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Peas.—Will any one learned in Peas have the kindness to tell me whether Knight's Tall Blue and White Marrows were raised by Knight himself? If so, I presume that they are the offspring of the crosses described by him in the Philosophical Transactions for 1799.¹ I find that the name "Knight" tacked to a Pea is not a guarantee that the sort was of his production. I will beg permission to ask one other question. Has any one who has saved seed Peas grown close to other kinds observed that the succeeding crop came up untrue or crossed?² This certainly occurs rarely if ever; yet from what I have observed on the manner of fructification of the Pea, I should have expected that such crossing would occasionally happen, as in the case of Dwarf Kidney Beans, of which fact I gave a striking example in your Paper of October 25, 1857.³ Charles Darwin, Down, Kent.

¹ Knight 1799. See Correspondence vol. 10, pp. 510-11.

² Darwin discussed Knight's pea varieties in Variation 1: 326, 329-30, vol. 2: 129.

³ In fact 24 October, see Darwin 1857.