This is a table of type quadgram and their frequencies. Use it to search & browse the list to learn more about your study carrel.
quadgram | frequency |
---|---|
on the other hand | 431 |
in the case of | 344 |
with respect to the | 288 |
in the course of | 233 |
in the same manner | 210 |
at the same time | 207 |
as far as i | 205 |
solution of one part | 199 |
i do not know | 186 |
charles darwin to j | 180 |
a solution of one | 178 |
of the same species | 170 |
in a state of | 168 |
the case of the | 168 |
the origin of species | 167 |
it seems to me | 161 |
of animals and plants | 161 |
for the sake of | 154 |
i do not think | 153 |
one part to of | 152 |
part to of water | 152 |
of a solution of | 152 |
the nature of the | 149 |
of the sexes in | 143 |
of one part to | 143 |
a state of nature | 139 |
to a certain extent | 137 |
the same manner as | 133 |
of an inch in | 130 |
on the origin of | 128 |
with the exception of | 126 |
of carbonate of ammonia | 115 |
the surface of the | 115 |
one of the most | 114 |
in a letter to | 110 |
of tierra del fuego | 108 |
the middle of the | 105 |
we have seen that | 102 |
the voyage of the | 102 |
a good deal of | 101 |
of one part of | 100 |
minims of a solution | 99 |
the development of the | 99 |
the manner in which | 97 |
the colour of the | 97 |
but i do not | 97 |
as in the case | 97 |
far as i can | 96 |
the end of the | 96 |
as long as the | 94 |
i should like to | 94 |
as well as the | 94 |
in the middle of | 93 |
the conditions of life | 91 |
cape of good hope | 88 |
the length of the | 88 |
proportion of the sexes | 88 |
see life and letters | 87 |
the rest of the | 86 |
it is probable that | 86 |
the base of the | 85 |
by the aid of | 84 |
an inch in length | 84 |
on the discs of | 83 |
i do not believe | 82 |
charles darwin to c | 82 |
voyage of the beagle | 81 |
a large number of | 81 |
reason to believe that | 81 |
were placed on the | 81 |
the glands of the | 81 |
the cape of good | 80 |
at the end of | 79 |
the bottom of the | 79 |
not in the least | 79 |
is one of the | 78 |
animals and plants under | 76 |
the head of the | 76 |
the structure of the | 76 |
at the distance of | 75 |
thank you for your | 75 |
i am very glad | 75 |
parts of the world | 74 |
the case with the | 73 |
the cells of the | 73 |
ths of an inch | 73 |
i hope that you | 73 |
for a long time | 73 |
of some of the | 73 |
as we have seen | 72 |
hope that you will | 72 |
seems to have been | 72 |
this is the case | 72 |
and plants under domestication | 71 |
as far as the | 71 |
individuals of the same | 71 |
in a solution of | 71 |
do not know whether | 70 |
on the coast of | 70 |
the direct action of | 70 |
the life and letters | 69 |
in the midst of | 69 |
in relation to the | 69 |
there can be no | 68 |
the form of the | 67 |
it is impossible to | 67 |
it appears to me | 67 |
in the zoological gardens | 66 |
of the origin of | 66 |
it would be a | 66 |
the size of the | 66 |
to be the case | 65 |
the greater number of | 65 |
each side of the | 65 |
the pedicels of the | 65 |
placed on the discs | 65 |
of the british association | 64 |
upper part of the | 64 |
of one of the | 64 |
in tierra del fuego | 64 |
on each side of | 64 |
the upper part of | 64 |
it would have been | 63 |
the centre of the | 63 |
at the bottom of | 63 |
the character of the | 62 |
is the case with | 62 |
it is said that | 62 |
the mouth of the | 62 |
the action of the | 62 |
from a letter to | 62 |
in some of the | 62 |
in regard to the | 62 |
as soon as the | 61 |
the level of the | 61 |
the descent of man | 61 |
species of the same | 61 |
th of an inch | 60 |
at the present day | 60 |
what you say about | 60 |
could not have been | 59 |
the position of the | 59 |
many thanks for your | 59 |
the state of the | 59 |
the course of a | 58 |
i have no doubt | 58 |
i am very much | 58 |
i hope you will | 58 |
variation of animals and | 58 |
that it would be | 58 |
can be no doubt | 57 |
it is difficult to | 56 |
much obliged for your | 56 |
the lower part of | 56 |
it is certain that | 55 |
to hear that you | 55 |
informs me that he | 55 |
the races of man | 55 |
i do not suppose | 55 |
