Notes on Palæozoic Botany, extracted from Dana's Manual of Geology (Revised Edition). New York, 1874.

^{page 177 note 1} For previous notice see Geol. Mag., 1875, p. 44.

^{page 177 note 2} Geol. Mag. 1869, Vol. VI. p. 393, Pl. 11, 12, and 13.

^{page 177 note 3} Op. cit. Vol. VI. p. 534, Pl. 20.

^{page 178 note 1} “Some of the fossils, formerly regarded as indications of plants, are now believed to be worm-tracks or borings. But others show by their branching forms that they are true Fucoids.” Dana's Manual of Geology, Revised Edition, 1874, p. 169.

^{page 178 note 2} Monthly Microscopical Journ. vol. viii. 10 1872, pp. 160–172, pl. 31 and 32. See also Geol. Mag. 1873, Vol. X. p. 462, “Review of Fossil Botany.”

^{page 180 note 1} We cannot agree with Prof. Dana in speaking of Welwitschia as a Conifer. The order Gnetaceœ, to which it belongs, being separated by well-marked characters from the Coniferœ.

^{page 181 note 1} We are also requested to make the following corrections:

On page 3, 8 lines from top, for l–200,000th read 1–1200,000th.

On p. 129, 14 lines from top, for Petremitids read Pentremitids.

On p. 344, on Map, for 9 read 8, and for 8 read 9.