42 WATER SUPPLY FOR DOMESTIC USE, ETC. 



Evidence of a similar nature was given before the Com- 

 mission, and the conclusion which forces itself upon one is, that 

 the interpretation of water analyses must be arrived at gradually, 

 and that the safest way to secure immunity from waterborne 

 disease is to prevent the contamination of the water supply as 

 far as possible. This is in many cases more easily accomplished 

 and should be aimed at rather than purifying the water after 

 contamination. 



CONSTITUENTS OF RESIN OF AILANTHUS 

 IMBERBIFLOEA, TAR. MACARTNEYI. 



By JOSEPH LAUTERER, M.D. 



[Read before the Royal Society of Queensland, February 16, 1895.^ 



[The matter contained in this paper is included in a Bulle- 

 tin shortly to be issued by the Department of Agriculture.] 



