England, China, and Brazil. The imports of white arsenic at the eastern, Gulf, and Lake ports exceeded those at ports on the west coast. Notwithstanding the predictions of brokers early in the year, higher prices did not stimulate the accumulation of additional SUl)plies from foreign countries. Imports of arsenic sulphide amounted to lO86 short tons, valued at $265,861. The total white arsenic bought for consumption in 1923 from domestic and foreign sources was about 22,ooo tons, less than one-third of which was made into calcium arsenate, and the remainder was made into other insecticides, weed killer, and cattle dip, or used by glass manufacturers.
Eight producers in the United States reported the production of arsenic. Three smelting companies contributed 9 ยฐ per cent. of the total output of arsenic. Lead smelters made fully 8o per cent. of the total smelter output of arsenic. About half the total domestic output was made from charges of regular furnace ore at the smelters, and 4o per cent. came from arsenical ores and speiss purchased. Nearly IO per cent. of the total came from two plants that treat ore primarily for arsenic. Of the arsenic contained in ores melted in blast furnaces, probably 25 to 5o per cent. is saved. A larger recovery has been reported from plants that use direct roasting, where the fume is caught in "kitchens " and bag houses. If the future demand for arsenic warrants the expense of equipment, it may be found more profitable to treat arsenical ores directly. No new discoveries of arsenic ore were made in 1923.
H.L.