ISTRY : Organic, Heterocyclic.) BIBLIOGRAPHY.-R. Wolffenstein, Die Pflanzen-Alkaloide (i92 2 ) ; Bibliography.-R. Wolffenstein, Die Pflanzen-Alkaloide (i92 2 ) ; T. A. Henry, The Plant Alkaloids (1924) ; A. R. Cushny, Pharma cology and Therapeutics or the Action of Drugs (1924); G. Trier, Die Alkaloide (1927); Allen's Commercial Organic Analysis (1927, sth ed.) ; A. J. Clark, Applied Pharmacology (1927). See also Annual Re ports on the Progress of Chemistry; Annual Reports of the Progress of Applied Chemistry; and the current editions of the pharmacopoeias of Germany, Great Britain and the United States. (T. A. H.)