[{231}] «Note in the original.» In case like mistletoe, it may be asked why not more species, no other species interferes; answer almost sufficient, same causes which check the multiplication of individuals.
[{232}] See Origin, Ed. i. pp. 104, 292, vi. pp. 127, 429.
[{233}] Recognition of the importance of minute differences in the struggle occurs in the Essay of 1842, [p. 8 note 3].
[{234}] See Origin, Ed. i. p. 90, vi. p. 110.
[{235}] These two forms of sexual selection are given in Origin, Ed. i. p. 87, vi. p. 107. The Guiana rock-thrush is given as an example of bloodless competition.
[{236}] «Note in original.» Seals? Pennant about battles of seals.
[{237}] In the Linnean paper of July 1, 1858 the final word is mate: but the context shows that it should be male; it is moreover clearly so written in the MS.
[{238}] In the Origin the author would here have used the word variety.
[{239}] The whole of p. 94 and 15 lines of p. 95 are, in the MS., marked through in pencil with vertical lines, beginning at “Races produced, &c.” and ending with “to these conditions.”
[{240}] See Origin, Ed. i. p. 83, vi. p. 102.