[Footnote 26: Dulong. Oersted, Lucas, Pontet; Ibid., p. 640.] [Footnote 27: Braconnot: Ann. Chim. Phys., 2, 3. 277. Stenhouse: Ann. Chim. Phann., 198, 166]. [Footnote 28: 3 Pflanzenstoffe, p. 412.] [Footnote 29: Lecocq: Braconnot: Pharmacog. Pflan, p. 693.] [Footnote 30: Gorup-Besanez.] [Footnote 31: Siebold and Brodbury: Phar. Jour. Trans., 3, 590, 1881, 326.] [Footnote 32: Wagner: Jour. Prakt. Chem., 58, 352. B. Peters, v. Gohren: Jahresb. Agric., viii, 114; ix, 105; v. 58. Ann. Jour. Pharm., 4, 49.] [Footnote 33: Dragendorff: Pharm. Zeitschr. Russ., xvii, 65-97.] [Footnote 34: Bonssingault: Ann. Chim. Phys., 2, 27, 315. Erdmann: Jour. Pract. Chem., 71, 198.] [Footnote 35: Die Pflanzenstoffe, p. 21.] [Footnote 36: Ibid.] [Footnote 37: Meehan: Proc. Acad. Nat. Sciences.] [Footnote 38: Different forms of flowers on plants of the same species. Introduction.] [Footnote 39: Meehan: Proc. Acad. Nat. Sciences.] [Footnote 40: H.C. De S. Abbott: Trans. Amer. Philos. Soc., 1886.] [Footnote 41: For further facts confirming this theory, see "Comparative Chemistry of Higher and Lower Plants." By H.C. De S. Abbott. Amer. Naturalist, August, 1887.] [Footnote 42: Different genera and species of the following: Ranunculaceae, Berberidaceae, Carophyllaceae, Polygalaceae, Bromeliaceae, Liliaceae, Smilaceae, Yuccas, Amaryllideae, Leguminosae, Primulaceae, Rosaceae, Sapindaceae, Sapotaceae] [Footnote 43: Kobert: Chem Ztg.] [Footnote 44: Compt. Rend., xciv, p. 1124.] [Footnote 45: Bul. de la Soc. Chim.] [Footnote 46: "Yucca angus." Trans. Am. Philos. Soc., Dec., 1885.] [Footnote 47: Botanical Gazette, October, 1886.] [Footnote 48: Borodin: Pharm. Jour. Trans., xvi, 369. Pax. Firemy: Ann. Sci. Nat., xiii.] [Footnote 49: H.C. De S. Abbott, Proc. Acad. Nat. Sciences, Nov. 30, 1886.] * * * * * NEW METHOD FOR THE QUANTITATIVE DETERMINATION OF STARCH. A.V. ASBOTH. The author maintains that unsatisfactory results are obtained in determinations of starch when the method employed is based upon the inversion of sugar, formed as an intermediate product, since maltose, dextrose, and levulose are partly decomposed by boiling with dilute acids. He proposes to replace the methods hitherto employed by one which depends upon the formation of a barium salt of starch, to which he assigns the formula BaO.C_{24}H_{40}O_{20}. This salt is sparingly soluble in water and insoluble in dilute alcohol. In making a determination a weighed quantity of starch is saccharified with water, then mixed with an excess of normal baryta solution, dilute alcohol added to make up to a certain volume, and, after the precipitate has settled, the excess of baryta is titrated back with acid. [Illustration: Titrating apparatus]