Darwin and Lamarck became fully apparent to me, and I saw how
incoherent and unworkable in practice the later view was in
comparison with the earlier. Then I read Mr. Darwin's answers to
miscellaneous objections, and was met, and this time brought up, by
the passage beginning "In the earlier editions of this work," {24a}
&c., on which I wrote very severely in "Life and Habit"; {24b} for I
felt by this time that the difference of opinion between us was
radical, and that the matter must be fought out according to the
rules of the game. After this I went through the earlier part of my
book, and cut out the expressions which I had used inadvertently, and
which were inconsistent with a teleological view. This necessitated
only verbal alterations; for, though I had not known it, the spirit
of the book was throughout teleological.

I now saw that I had got my hands full, and abandoned my intention of
touching upon "Pangenesis." I took up the words of Mr. Darwin quoted
above, to the effect that it would be a serious error to ascribe the
greater number of instincts to transmitted habit. I wrote chapter
xi. of "Life and Habit," which is headed "Instincts as Inherited
Memory"; I also wrote the four subsequent chapters, "Instincts of
Neuter Insects," "Lamarck and Mr. Darwin," "Mr. Mivart and Mr.
Darwin," and the concluding chapter, all of them in the month of
October and the early part of November 1877, the complete book
leaving the binder's hands December 4, 1877, but, according to trade
custom, being dated 1878. It will be seen that these five concluding
chapters were rapidly written, and this may account in part for the
directness with which I said anything I had to say about Mr. Darwin;
partly this, and partly I felt I was in for a penny and might as well
be in for a pound. I therefore wrote about Mr. Darwin's work exactly
as I should about any one else's, bearing in mind the inestimable