No. of Copies issued, 1,000. 



DEPARTMENT OF AGRICULTURE, 

 NEW SOUTH WALES. 



SCIENCE BULLETIN, No. 4. 



A Modification of Marsh's Apparatus 

 for the Detection of Arsenic. 



BY 



LIONEL COHEN, 



Chemist's Branch. 



t 2929 



SYDNEY: WILLIAM APPLEGATE GULLICK, GOVERNMENT PRINTER. 



1911. 



