Naudin's paper ("Revue Horticole," 1852) is mentioned in the "Historical Sketch" prefixed to the later editions of the "Origin" (Edition VI., page xix).
Naudin insisted that species are formed in a manner analogous to the production of varieties by cultivators, i.e., by selection, "but he does not show how selection acts under nature." In the "Life and Letters," II., page 246, Darwin, speaking of Naudin's work, says: "Decaisne seems to think he gives my whole theory."), but it does not seem to me to anticipate me, as he does not show how selection could be applied under nature; but an obscure writer (126/2.

The obscure writer is Patrick Matthew (see the "Historical Sketch" in the "Origin.") on forest trees, in 1830, in Scotland, most expressly and clearly anticipated my views--though he put the case so briefly that no single person ever noticed the scattered passages in his book.
LETTER 127.

TO L.HINDMARSH.
(127/1.

The following letter was in reply to one from Mr.Hindmarsh, to whom Mr.Darwin had written asking for information on the average number of animals killed each year in the Chillingham herd.

The object of the request was to obtain information which might throw light on the rate of increase of the cattle relatively to those on the pampas of South America.