c. Stocks of gas on hand. It is not possible from the information available to make an estimate of the amounts of war gas Japan may have on hand. The chemical industry has developed rapidly since 1918 and it is possible that considerable stocks of gas are on hand in rear and home depots. It is, however, considered more probable that the Japanese have largely discounted the possibility of the Allies initiating gas warfare, and consequently have not built up extensive stocks. d. New war gases available.