i8o Bulletin 245, 



Formula for 100 Cubic'^Feet of Space. 



1 oz. Potassium Cyanide 98-100 per cent purity 



2 ozs. (fluid) Sulphuric acid 66° B test 



4 ozs. Water. 



For a room 10 x 10 x 8 ft. ,the following charge would be required: 

 ^ lb. Potassium Cyanide. 

 16 ozs. Sulphuric acid, i pint. 

 32 ozs. Water, i quart. 



