By the student of animal physiology such a change as above described--equivalent to the substitution of an ovary or a uterus for a testis--would be looked on as next to impossible; the simpler and less specialised structure of plants renders such a change in them far more easy of comprehension. Thalictrum minus. Delphinium elatum. Magnolia fuscata. Bocconia cordata. *Papaver bracteatum! * somniferum! nudicaule. Dionaea muscipula! Barbarea vulgaris. *Cheiranthus Cheiri! Cochlearia Armoracia. Tropaeolum majus. Citrus Aurantium. *Sempervivum tectorum! montanum. Begonia frigida! Cucumis, sp. Cucurbita Pepo. Pyrus Malus. Rosa arvensis! Saxifraga crassifolia! Myrtus, sp. Campanula rapunculoides. Polemonium caeruleum. Gentiana Amarella. *Erica Tetralix. Stachys germanica. Primula acaulis. Rumex crispus. *Salix, sp. plur.! Euphorbia esula. Glochidion. Asphodelus ramosus. Amaryllis. Lilium tigrinum! longiflorum. *Tulipa Gesneriana! var. cult. plurim.! Hemerocallis. Zea Mays. Bambusa, sp. =Pistillody of the ovule.=--An instance of this extraordinary transformation in the carnation, as observed by the Rev. Mr. Berkeley, is given at p. 268. FOOTNOTES: [295] 'Neue Denkschrift. Schweiz. Gesellsch.,' band v, p. 9. [296] 'Bull. Acad. Belg.,' xix, part 2, p. 93. [297] Schlechtendal, 'Linnaea,' ix, p. 737. [298] Misbilld., 'Cult. Gewachs.,' p. 32. [299] Linn., 'Phil. Botan.,' Sec. 120. [300] 'Bull. Soc. Bot. France,' 1859, vol. vi, p. 199. [301] Seemann's 'Journal of Botany,' vol. iii, p. 105; also Morren, 'Bull. Acad. Belg.,' vol. xx, part 2, p. 264. [302] Morren, 'Bull. Belg.,' xviii, p. 503. [303] 'Organ. Veg.,' t. i, p. 513. [304] 'Bull. Acad. Roy. Belg.,' tome xvii; and Lobelia, p. 65. [305] Masters, "On Double Flowers," 'Rep. Internat. Bot. Congress,' London, 1866. p. 127. [306] See also C. Morren, "Sur les vraies fleurs doubles chez les Orchidees," 'Bull. Acad. Roy. Belg.,' vol. xix, part ii, 1852. p. 171. [307] C. Morren, 'Bull. Acad. Belg.,' vol. xx, 1853, part ii, p. 284 (_Syringa_). [308] 'Rep. Bot. Congress,' London, 1866, p. 135, t. vii, f. 14.