1859 | \n", "1860 | \n", "1861 | \n", "1866 | \n", "1869 | \n", "1872 | \n", "
---|---|---|---|---|---|
- | \n", "- | \n", "- | \n", "Causes of Variability. | \n",
" Causes of Variability. | \n",
" Causes of Variability. | \n",
"
WHEN we | \n", "WHEN we | \n", "WHEN we | \n", "WHEN we | \n", "WHEN we | \n", "WHEN we | \n", "
look to | \n", "look to | \n", "look to | \n", "look to | \n", "compare | \n", "compare | \n", "
the individuals of the same variety or sub-variety of our older cultivated plants and animals, one of the first points which strikes us | \n",
" the individuals of the same variety or sub-variety of our older cultivated plants and animals, one of the first points which strikes us | \n",
" the individuals of the same variety or sub-variety of our older cultivated plants and animals, one of the first points which strikes us | \n",
" the individuals of the same variety or sub-variety of our older cultivated plants and animals, one of the first points which strikes us | \n",
" the individuals of the same variety or sub-variety of our older cultivated plants and animals, one of the first points which strikes us | \n",
" the individuals of the same variety or sub-variety of our older cultivated plants and animals, one of the first points which strikes us | \n",
"
, | \n", ", | \n", ", | \n", ", | \n", "- | \n", "- | \n", "
is, that they generally differ | \n",
" is, that they generally differ | \n",
" is, that they generally differ | \n",
" is, that they generally differ | \n",
" is, that they generally differ | \n",
" is, that they generally differ | \n",
"
much | \n", "- | \n", "- | \n", "- | \n", "- | \n", "- | \n", "
more | \n", "more | \n", "more | \n", "more | \n", "- | \n", "more | \n", "
from each other | \n", "from each other | \n", "from each other | \n", "from each other | \n", "from each other | \n", "from each other | \n", "
, | \n", "- | \n", "- | \n", "- | \n", "more | \n", "- | \n", "
than do the individuals of any one species or variety in a state of nature. | \n",
" than do the individuals of any one species or variety in a state of nature. | \n",
" than do the individuals of any one species or variety in a state of nature. | \n",
" than do the individuals of any one species or variety in a state of nature. | \n",
" than do the individuals of any one species or variety in a state of nature. | \n",
" than do the individuals of any one species or variety in a state of nature. | \n",
"
When | \n", "When | \n", "When | \n", "When | \n", "And if | \n", "And if | \n", "
we reflect on the vast diversity of the plants and animals which have been cultivated, and which have varied during all ages under the most different climates and treatment, | \n",
" we reflect on the vast diversity of the plants and animals which have been cultivated, and which have varied during all ages under the most different climates and treatment, | \n",
" we reflect on the vast diversity of the plants and animals which have been cultivated, and which have varied during all ages under the most different climates and treatment, | \n",
" we reflect on the vast diversity of the plants and animals which have been cultivated, and which have varied during all ages under the most different climates and treatment, | \n",
" we reflect on the vast diversity of the plants and animals which have been cultivated, and which have varied during all ages under the most different climates and treatment, | \n",
" we reflect on the vast diversity of the plants and animals which have been cultivated, and which have varied during all ages under the most different climates and treatment, | \n",
"
I think | \n", "I think | \n", "I think | \n", "I think | \n", "- | \n", "- | \n", "
we are driven to conclude that this | \n",
" we are driven to conclude that this | \n",
" we are driven to conclude that this | \n",
" we are driven to conclude that this | \n",
" we are driven to conclude that this | \n",
" we are driven to conclude that this | \n",
"
greater | \n", "great | \n", "great | \n", "great | \n", "great | \n", "great | \n", "
variability is | \n", "variability is | \n", "variability is | \n", "variability is | \n", "variability is | \n", "variability is | \n", "
simply | \n", "simply | \n", "simply | \n", "simply | \n", "- | \n", "- | \n", "
due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat different from, those to which the parent-species | \n",
" due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat different from, those to which the parent-species | \n",
