The elements of materia medica and therapeutics . his work, I have met with S. E. Sarphatis Commen-tatio de lodio, Lug-duni, ]835, which contains the most extensive list of natural bodies containingiodine, of any work with which I am acquainted. Journ. de Pharmacie, tom. xxiii. for 1837, p. 29. Lond. and Edinb. Philosoph. Mag. for Nov. 1839. Edinburgh New Philosophical Journal, vol. i. p. 159. Phil. Trans. 1830, Part 2, p. 223. 5 Gairdner, Essay on the Natural History, Origin, Composition, and Bledicinal Effects of Mineraland Thermal Springs, p. 27, Edinb. 1832. y Gmelin, Handbuch der Chemie,
The elements of materia medica and therapeutics . his work, I have met with S. E. Sarphatis Commen-tatio de lodio, Lug-duni, ]835, which contains the most extensive list of natural bodies containingiodine, of any work with which I am acquainted. Journ. de Pharmacie, tom. xxiii. for 1837, p. 29. Lond. and Edinb. Philosoph. Mag. for Nov. 1839. Edinburgh New Philosophical Journal, vol. i. p. 159. Phil. Trans. 1830, Part 2, p. 223. 5 Gairdner, Essay on the Natural History, Origin, Composition, and Bledicinal Effects of Mineraland Thermal Springs, p. 27, Edinb. 1832. y Gmelin, Handbuch der Chemie, Bd. i. S. 350. ? Dulk, Die Preussische Pharmakopue, Bd. i. S. 583. Leipzig-, 1829; and British and Foreign Medi-cal Review for Januai-y, 1838, p. 163. ^ Journ. de Pharmacie, tom. xxiii. p. 501. IODINE. 233 F. serratus, and F. nodosus j (fig. 47, a, b, c.) Laminaria saccharina, and (fig. 47, d) j Halidrys siliquosa j Chorda Filum ; Gelidium cartilageneum ;Halyseris polypodioides j Phyllophora rubens ; Rhodomenia palmata ; Ulva Lima ;. a. Fucus vesiculosus. b. F. nodosus. c. F. serratus. d. Laminaria digitata. Porpliyra umbilicalis ; Padina Pavonia; Gigartina Helminthocorton, and some ofthe marine Confervae. The following tahle, drawn up hy Mr. Whitelaw, a manufacturer in Glasgow,from his own experiments, shows the proportion of iodine contained in someof the most common Algee on our sea coasts :— Ratios of Iodine. Laminaria digitata 100 Laminaria bulbosa 65 Laminaria sacclaarina 35 Ratios of Iodine. Fucus serratus 20 Fucus bulbosus 15 The quantities of chloride of potassium in those Algae follow nearly the sameratio^. Professor Graham states that, according to Mr. Whitelaw, the longelastic stems of the Rhodomenia palmata aiford most of the iodine contained inkelp. It has been found in several species of pheenogamous plants, as Znsteramarina, and, more recently, in two growing in Mexico ; namely, a species ofAgave, and one of Salzola. Preparation.—British Iodine is
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