Show HOW TO TEST LINSEED OIL there Is nothing that will maka ina paint go wrong on the house more quickly than poor oil it Is as bad in its way as adulterations adulte rations in the white lead petroleum Peir oleum oil cheap chea eners may be detected by placing a drop of 0 the oil on a black painted surface it if one sees the characteristic iridescence or play of bolois which kerosene exhibits it 13 1 evidence of adulteration corn and fish oil can be detected by the smell adulteration in white lead can best be disco discovered ered by the use of a blow pipe which national lead company will send with instructions free to anyone interested in paint address national lead company woodbridge building new york |