Comparison with 1859 |
|
be dimly seen, and will
be hereafter be hereafter 1859 1860 1861 1866 | hereafter be 1869 1872 |
briefly
mentioned. mentioned. 1859 1860 1861 1866 | discussed. 1869 1872 |
I will here only allude to what may be called
correlation correlation 1859 1860 1861 1866 | correlated 1869 1872 |
of growth. of growth. 1859 1860 1861 1866 | variation. 1869 1872 |
Any Any 1859 1860 1861 1866 | Important 1869 1872 |
change change 1859 1860 1861 1866 | changes 1869 1872 |
in the embryo or larva will
almost certainly almost certainly 1859 1860 1861 | probably 1866 1869 1872 |
entail changes in the mature animal. In monstrosities, the correlations between quite distinct parts are very curious; and many instances are given in Isidore Geoffroy St. Hilaire's great work on this subject. Breeders believe that long limbs are almost always accompanied by an elongated head. Some instances of correlation are quite
whimsical: whimsical: 1859 1860 1861 1866 1869 | whimsical; 1872 |
thus cats
with with 1859 1860 1861 |
which are entirely white and have 1866 1869 1872 |
blue eyes are
invariably invariably 1859 1860 | generally 1861 1866 1869 1872 |
deaf;
colour 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 |
and constitutional peculiarities go together, of which many remarkable cases could be given amongst animals and plants. From
the the 1859 1860 1861 | the 1866 1869 1872 |
facts collected by Heusinger, it appears that white sheep and pigs are
differently affected from coloured individuals differently affected from coloured individuals 1859 1860 1861 |
injured 1866 1869 1872 |
by certain
vegetable poisons. 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."
|
Hairless dogs have imperfect
teeth; teeth; 1859 | teeth: 1860 1861 1866 1869 1872 |
long-haired
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, 1859 1860 | Hence 1861 1866 1869 1872 |
if man goes on selecting, and thus augmenting, any peculiarity, he will almost certainly
unconsciously unconsciously 1859 1860 | unintentionally 1861 1866 | unconsciously 1869 1872 |
modify
other other 1859 1860 1861 1866 | unintentionally other 1869 1872 |
parts of the structure, owing to the mysterious laws of
the the 1859 1860 1861 1866 | the 1869 1872 |
correlation correlation 1859 1860 1861 1866 | correlation. 1869 1872 |
of of 1859 1860 1861 1866 | of 1869 1872 |
growth. growth. 1859 1860 1861 1866 | growth. 1869 1872 |
|
|
The
result result 1859 1860 1861 1866 | results 1869 1872 |
of the various,
quite quite 1859 1860 1861 1866 | quite 1869 1872 |
unknown, or
dimly seen dimly seen 1859 1860 1861 1866 |
but dimly understood 1869 1872 |
laws of variation
is is 1859 1860 1861 1866 | are 1869 1872 |
infinitely complex and diversified. It is well worth while carefully to study the several treatises
published published 1859 1860 1861 | published 1866 1869 1872 |
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
in in 1859 1860 1861 1866 1869 | of 1872 |
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 1859 1860 1861 1866 1869 | tends to 1872 |
depart depart 1859 1860 1861 1866 1869 | departs 1872 |
in
some small some small 1859 1860 1861 1866 | a slight 1869 1872 |
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,
is is 1859 1860 | are 1861 1866 1869 1872 |
endless. Dr. Prosper Lucas's treatise, in two large volumes, is the fullest and the best on this subject. No breeder
|
be dimly seen, and will
hereafter be hereafter be 1869 1872 | be hereafter 1859 1860 1861 1866 |
briefly
discussed. discussed. 1869 1872 | mentioned. 1859 1860 1861 1866 |
I will here only allude to what may be called
correlated correlated 1869 1872 | correlation 1859 1860 1861 1866 |
variation. variation. 1869 1872 | of growth. 1859 1860 1861 1866 |
Important Important 1869 1872 | Any 1859 1860 1861 1866 |
