[167] 'Ann. Scienc. Nat.,' 3rd series. 1853. vol. xix, p. 251, tab. 14.
[168] Carrière, 'Revue Horticole.' 1868, p. 184.
[169] 'Gard. Chron.,' 1858, p. 556.
[170] 1863, p. 556, &c.
[171] 'Ann. Nat. Hist.,' 1845, vol. xvi, p. 355.
[172] See also Lindley, 'Veg. Kingd.,' p. 109 et 116a, where the views of Raspail, R. Brown, Mohl, Henslow, and others, are discussed.
[173] It has been observed that if a plant is supplied with copious nourishment the flowering-period is delayed; but that moderate or even scanty nourishment accelerates it. Goethe, 'Metam.,' § 30. See also Wolff, 'Theoria Generationis,' 1759; Linn. 'Prolepsis,' §§ 3 and 10.
[174] Moquin-Tandon, p. 384; also Lindl., 'Elements of Botany,' p. 65, fig. 130; "Theory of Horticulture," p. 86. 'Gard. Chron.,' 1851, p. 723; Irmish, 'Flora,' 1858, p. 38, &c.
[175] Caspary, 'Bull. Soc. Bot. Fr.,' vol. vi, 1859, p. 235; also Payer, ibid., vol. i, 1854. p. 283.
[176] Trécul, 'Ann. Sc. Nat.,' 2nd ser., vol. xx, p. 339.