edition of the origin | 55 |
be accounted for by | 54 |
in the form of | 54 |
in the united states | 54 |
with regard to the | 54 |
i am informed by | 54 |
an account of the | 54 |
the greater part of | 53 |
the foot of the | 53 |
infusion of raw meat | 53 |
of the lower animals | 52 |
at the base of | 52 |
in the morning we | 52 |
one side of the | 52 |
he wrote to sir | 52 |
be no doubt that | 52 |
the shape of the | 51 |
one part of the | 51 |
after an interval of | 51 |
the publication of the | 51 |
to thank you for | 50 |
the bases of the | 50 |
lower part of the | 50 |
i am glad to | 50 |
charles darwin to w | 50 |
i am going to | 50 |
on the habits of | 50 |
was published in the | 50 |
in the same way | 49 |
so it is with | 49 |
on the banks of | 49 |
than in the female | 49 |
extract from a letter | 49 |
in the life and | 48 |
theory of natural selection | 48 |
of the royal society | 48 |
of the voyage of | 48 |
all parts of the | 48 |
on the opposite side | 48 |
of the sixth cirrus | 48 |
the males of the | 48 |
darwin to asa gray | 48 |
to believe that the | 48 |
wrote to sir j | 48 |
the inhabitants of the | 48 |
seems to me a | 47 |
it is well known | 47 |
we may conclude that | 47 |
charles darwin to asa | 47 |
the summit of the | 47 |
this part of the | 47 |
on account of the | 47 |
occurred to me that | 46 |
the course of the | 46 |
solution of carbonate of | 46 |
i have not been | 46 |
do not think that | 46 |
the effects of the | 46 |
to me to be | 46 |
i should be very | 46 |
at the cape of | 46 |
might have been expected | 46 |
so kind as to | 46 |
the origin of the | 46 |
the history of the | 46 |
the banks of the | 46 |
am very much obliged | 46 |
difference of colour in | 45 |
that this is the | 45 |
i have been much | 45 |
on the authority of | 45 |
of the same genus | 45 |
i am inclined to | 45 |
on the th of | 45 |
in the colour of | 44 |
on the glands of | 44 |
have been able to | 44 |
the strait of magellan | 44 |
manner in which the | 44 |
the growth of the | 44 |
i am much obliged | 44 |
i thank you for | 44 |
at right angles to | 44 |
the movements of the | 44 |
the theory of natural | 44 |
the appearance of the | 44 |
as well as in | 44 |
it is a very | 43 |
i shall be very | 43 |
i do not doubt | 43 |
in the british museum | 43 |
as i hear from | 43 |
the contents of the | 43 |
as well as of | 43 |
the following extract from | 43 |
members of the same | 43 |
leaves were immersed in | 43 |
opposite sides of the | 43 |
to that of the | 42 |
in life and letters | 42 |
accounted for by the | 42 |
direct action of the | 42 |
the members of the | 41 |
to which they are | 41 |
as far as we | 41 |
of the exterior tentacles | 41 |
i have seen a | 41 |
of ammonia to of | 41 |
i was led to | 41 |
as it seems to | 41 |
of phosphate of ammonia | 41 |
on the theory of | 41 |
in the sexes of | 41 |
very glad to hear | 41 |
above the level of | 41 |
i am sure that | 41 |
the number of the | 41 |
i have not yet | 41 |
ammonia to of water | 41 |
in one of the | 40 |
and i do not | 40 |
the struggle for existence | 40 |
each in thirty minims | 40 |
is well known that | 40 |
in accordance with the | 40 |
placed on the glands | 40 |
as that of the | 40 |
than those of the | 40 |
the habits of the | 40 |
glad to hear that | 40 |
than that of the | 40 |
of colour in the | 40 |
on the same subject | 39 |
the following letter refers | 39 |
i am sure i | 39 |
level of the sea | 39 |
thank you for the | 39 |
the colours of the | 39 |
a letter to sir | 39 |
the difference between the | 39 |
that i do not | 39 |
of the conditions of | 39 |
for the purpose of | 39 |
meeting of the british | 39 |
that there is a | 39 |
as one of the | 39 |
on the summit of | 39 |
in thirty minims of | 39 |
received of a grain | 39 |
do not believe that | 39 |
an inch in diameter | 39 |
have the power of | 39 |
the individuals of the | 39 |
is given in the | 39 |
we shall hereafter see | 38 |
obliged to you for | 38 |
does not seem to | 38 |
on the number of | 38 |
that i have not | 38 |
i have heard of | 38 |
on the shores of | 38 |
that it is not | 38 |
the tips of the | 38 |
on the subject of | 38 |
