The patterns of iron oxide deposited from a suspension have been studied on both the cold-drawn and annealed ferromagnetie substances. Three types of patterns on iron and two on nickel are found. They are all similar to, but less regular than,those found on monocrystal specimens. In the case of cobalt which is electrolytically deposited,the patterns consist of quite straight and nearly parallel lines having large spacing. After the specimen is quenched and then annealed, the patterns become highly irregular. A tentative explanation for each type of the patterns is given.