ull for man's brutal sport?"

[64] _See_ Wallace, _Quarterly Journ. of Sci._, 1867, pp. 477-8. He
imagined an observer examining a great river system, and finding
everywhere adaptations which reveal the design of the Creator. "He would
see special adaptations to the wants of man in the broad, quiet,
navigable rivers, through fertile alluvial plains, that would support a
large population, while the rocky streams and mountain torrents were
confined to those sterile regions suitable for a small population of
shepherds and herdsmen."

[65] At p. 485 Wallace deals with Fleeming Jenkin's review in the _North
British Review_, 1867. The review strives to show that there are strict
limitations to variation, since the most rigorous and long-continued
selection does not indefinitely increase such a quality as the fleetness
of a racehorse. On this Wallace remarks that the argument "fails to meet
the real question," which is not whether indefinite change is possible,
but "whether such differences as do occur in nature could have been
produced by the accumulation of variations by selection."

[66] Abstract of a paper on "Birds' Nests and Plumage," read before the
British Association. See _Gard. Chron._, 1867, p. 1047.

[67] Sir Henry Holland, Bart., M.D., F.R.S., a writer on Mental
Physiology and other scientific subjects (b. 1788, d. 1873).

[68] "This turns out to be inaccurate, or greatly exaggerated. There are
no true alpines, and the European genera are comparatively few. _See_ my
'Island Life,' p. 323."--A.R.W.

[69] "In pigeons" and "lizards" inserted by A.R.W.

[70] See _Westminster Review_, July, 1867, p. 37.

[71] _Proc. Linn. Soc._, 1867-8, p. 57.

[72] It is not enough that females should be produced from the males
with red feathers, which should be destitute of red feathers; but these
females must have a _latent tendency_ to produce such feathers,
otherwise they would cause deterioration in the red head-feathers of
their male offspring. Such latent tendency would be shown by their
producing the red feathers when old or diseased in their ovaria.

[73] The symbols [male symbol], [female symbol] stand for male and
female respectively.

[74] The fifth.

[75] Explained in letter of February 2, 1869. _See_ p. 234.

[76] June, 1867.

[77] "Malay Archipelago."

[78] "Malay Archipelago."

[79] The fifth edition, pp. 150-7.

[80] In the _Quarterly Review_, April, 1869.

[81] Inserted by A.R.W.

[82] "The D