use my own term) were often deficient in buds, I
cannot but think that bud-variations would be commoner than they are in
a state of nature; nor does it seem that bud-variations often exhibit
deficiencies which might be accounted for by the absence of the proper
gemmules. I take a very different view of the meaning or cause of
sexuality. (271/4. Mr. Galton's idea is that in a bud or other
asexually produced part, the germs (i.e. gemmules) may not be completely
representative of the whole organism, and if reproduction is continued
asexually "at each successive stage there is always a chance of some one
or more of the various species of germs... dying out" (page 333). Mr.
Galton supposes, in sexual reproduction, where two parents contribute
germs to the embryo the chance of deficiency of any of the necessary
germs is greatly diminished. Darwin's "very different view of the
meaning or cause of sexuality" is no doubt that given in "Cross and
Self Fertilisation"--i.e., that sexuality is equivalent to changed
conditions, that the parents are not representative of different sexes,
but of different conditions of life.)

4. I have ordered "Fraser's Magazine" (271/5. "The History of Twins,"
by F. Galton, "Fraser's Magazine," November, 1875, republished with
additions in the "Journal of the Anthropological Institute," 1875. Mr.
Galton explains the striking dissimilarity of twins which is sometimes
met with by supposing that the offspring in this case divide the
available gemmules between them in such a way that each is the
complement of the other. Thus, to put the case in an exaggerated way,
similar twins would each have half the gemmules A, B, C,...Z., etc,
whereas, in the case of dissimilar twins, one would have all the
gemmules A, B, C, D,...M, and the other would have N...Z.), and am
curious to learn how twins from a single ovum are distinguished from
twins from two ova. Nothing seems to me more curious than the similarity
and dissimilarity of twins.

5. Awfully difficult to understand.

6. I have given almost the same notion.

7. I hope that all this will be altered. I have received new and
additional cases, so that I have now not a shadow of doubt.

8. Such cases can hardly be spoken of as very rare, as you would say if
you had received half the number of cases I have.

(271/6. We are unable to determine to what paragraphs 5, 6, 7, 8 refer.)

I am very sorry to differ so much from you, but I have thought that you
wou