changes changes 1869 1872 | change 1859 1860 1861 1866 |
in the embryo or larva will
probably probably 1866 1869 1872 | almost certainly 1859 1860 1861 |
entail changes in the mature animal. In monstrosities, the correlations between quite distinct parts are very curious; and many instances are given in Isidore Geoffroy St. Hilaire's great work on this subject. Breeders believe that long limbs are almost always accompanied by an elongated head. Some instances of correlation are quite
whimsical; whimsical; 1872 | whimsical: 1859 1860 1861 1866 1869 |
thus cats
which are entirely white and have which are entirely white and have 1866 1869 1872 |
with 1859 1860 1861 |
blue eyes are
generally generally 1861 1866 1869 1872 | invariably 1859 1860 |
deaf; deaf; 1859 1860 1872 | deaf. 1861 1866 1869 |
but it has been lately stated by Mr. Tait that this is confined to the males. Colour but it has been lately stated by Mr. Tait that this is confined to the males. Colour 1872 |
colour 1859 1860 |
Colour 1861 1866 1869 |
and constitutional peculiarities go together, of which many remarkable cases could be given amongst animals and plants. From
....... 1866 1869 1872 | the 1859 1860 1861 |
facts collected by Heusinger, it appears that white sheep and pigs are
injured injured 1866 1869 1872 |
differently affected from coloured individuals 1859 1860 1861 |
by certain
plants, whilst dark-coloured individuals escape: plants, whilst dark-coloured individuals escape: 1866 1869 1872 |
vegetable poisons. 1859 1860 |
vegetable poisons: 1861 |
Professor Wyman has recently communicated to me a good illustration of this fact; on asking some farmers in
Virginia Virginia 1872 | Florida 1861 1866 1869 |
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.
(
i.e.
1861 1866 1872 |
(
I. e.
1869 |
Virginia Virginia 1872 | Florida 1861 1866 1869 |
squatters) added, "we select the black members of a litter for raising, as they alone have a good chance of living." Hairless dogs have imperfect
teeth: teeth: 1860 1861 1866 1869 1872 | teeth; 1859 |
long-haired long-haired 1859 1860 1861 1869 1872 | long-hair 1866 |
and and 1859 1860 1861 1869 1872 | ed and 1866 |
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 1861 1866 1869 1872 | Hence, 1859 1860 |
if man goes on selecting, and thus augmenting, any peculiarity, he will almost certainly
....... 1869 1872 | unconsciously 1859 1860 | unintentionally 1861 1866 |
modify
unintentionally other unintentionally other 1869 1872 | other 1859 1860 1861 1866 |
parts of the structure, owing to the mysterious laws of
....... 1869 1872 | the 1859 1860 1861 1866 |
correlation. correlation. 1869 1872 | correlation 1859 1860 1861 1866 |
....... 1869 1872 | of 1859 1860 1861 1866 |
....... 1869 1872 | growth. 1859 1860 1861 1866 |
|
|
The
results results 1869 1872 | result 1859 1860 1861 1866 |
of the various,
....... 1869 1872 | quite 1859 1860 1861 1866 |
unknown, or
but dimly understood but dimly understood 1869 1872 |
dimly seen 1859 1860 1861 1866 |
laws of variation
are are 1869 1872 | is 1859 1860 1861 1866 |
infinitely complex and diversified. It is well worth while carefully to study the several treatises
....... 1866 1869 1872 | published 1859 1860 1861 |
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 of 1872 | in 1859 1860 1861 1866 1869 |
structure and constitution in which the varieties and sub-varieties differ slightly from each other. The whole organisation seems to have become plastic, and
....... 1872 | tends to 1859 1860 1861 1866 1869 |
departs departs 1872 | depart 1859 1860 1861 1866 1869 |
in
a slight a slight 1869 1872 | some small 1859 1860 1861 1866 |
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 are 1861 1866 1869 1872 | is 1859 1860 |
endless. Dr. Prosper Lucas's treatise, in two large volumes, is the fullest and the best on this subject. No breeder
|