On this subject see Letter 178.), saying he was sorry that I had given up atavism and extra digits, and telling me of new and good evidence of rudiments of a rudimentary sixth digit in Batrachians (which I had myself seen, but given up owing to Gegenbaur's views); but, with re-growth failing me, I could not uphold my old notion.
LETTER 275.

TO G.J.

ROMANES.
(275/1.

Mr.Romanes' reply to this letter is printed in his "Life and Letters," page 93, where by an oversight it is dated 1880-81.) H.Wedgwood, Esq., Hopedene, Dorking, May 29th [1876].
As you are interested in pangenesis, and will some day, I hope, convert an "airy nothing" into a substantial theory, I send by this post an essay by Hackel (275/2.

"Die Perigenesis der Plastidule oder die Wellenzeugung der Lebenstheilchen," 79 pages.