W. January 30, 1869._
Dear Darwin,--Will you tell me _where_ are Fleeming Jenkin's arguments
on the importance of single variation? Because I at present hold most
strongly the contrary opinion, that it is the individual differences or
_general variability_ of species that enables them to become modified
and adapted to new conditions.
Variations or "sports" may be important in modifying an animal in one
direction, as in colour for instance, but how it can possibly work in
changes requiring co-ordination of many parts, as in Orchids for
example, I cannot conceive. And as all the more important structural
modifications of animals and plants imply much co-ordination, it appears
to me that the chances are millions to one against _individual
variations_ ever coinciding so as to render the required modification
possible. However, let me read first what has convinced you.
You may tell Mrs. Darwin that I have now a daughter.
Give my kind regards to her and all your family.--Very truly yours,
ALFRED R. WALLACE.
* * * * *
_Down, Bromley, Kent, S.
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