grasses and Fodder Plants.—A Special Com- 
mittee, with headquarters in Sydney, has been established 
on an Interstate basis. 
25. By-products of Wool Scouring Industry.—A Special 
Committee is investigating this matter, especially with a 
view to dealing with the recovery of potash. 
26. Nitrogen Requirements of Australia——A Special 
Committee has been appointed to investigate this matter. 
The work is in progress. 
Ill. Work of Standing Committees :— 
1. Chemicals Committee——This Committee has dealt 
with a large variety of important matters. Other prob- 
lems are now under investigation. 
2. Marine Biological Economics of Tropical Australia.— 
This Committee is dealing specially with Trochus and 
sponges. An expert sponge-fisher is to investigate the 
sponge beds near Cooktown. 
3. Metric System and Decimal Coinage.—Work is in pro- 
oTess. 
4. Seed Improvement.—This Committee has been estab- 
lished to undertake the examination, comparison, classi- 
fication and production of identification keys, to different 
varieties of cereals. 
IV. Investigations by Organisations other than Special or 
Standing Committees :— | 
1. Society of Chemical Industry of Victoria.—A grant 
has been made to defray the expenses of work on the 
standardisation of chemical analysis. 
2. N.S.W. Pastoral Committee on the Blow-Fly Pest— 
A grant has been made to assist this Committee in its in- 
