THE scarcity of potash compounds, of iodine, and of foodstuffs caused by the great war has directed increased attention to seaweeds during the past four years, and to the possible extension of the use of these as a source of such materials. For some years before the war the giant seaweeds of the Pacific Coast were tho subject of systematic investigation in the United States, especially with a view to their utilisation as a source of potash. After the outbreak of war, when many countries, including the United States and the countries allied against Germany, were cut off from their usual supplies of potash compounds from the German mines, examination began to be made of all sources from whfch potash might be obtained independently of Germany, and seaweeds came in for an increased amount of attention.
"Réflexions sur les Analyses Chimiqnes d'Algues Marines." Revus Gérnérale des Sciences, 29e Année, No. 19, October, 1918.