antana (Verbenaceae)
grows vigorously in Ceylon, and is described as frequently making its
appearance after the firing of the low-country forests (see H.H.W.
Pearson, "The Botany of the Ceylon Patanas," "Journal Linn. Soc." Volume
XXXIV., page 317, 1899). No doubt Thwaites' letter to Darwin referred
to the spreading of the introduced Lantana, comparable to that of the
cardoon in La Plata and of other plants mentioned by Darwin in the
"Origin of Species" (Edition VI., page 51).), and I should at any time
be most grateful for any information which you think would be of use
to me. I hope that you will publish a list of all naturalised plants
in Ceylon, as far as known, carefully distinguishing those confined to
cultivated soils alone. I feel sure that this most important subject has
been greatly undervalued.

LETTER 98. TO T.H. HUXLEY.

(98/1. The reference here is to the review on the "Origin of Species"
generally believed to be by the late Sir R. Owen, and published in
the April number of the "Edinburgh Review," 1860. Owen's biographer
is silent on the subject, and prints, without comment, the following
passage in an undated letter from Sedgwick to Owen: "Do you know who was
the author of the article in the "Edinburgh" on the subject of Darwin's
theory? On the whole, I think it very good. I once suspected that you
must have had a hand in it, and I then abandoned that thought. I have
not read it with any care" (Owen's "Life," Volume II., page 96).

April 9th [1860].

I never saw such an amount of misrepresentation. At page 530 (98/2.
"Lasting and fruitful conclusions have, indeed, hitherto been based
only on the possession of knowledge; now we are called upon to accept an
hypothesis on the plea of want of knowledge. The geological record,
it is averred, is so imperfect!"--"Edinburgh Review," CXI., 1860, page
530.) he says we are called on to accept the hypothesis on the plea of
ignorance, whereas I think I could not have made it clearer that I admit
the imperfection of the Geological Record as a great difficulty.

The quotation (98/3. "We are appealed to, or at least 'the young and
rising naturalists with plastic minds,* [On the Nature of the Limbs,
page 482] are adjured." It will be seen that the inverted comma after
"naturalists" is omitted; the asterisk referring, in a footnote (here
placed in square brackets), to page 482 of the "Origin," seems to
have been incorrectly assumed by Mr. Darwin to show the close of