Note {223} — Chapter II · ON THE VARIATION OF ORGANIC BEINGS IN A WILD STATE; ON THE NATURAL MEANS OF SELECTION; AND ON THE COMPARISON OF DOMESTIC RACES AND TRUE SPECIES
Reading edition
«Note in original.» Compare feathered heads in very different birds with spines in Echidna and Hedgehog. «In Variation under Domestication, Ed. ii. vol. II. p. 317, Darwin calls attention to laced and frizzled breeds occurring in both fowls and pigeons. In the same way a peculiar form of covering occurs in Echidna and the hedgehog.»
Plants under very different climate not varying. Digitalis shows jumps «?» in variation, like Laburnum and Orchis case—in fact hostile cases. Variability of sexual characters alike in domestic and wild.