Show for extinguishing oil for extinguishing oil fires where her water ter Is both ineffective and dangerous ou s rothy frothy liquids have been lecorn mended in a late test near hamburg a mixture of one quart each of caustic soda and alum solutions yielded 15 quarts of a yellowish white foam hav ing a density of 0 14 and this could be sucked bucked up and distributed like wa ter by a hose A basement of 30 square feet filled with benzine to 20 inches was wag fired and was extinguished in 78 seconds with 18 gallons of the frothy mixture and a burning benzine tank six feet I 1 in diameter and nine feet high was extinguished in 13 seconds the benzine was little affected burning aa as usual after removal of the troth froth |