[2271] Geschichte der Chemie, iv. (1847) 392.
[2272] Botanische Zeitung, 1863.
[2273] Pringsheim, Jahrb. für wissenschaftl. Botanik. 1866.
[2274] Beiträge zur Pflanzenphysiologie, Leipzig, 1868. 119.
[2275] Botanische Zeitung, 1859. 329.
[2276] The account here given is taken from F. L. Olmsted’s Journey in the Seaboard Slave States, New York, 1856, p. 338, etc.
[2277] For further particulars, see Guibourt, Hist. des drog. ii. (1869) 259, also Curie, Produits résineux du Pin maritime. Paris 1874. 24 pages, 1 plate; Matthieu, Flore forestière 1860, p. 353.
[2278] For some particulars, see my notice in the Jahresbericht of Wiggers and Husemann for 1869, p. 36.—F. A. F.
[2279] Flückiger in loc. cit. 1867. 36.—Most chemists assign to this acid the formula C₂₀H₃₀O₂, and call it silvic acid.
[2280] Annual Statement of the Trade of the U.K. for 1872. pp. 53. 56. 60. 210.