" due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat different from, those to which the parent-species | \n",
" due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat different from, those to which the parent-species | \n",
" due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat different from, those to which the parent-species | \n",
" due to our domestic productions having been raised under conditions of life not so uniform as, and somewhat different from, those to which the parent-species | \n",
"
have | \n", "have | \n", "have | \n", "have | \n", "had | \n", "had | \n", "
been exposed under nature. There is | \n",
" been exposed under nature. There is | \n",
" been exposed under nature. There is | \n",
" been exposed under nature. There is | \n",
" been exposed under nature. There is | \n",
" been exposed under nature. There is | \n",
"
, | \n", "- | \n", "- | \n", "- | \n", "- | \n", ", | \n", "
also | \n", "also | \n", "also | \n", "also | \n", "also | \n", "also | \n", "
, I think | \n", ", I think | \n", ", I think | \n", ", I think | \n", ", I think | \n", "- | \n", "
, some probability in the view propounded by Andrew Knight, that this variability may be partly connected with excess of food. It seems | \n",
" , some probability in the view propounded by Andrew Knight, that this variability may be partly connected with excess of food. It seems | \n",
" , some probability in the view propounded by Andrew Knight, that this variability may be partly connected with excess of food. It seems | \n",
" , some probability in the view propounded by Andrew Knight, that this variability may be partly connected with excess of food. It seems | \n",
" , some probability in the view propounded by Andrew Knight, that this variability may be partly connected with excess of food. It seems | \n",
" , some probability in the view propounded by Andrew Knight, that this variability may be partly connected with excess of food. It seems | \n",
"
pretty | \n", "pretty | \n", "pretty | \n", "pretty | \n", "- | \n", "- | \n", "
clear that organic beings must be exposed during several generations to | \n",
" clear that organic beings must be exposed during several generations to | \n",
" clear that organic beings must be exposed during several generations to | \n",
" clear that organic beings must be exposed during several generations to | \n",
" clear that organic beings must be exposed during several generations to | \n",
" clear that organic beings must be exposed during several generations to | \n",
"
the | \n", "the | \n", "the | \n", "the | \n", "- | \n", "- | \n", "
new | \n", "new | \n", "new | \n", "new | \n", "new | \n", "new | \n", "
conditions of life | \n", "conditions of life | \n", "conditions of life | \n", "conditions of life | \n", "conditions | \n", "conditions | \n", "
to cause any | \n", "to cause any | \n", "to cause any | \n", "to cause any | \n", "to cause any | \n", "to cause any | \n", "
appreciable | \n", "appreciable | \n", "appreciable | \n", "appreciable | \n", "appreciable | \n", "great | \n", "
amount of variation; and that | \n",
" amount of variation; and that | \n",
" amount of variation; and that | \n",
" amount of variation; and that | \n",
" amount of variation; and that | \n",
" amount of variation; and that | \n",
"
- | \n", "- | \n", "- | \n", ", | \n", ", | \n", ", | \n", "
when the organisation has once begun to vary, it generally | \n",
" when the organisation has once begun to vary, it generally | \n",
" when the organisation has once begun to vary, it generally | \n",
" when the organisation has once begun to vary, it generally | \n",
" when the organisation has once begun to vary, it generally | \n",
" when the organisation has once begun to vary, it generally | \n",
"
continues | \n", "continues | \n", "continues | \n", "continues | \n", "con- tinues | \n", "continues | \n", "
to vary | \n", "to vary | \n", "to vary | \n", "to vary | \n", "varying | \n", "varying | \n", "
for many generations. No case is on record of a variable | \n",
" for many generations. No case is on record of a variable | \n",
" for many generations. No case is on record of a variable | \n",
" for many generations. No case is on record of a variable | \n",
" for many generations. No case is on record of a variable | \n",
" for many generations. No case is on record of a variable | \n",
"
being | \n", "being | \n", "being | \n", "being | \n", "organism | \n", "organism | \n", "
ceasing | \n", "ceasing | \n", "ceasing | \n", "ceasing | \n", "ceasing | \n", "ceasing | \n", "
