See page in:
1859
1860
1861
1866
1869
1872

Compare with:
1859
1861
1866
1869
1872

with 1859 1860 1861
which are entirely white and have 1866 1869 1872

colour 1859 1860
Colour 1861 1866 1869
but it has been lately stated by Mr. Tait that this is confined to the males. Colour 1872

differently affected from coloured individuals 1859 1860 1861
injured 1866 1869 1872

vegetable poisons. 1859 1860
vegetable poisons: 1861
plants, whilst dark-coloured individuals escape: 1866 1869 1872

1 blocks not present in 1859 1860; present in 1861 1866 1869 1872
Professor Wyman has recently communicated to me a good illustration of this fact; on asking some farmers in Florida how it was that all their pigs were black, they informed him that the pigs ate the paint-root (Lachnanthes), which coloured their bones pink, and which caused the hoofs of all but the black varieties to drop off; and one of the "crackers" ( i.e. Florida squatters) added, "we select the black members of a litter for raising, as they alone have a good chance of living."

dimly seen 1859 1860 1861 1866
but dimly understood 1869 1872

of structure often appears, 1860 1861 1866 1869 1872
appears not unfrequently, 1859

cats with blue eyes are
generally
invariably
deaf.
deaf;
colour and constitutional peculiarities go together, of which many remarkable cases could be given amongst animals and plants. From
the
the
facts collected by Heusinger, it appears that white sheep and pigs are differently affected from coloured individuals by certain vegetable poisons. Hairless dogs have imperfect
teeth;
teeth:
long-hair
long-haired
ed and
and
coarse-haired animals are apt to have, as is asserted, long or many horns; pigeons with feathered feet have skin between their outer toes; pigeons with short beaks have small feet, and those with long beaks large feet.
Hence
Hence,
if man goes on selecting, and thus augmenting, any peculiarity, he will almost certainly
unintentionally
unconsciously
unconsciously
modify
unintentionally other
other
parts of the structure, owing to the mysterious laws of
the
the
correlation.
correlation
of
of
growth.
growth.
The
results
result
of the various,
quite
quite
unknown, or dimly seen laws of variation
are
is
infinitely complex and diversified. It is well worth while carefully to study the several treatises
published
published
on some of our old cultivated plants, as on the hyacinth, potato, even the dahlia, &c.; and it is really surprising to note the endless points
of
in
structure and constitution in which the varieties and sub-varieties differ slightly from each other. The whole organisation seems to have become plastic, and
tends to
tends to
departs
depart
in
a slight
some small
degree from that of the parental type.
Any variation which is not inherited is unimportant for us. But the number and diversity of inheritable deviations of structure, both those of slight and those of considerable physiological importance,
are
is
endless. Dr. Prosper Lucas's treatise, in two large volumes, is the fullest and the best on this subject. No breeder doubts how strong is the tendency to
inheritance;
inheritance:
that like
like
produces like is his fundamental belief: doubts have been thrown on this principle
only by
by
theoretical
writers.
writers
alone.
alone.
When
a
any
deviation of structure often appears, and we see it in the father