(1) That Nobbe does _not_ specify _which_ colours he crossed together, beyond the fact that _white_ was crossed with each fertile form. The _crimson_ form (_Karmoisinfarbe_), being double to the point of sterility, was not used. There remain then, white, carmine, and two purples (violet, “dark blue”). When _white_ was crossed with either of these, Nobbe says the colour becomes _paler_, whichever sort gave the pollen. Nobbe does not state that he crossed _carmine_ with the purples. (2) Professor Weldon gives no qualification in his version. Nobbe however states that he found it very difficult to distinguish the result of crossing _carmine with white_ from that obtained by crossing _dark blue or violet with white_[130], thereby nullifying Professor Weldon’s statement that in every case the cross was a simple mixture of the parental colours--a proposition sufficiently disproved by Miss Saunders’ elaborate experiments. [130] “_Es ist sogar sehr schwierig, einen Unterschied in der Farbe der Kreuzungsprodukte von Karmin und Weiss gegenüber Dunkelblau oder Violett und Weiss zu erkennen._” (3) Lately the champion of the “importance of small variations,” Professor Weldon now prefers to treat the distinctions between established varieties as negligible fluctuations instead of specific phenomena[131]. Therefore when Correns using “_yellowish white_” obtained one result and Nobbe using “_white_” obtained another, Professor Weldon hurries to the conclusion that the results are comparable and therefore contradictory. Correns however though calling his flowers _gelblich-weiss_ is careful to state that they are described by Haage and Schmidt (the seed-men) as “_schwefel-gelb_” or sulphur-yellow. The topics Professor Weldon treats are so numerous that we cannot fairly expect him to be personally acquainted with all; still had he _looked_ at Stocks before writing, or even at the literature relating to them, he would have easily seen that these yellow Stocks are a thoroughly distinct form[132]; and in accordance with this fact it would be surprising if they had not a distinctive behaviour in their crosses. To use our own terminology their colour character depends almost certainly on a _compound_ allelomorph. Consequently there is no evidence of contradiction in the results, and appeal to ancestry is as unnecessary as futile. [131] See also the case of _Buchsbaum_, p. 146, which received similar treatment. [132] One of the peculiarities of most _double_ “sulphur” races is that the singles they throw are _white_. See Vilmorin, _Fleurs de pleine Terre_, 1866, p. 354, _note_. In _Wien. Ill. Gartenztg._ 1891, p. 74, mention is made of a new race with singles also “sulphur,” cp. _Gartenztg._ 1884, p. 46. Messrs Haage and Schmidt have kindly written to me that this new race has the alleged property, but that six other yellow races (two distinct colours) throw their singles white.