to be variable | \n", "to be variable | \n", "to be variable | \n", "to be variable | \n", "to vary | \n", "to vary | \n", "
under cultivation. Our oldest cultivated plants, such as wheat, still | \n",
" under cultivation. Our oldest cultivated plants, such as wheat, still | \n",
" under cultivation. Our oldest cultivated plants, such as wheat, still | \n",
" under cultivation. Our oldest cultivated plants, such as wheat, still | \n",
" under cultivation. Our oldest cultivated plants, such as wheat, still | \n",
" under cultivation. Our oldest cultivated plants, such as wheat, still | \n",
"
often | \n", "often | \n", "often | \n", "often | \n", "- | \n", "- | \n", "
yield new varieties: our oldest domesticated animals are still capable of rapid improvement or modification. | \n",
" yield new varieties: our oldest domesticated animals are still capable of rapid improvement or modification. | \n",
" yield new varieties: our oldest domesticated animals are still capable of rapid improvement or modification. | \n",
" yield new varieties: our oldest domesticated animals are still capable of rapid improvement or modification. | \n",
" yield new varieties: our oldest domesticated animals are still capable of rapid improvement or modification. | \n",
" yield new varieties: our oldest domesticated animals are still capable of rapid improvement or modification. | \n",
"
1859 | \n", "1860 | \n", "1861 | \n", "1866 | \n", "1869 | \n", "1872 | \n", "
---|---|---|---|---|---|
- | \n", "- | \n", "- | \n", "Causes of\n", "Variability. | \n", "Causes of\n", "Variability. | \n", "Causes of\n", "Variability. | \n", "
WHEN we | \n", "WHEN we | \n", "WHEN we | \n", "WHEN we | \n", "WHEN we | \n", "WHEN we | \n", "
look to | \n", "look to | \n", "look to | \n", "look to | \n", "compare | \n", "compare | \n", "
the individuals of\n", "the same variety or\n", "sub-variety of our\n", "older cultivated\n", "plants and animals,\n", "one of the first\n", "points which strikes\n", "us | \n", "the individuals of\n", "the same variety or\n", "sub-variety of our\n", "older cultivated\n", "plants and animals,\n", "one of the first\n", "points which strikes\n", "us | \n", "the individuals of\n", "the same variety or\n", "sub-variety of our\n", "older cultivated\n", "plants and animals,\n", "one of the first\n", "points which strikes\n", "us | \n", "the individuals of\n", "the same variety or\n", "sub-variety of our\n", "older cultivated\n", "plants and animals,\n", "one of the first\n", "points which strikes\n", "us | \n", "the individuals of\n", "the same variety or\n", "sub-variety of our\n", "older cultivated\n", "plants and animals,\n", "one of the first\n", "points which strikes\n", "us | \n", "the individuals of\n", "the same variety or\n", "sub-variety of our\n", "older cultivated\n", "plants and animals,\n", "one of the first\n", "points which strikes\n", "us | \n", "
, | \n", ", | \n", ", | \n", ", | \n", "- | \n", "- | \n", "
is, that they\n", "generally differ | \n", "is, that they\n", "generally differ | \n", "is, that they\n", "generally differ | \n", "is, that they\n", "generally differ | \n", "is, that they\n", "generally differ | \n", "is, that they\n", "generally differ | \n", "
much | \n", "- | \n", "- | \n", "- | \n", "- | \n", "- | \n", "
more | \n", "more | \n", "more | \n", "more | \n", "- | \n", "more | \n", "
from each other | \n", "from each other | \n", "from each other | \n", "from each other | \n", "from each other | \n", "from each other | \n", "
, | \n", "- | \n", "- | \n", "- | \n", "more | \n", "- | \n", "
than do the\n", "individuals of any\n", "one species or\n", "variety in a state\n", "of nature. | \n", "than do the\n", "individuals of any\n", "one species or\n", "variety in a state\n", "of nature. | \n", "than do the\n", "individuals of any\n", "one species or\n", "variety in a state\n", "of nature. | \n", "than do the\n", "individuals of any\n", "one species or\n", "variety in a state\n", "of nature. | \n", "than do the\n", "individuals of any\n", "one species or\n", "variety in a state\n", "of nature. | \n", "than do the\n", "individuals of any\n", "one species or\n", "variety in a state\n", "of nature. | \n", "
When | \n", "When | \n", "When | \n", "When | \n", "And if | \n", "And if | \n", "
