Show HOW TO TEST LINSEED OIL thero there Is nothing that will malie make paint go wrong rong on the house more quickly than poor oil it la Is as bad la in its way as adulterations adulte rations la in the white lead petroleum oil chea peDers may be detected by placing a drop of the oil on a black painted surface it if one sees the iridescence or play of color colon which kerosene exhibits it Is evidence of adulteration corn cora and flah fish oil can be detected by the smell adulteration in white lead can best be discovered by the use of a blowpipe which national lead company will III send with instructions free to anyone interested in paint address national lead company woodbridge building new york |