^{page 11 note 3} Arber, , Trans. Linn. Soc. London, 1907, ser. II, Bot., vol. vii, pt. vii, p. 109.Google Scholar

^{page 11 note 4} Schimper, & mougeot, , Monogr. Plant, foss. Vosges, 1844, p. 42. pl. xxi, figs. 1 and 2.Google Scholar

^{page 11 note 5} Arber, ibid., p. 115.

^{page 12 note 1} See Arber, ibid., p. 117.

^{page 12 note 2} see Arber, ibid., p. 115.

^{page 12 note 3} Compter, , Zeitsch. Naturwiss. Leipzig, 1894, vol. lxvii (ser. v, vol. v), p. 225, pl. iv, fig. 9.Google Scholar

^{page 12 note 4} Zeiller, , Élém. de Paléobotanique, 1900, p. 213.Google Scholar

^{page 12 note 5} Lignier, , Mém. Soc. Linn. Normandie, 1895, vol. xviii, p. 135, pl. vii, fig. 13.Google Scholar

^{page 12 note 6} No. in the Oxford University Museum.

^{page 12 note 7} Seward, , Jurassic Flora, vol. ii (Brit. Mus. Cat.), 1904, p. 114, text-fig. 11.Google Scholar

^{page 13 note 1} Schenk, , Palœontogr., 1869, vol. xix, Lief, i, p. 20, pl. vii fig. 4.Google Scholar

^{page 13 note 2} Zeiller, ibid., pp. 212–13.

¹ I take this opportunity of correcting two slips which appeared on p. 110, paragraphs 2 and 3, of my previous paper with regard to the horizons on which some of the earlier Cyeadophytean fronds occur in the Palæozoic rocks. I am indebted to Professor Zeiller for calling my attention to these errors. The oldest known specimens of Zamites, Plagiozamites, and Pterophyllum should there be stated to be derived from the Stephanian, and not from the Westphalian. Similarly, the beds in the Vosges from which Plagiozamites was obtained are of Permian age, and not Westphalian as stated. Professor Zeiller also informs me that the fossil recorded by Zalessky as Plagiozamites from Manchuria has proved to be a Rhacopteris. Professor Zeiller, in his “Bassin Houiller et Permien de Blanzy et du Creusot”, a memoir whieh I did not see until after my paper had appeared, includes the Zamites Planchardi of the Commentry Flora in the genus Plagiozamites. Consequently the genus Zamites is as yet unknown from the Palæozoic rocks, and it is doubtful if any typical representatives have been described of earlier age than the Rhætic.