we reflect on the\n", "vast diversity of\n", "the plants and\n", "animals which have\n", "been cultivated, and\n", "which have varied\n", "during all ages\n", "under the most\n", "different climates\n", "and treatment, | \n", "we reflect on the\n", "vast diversity of\n", "the plants and\n", "animals which have\n", "been cultivated, and\n", "which have varied\n", "during all ages\n", "under the most\n", "different climates\n", "and treatment, | \n", "we reflect on the\n", "vast diversity of\n", "the plants and\n", "animals which have\n", "been cultivated, and\n", "which have varied\n", "during all ages\n", "under the most\n", "different climates\n", "and treatment, | \n", "we reflect on the\n", "vast diversity of\n", "the plants and\n", "animals which have\n", "been cultivated, and\n", "which have varied\n", "during all ages\n", "under the most\n", "different climates\n", "and treatment, | \n", "we reflect on the\n", "vast diversity of\n", "the plants and\n", "animals which have\n", "been cultivated, and\n", "which have varied\n", "during all ages\n", "under the most\n", "different climates\n", "and treatment, | \n", "we reflect on the\n", "vast diversity of\n", "the plants and\n", "animals which have\n", "been cultivated, and\n", "which have varied\n", "during all ages\n", "under the most\n", "different climates\n", "and treatment, | \n", "
I think | \n", "I think | \n", "I think | \n", "I think | \n", "- | \n", "- | \n", "
we are driven to\n", "conclude that this | \n", "we are driven to\n", "conclude that this | \n", "we are driven to\n", "conclude that this | \n", "we are driven to\n", "conclude that this | \n", "we are driven to\n", "conclude that this | \n", "we are driven to\n", "conclude that this | \n", "
greater | \n", "great | \n", "great | \n", "great | \n", "great | \n", "great | \n", "
variability is | \n", "variability is | \n", "variability is | \n", "variability is | \n", "variability is | \n", "variability is | \n", "
simply | \n", "simply | \n", "simply | \n", "simply | \n", "- | \n", "- | \n", "
due to our domestic\n", "productions having\n", "been raised under\n", "conditions of life\n", "not so uniform as,\n", "and somewhat\n", "different from,\n", "those to which the\n", "parent-species | \n", "due to our domestic\n", "productions having\n", "been raised under\n", "conditions of life\n", "not so uniform as,\n", "and somewhat\n", "different from,\n", "those to which the\n", "parent-species | \n", "due to our domestic\n", "productions having\n", "been raised under\n", "conditions of life\n", "not so uniform as,\n", "and somewhat\n", "different from,\n", "those to which the\n", "parent-species | \n", "due to our domestic\n", "productions having\n", "been raised under\n", "conditions of life\n", "not so uniform as,\n", "and somewhat\n", "different from,\n", "those to which the\n", "parent-species | \n", "due to our domestic\n", "productions having\n", "been raised under\n", "conditions of life\n", "not so uniform as,\n", "and somewhat\n", "different from,\n", "those to which the\n", "parent-species | \n", "due to our domestic\n", "productions having\n", "been raised under\n", "conditions of life\n", "not so uniform as,\n", "and somewhat\n", "different from,\n", "those to which the\n", "parent-species | \n", "
have | \n", "have | \n", "have | \n", "have | \n", "had | \n", "had | \n", "
been exposed under\n", "nature. There is | \n", "been exposed under\n", "nature. There is | \n", "been exposed under\n", "nature. There is | \n", "been exposed under\n", "nature. There is | \n", "been exposed under\n", "nature. There is | \n", "been exposed under\n", "nature. There is | \n", "
, | \n", "- | \n", "- | \n", "- | \n", "- | \n", ", | \n", "
also | \n", "also | \n", "also | \n", "also | \n", "also | \n", "also | \n", "
, I think | \n", ", I think | \n", ", I think | \n", ", I think | \n", ", I think | \n", "- | \n", "
, some probability\n", "in the view\n", "propounded by Andrew\n", "Knight, that this\n", "variability may be\n", "partly connected\n", "with excess of food.\n", "It seems | \n", ", some probability\n", "in the view\n", "propounded by Andrew\n", "Knight, that this\n", "variability may be\n", "partly connected\n", "with excess of food.\n", "It seems | \n", ", some probability\n", "in the view\n", "propounded by Andrew\n", "Knight, that this\n", "variability may be\n", "partly connected\n", "with excess of food.\n", "It seems | \n", ", some probability\n", "in the view\n", "propounded by Andrew\n", "Knight, that this\n", "variability may be\n", "partly connected\n", "with excess of food.\n", "It seems | \n", ", some probability\n", "in the view\n", "propounded by Andrew\n", "Knight, that this\n", "variability may be\n", "partly connected\n", "with excess of food.\n", "It seems | \n", ", some probability\n", "in the view\n", "propounded by Andrew\n", "Knight, that this\n", "variability may be\n", "partly connected\n", "with excess of food.\n", "It seems | \n", "
