[262] "If we keep in view the observations which have now been made, we shall not fail to recognise the leaf in all seed-vessels, notwithstanding their manifold forms, their variable structure, and different combinations."--(Goethe, 'Metam.,' Sec. 78.) Wolff, 'N. Comm. Acad. Petrop.,' 1766, xii, p. 403, expresses precisely the same opinion as to the nature of the seed-vessel. [263] 'El. Terat. Veg.,' p. 205. [264] 'Ann. Sc. Nat.,' 4th series, vol. ix, p. 209. [265] 'Adansonia,' iv, p. 70. A similar deviation has been observed by M. van Tieghem in the ovary of _Tropaeolum majus_, 'Bull. Soc. Bot. Fr.,' 1865, p. 411. [266] Planchon et Mares, 'Ann. Sc. Nat.,' ser. 5, vol. vi, 1866, p. 228, tab. xii. [267] 'Act. Acad. Nat. Cur.,' 22, 11. 1850, p. 543, t. v, vi. [268] 'Neue Denkschrift der allg. Schweiz. Gesellsch.,' band v. p. 9, tab. 3, 4. [269] 'Ann. Sc. Nat.,' 2 ser., vol. i, p. 308, pl. ix, c. [270] 'Adansonia,' vol. iv, pp. 159, 171. [271] 'Bildungsabweichungen,' &c., tab. iv, figs. 1, 2, 21, 28, 29, &c. [272] 'Bull. Soc. Bot. France,' viii, p. 395. [273] 'Notulae,' p. 125, atlas, pl. xxxv; and 'Journals of Travels,' 1847, p. 475, _Lonicera_. [274] 'Ann. Science Nat.,' 3rd ser., vol. ix, p. 86, tabs. 5, 6. [275] 'Comptes Rendus,' vol. xviii, March 25th, 1864, and 'Ann. Sc. Nat.,' 3 ser., vol. ii, p. 32. [276] 'Mem. Acad. Sc. Toulous.,' ser. 5, vol. iii. [277] 'Bildungsabweich. Pflanz. Famil.,' p. 89, tab. xi. [278] 'Bull. Soc. Bot. Fr.,' 1865, p. 411. [279] Translated in 'Ann. Sc. Nat.,' 4th series, t. xiv, p. 24. [280] The calyx is not unfrequently excepted. [281] 'Bull. Bot.,' t. i, p. 6. [282] Lindley, 'Theor. Horticult.,' ed. 2, p. 84, f. 17. [283] Gris, 'Bull. Soc. Bot. Fr.,' 1858, vol. v, p. 261, and 'Ann. Sc. Nat.,' ser. 4, vol. ix, p. 80. Planchon, 'Flore des Serres,' vol. i, 1856, p. 129. [284] 'Flora,' 1856, p. 711. [285] 'Theory of Horticult.,' ed. 2, p. 90, f. 25. [286] As considerable interest attaches to the "Plymouth strawberry," and very little is known of it in this country, or on the continent, the author gladly avails himself of this opportunity of inserting an account of it, for which he is indebted to the kindness of Dr. Robert Hogg.--The Plymouth Strawberry (_Fragaria vesca fructu hispido_) is a sort of botanical Dodo upon which many have written, and which few have seen. Many years have elapsed since it was first discovered; and although a century and a half have passed since there was any evidence of its existence, it serves still as an illustration for students in morphology of one of those strange abnormal structures with which the vegetable kingdom abounds.