ABSTRACT At the conclusion of the second article on Welwitschia mirabilis communicated by me to this Journal (vol. xxi, New Series, 1881, p. 571), a postscript was appended, which suggested a possible explanation of the discrepancy between my observations of the process of development of this remarkable plant, and those of M. Naudin, who communicated an account of the germination of the same plant to the ‘ Gardener’s Chronicle,’ August 13th, 1881. The origin of the discrepancy was, however, soon after explained by a second letter from M. Naudin, published in the ‘Gardener’s Chronicle,’ January 7th, 1882, which began as follows: “ I find that by an accident, the seedling which I took to be that of Welwitschia, having sown the. seed as such, and which I described in your columns (1881, vol. xvi, p. 217), is really not a Welwitschia at all; all my Welwitschias (true) died, & c.”