pretty | \n", "pretty | \n", "pretty | \n", "pretty | \n", "- | \n", "- | \n", "
clear that organic\n", "beings must be\n", "exposed during\n", "several generations\n", "to | \n", "clear that organic\n", "beings must be\n", "exposed during\n", "several generations\n", "to | \n", "clear that organic\n", "beings must be\n", "exposed during\n", "several generations\n", "to | \n", "clear that organic\n", "beings must be\n", "exposed during\n", "several generations\n", "to | \n", "clear that organic\n", "beings must be\n", "exposed during\n", "several generations\n", "to | \n", "clear that organic\n", "beings must be\n", "exposed during\n", "several generations\n", "to | \n", "
the | \n", "the | \n", "the | \n", "the | \n", "- | \n", "- | \n", "
new | \n", "new | \n", "new | \n", "new | \n", "new | \n", "new | \n", "
conditions of life | \n", "conditions of life | \n", "conditions of life | \n", "conditions of life | \n", "conditions | \n", "conditions | \n", "
to cause any | \n", "to cause any | \n", "to cause any | \n", "to cause any | \n", "to cause any | \n", "to cause any | \n", "
appreciable | \n", "appreciable | \n", "appreciable | \n", "appreciable | \n", "appreciable | \n", "great | \n", "
amount of variation;\n", "and that | \n", "amount of variation;\n", "and that | \n", "amount of variation;\n", "and that | \n", "amount of variation;\n", "and that | \n", "amount of variation;\n", "and that | \n", "amount of variation;\n", "and that | \n", "
- | \n", "- | \n", "- | \n", ", | \n", ", | \n", ", | \n", "
when the\n", "organisation has\n", "once begun to vary,\n", "it generally | \n", "when the\n", "organisation has\n", "once begun to vary,\n", "it generally | \n", "when the\n", "organisation has\n", "once begun to vary,\n", "it generally | \n", "when the\n", "organisation has\n", "once begun to vary,\n", "it generally | \n", "when the\n", "organisation has\n", "once begun to vary,\n", "it generally | \n", "when the\n", "organisation has\n", "once begun to vary,\n", "it generally | \n", "
continues | \n", "continues | \n", "continues | \n", "continues | \n", "con- tinues | \n", "continues | \n", "
to vary | \n", "to vary | \n", "to vary | \n", "to vary | \n", "varying | \n", "varying | \n", "
for many\n", "generations. No case\n", "is on record of a\n", "variable | \n", "for many\n", "generations. No case\n", "is on record of a\n", "variable | \n", "for many\n", "generations. No case\n", "is on record of a\n", "variable | \n", "for many\n", "generations. No case\n", "is on record of a\n", "variable | \n", "for many\n", "generations. No case\n", "is on record of a\n", "variable | \n", "for many\n", "generations. No case\n", "is on record of a\n", "variable | \n", "
being | \n", "being | \n", "being | \n", "being | \n", "organism | \n", "organism | \n", "
ceasing | \n", "ceasing | \n", "ceasing | \n", "ceasing | \n", "ceasing | \n", "ceasing | \n", "
to be variable | \n", "to be variable | \n", "to be variable | \n", "to be variable | \n", "to vary | \n", "to vary | \n", "
under cultivation.\n", "Our oldest\n", "cultivated plants,\n", "such as wheat, still | \n", "under cultivation.\n", "Our oldest\n", "cultivated plants,\n", "such as wheat, still | \n", "under cultivation.\n", "Our oldest\n", "cultivated plants,\n", "such as wheat, still | \n", "under cultivation.\n", "Our oldest\n", "cultivated plants,\n", "such as wheat, still | \n", "under cultivation.\n", "Our oldest\n", "cultivated plants,\n", "such as wheat, still | \n", "under cultivation.\n", "Our oldest\n", "cultivated plants,\n", "such as wheat, still | \n", "
often | \n", "often | \n", "often | \n", "often | \n", "- | \n", "- | \n", "
yield new varieties:\n", "our oldest\n", "domesticated animals\n", "are still capable of\n", "rapid improvement or\n", "modification. | \n", "yield new varieties:\n", "our oldest\n", "domesticated animals\n", "are still capable of\n", "rapid improvement or\n", "modification. | \n", "yield new varieties:\n", "our oldest\n", "domesticated animals\n", "are still capable of\n", "rapid improvement or\n", "modification. | \n", "yield new varieties:\n", "our oldest\n", "domesticated animals\n", "are still capable of\n", "rapid improvement or\n", "modification. | \n", "yield new varieties:\n", "our oldest\n", "domesticated animals\n", "are still capable of\n", "rapid improvement or\n", "modification. | \n", "yield new varieties:\n", "our oldest\n", "domesticated animals\n", "are still capable of\n", "rapid improvement or\n", "modification. | \n", "