Footnotes:
Reading edition
Mr. Romanes, in his “Mental Evolution in Animals” (November, 1883), refers to this passage of Mr. Darwin’s, and endorses it with approbation (p. 297).
Mr. Romanes is, I think, right in setting aside Mr. Spencer’s limitation of memory to conscious memory. He writes, “Because I have so often seen the sun shine that my memory of it as shining has become automatic, I see no reason why my memory of this fact, simply on account of its perfection, should be called no memory.” [198e]