Various, Popular Science Monthly (1914)
“ German militarism realized that two great dangers might arise from these applications of saltpeter. In time of war the importation of saltpeter might be stopped by the navy of a foreign nation, and it might therefore become impossible to manufacture nitric acid and explosives. The feeding of the nation might be interfered with, inasmuch as the soil could not be properly fertilized, and hence could not produce sufficient food-stuff's. Therefore, it became imperative that the nation must become independent of the importation of saltpeter. ”
