Fume was collected at Kilauea Volcano with equipment patterned after that used in industrial pollution studies. Particulates and some of the gases present were separated. The fume analyzed was collected from Halemaumau crater in a noneruptive state, from Mauna Ulu lave take with mild lave fountaining, and from vigorous but short-lived fountaining from fissures across the floor of Kilauea caldera. The chief components were SO2, SO4, Cl, Na, Ca, K, F, Mg, and Fe, in about that order of decreasing concentration. Content and order of abundance varied depending on the state of activity of the volcanic sources of the fume. Sulfur compounds were preponderant.