changed conditions of life | 38 |
we may infer that | 38 |
at the head of | 38 |
i feel sure that | 38 |
a few of the | 38 |
we shall presently see | 37 |
it seemed to me | 37 |
told me that he | 37 |
for a short time | 37 |
of the two sexes | 37 |
at the height of | 37 |
male than in the | 37 |
is probable that the | 37 |
the sides of the | 37 |
in the structure of | 37 |
the top of the | 37 |
expression of the emotions | 37 |
the use of the | 37 |
to sir joseph hooker | 37 |
the first edition of | 37 |
at the foot of | 37 |
very much obliged for | 37 |
in the male than | 37 |
to the conclusion that | 37 |
within the limits of | 37 |
sexual differences in the | 37 |
as a general rule | 37 |
roads of glen roy | 37 |
on the effects of | 37 |
i should have thought | 37 |
on the colours of | 37 |
the second and third | 37 |
differ from each other | 37 |
parts of the body | 37 |
to say that i | 37 |
on the development of | 36 |
that it is a | 36 |
in the evening we | 36 |
different parts of the | 36 |
am much obliged for | 36 |
in the last chapter | 36 |
the whole of the | 36 |
informs me that the | 36 |
parallel roads of glen | 36 |
am very glad to | 36 |
in the upper part | 36 |
as i am informed | 36 |
he seems to have | 36 |
on the west coast | 36 |
seems to me to | 36 |
on one side of | 36 |
it is remarkable that | 36 |
i have just finished | 36 |
as we shall see | 36 |
i am sorry to | 36 |
that some of the | 36 |
i may add that | 36 |
the possession of the | 36 |
the male of the | 36 |
i wish i had | 36 |
the male than in | 36 |
it will be a | 36 |
the species of the | 36 |
have been much interested | 35 |
the male and female | 35 |
sexual difference in the | 35 |
the first and second | 35 |
that i did not | 35 |
in a straight line | 35 |
on the borders of | 35 |
i have had a | 35 |
the two sexes of | 35 |
in most of the | 35 |
the scuta and terga | 35 |
other parts of the | 35 |
as i can judge | 35 |
the early part of | 35 |
with that of the | 35 |
and at the same | 35 |
during the voyage of | 35 |
in nearly the same | 34 |
it is clear that | 34 |
pugnacity of the male | 34 |
same manner as the | 34 |
early in the morning | 34 |
the second edition of | 34 |
very much like to | 34 |
i should not have | 34 |
the sake of protection | 34 |
to the geological society | 34 |
elevation of the land | 34 |
the number of species | 34 |
species of the genus | 33 |
magazine of natural history | 33 |
i shall have to | 33 |
to of water were | 33 |
and the lower animals | 33 |
the differences between the | 33 |
he wrote to mr | 33 |
as if they had | 33 |
that i should be | 33 |
in the highest degree | 33 |
for the first time | 33 |
and i am sure | 33 |
the origin of man | 33 |
am informed by mr | 33 |
of the first cirrus | 33 |
the cause of the | 33 |
the limits of the | 33 |
i should very much | 33 |
the segments of the | 33 |
in the first place | 33 |
of the sexes of | 33 |
following letter refers to | 33 |
do not think i | 32 |
in the second edition | 32 |
in the first edition | 32 |
the characters of the | 32 |
me that he has | 32 |
man and the lower | 32 |
and magazine of natural | 32 |
on board the beagle | 32 |
that there is no | 32 |
on the fertilisation of | 32 |
some of the species | 32 |
but i have not | 32 |
in this case the | 32 |
the parallel roads of | 32 |
by far the most | 32 |
we do not know | 32 |
if they had been | 32 |
it must have been | 32 |
placed on a leaf | 32 |
the inflection of the | 32 |
of the geological society | 32 |
to a height of | 32 |
seems to me that | 32 |
a letter to mr | 32 |
belonging to the same | 32 |
as i have seen | 32 |
the pedicel of the | 32 |
of the length of | 32 |
without the aid of | 32 |
of the same kind | 32 |
be borne in mind | 32 |
on the surface of | 32 |
new edition of the | 32 |
i am very sorry | 32 |
bits of meat were | 32 |
had it not been | 32 |
that of the female | 32 |
charles darwin to a | 32 |
i have been very | 32 |
in front of the | 32 |
should very much like | 31 |
separated from each other | 31 |
in the two sexes | 31 |
the proportion of the | 31 |
of the zoological society | 31 |
in the male of | 31 |
between man and the | 31 |
greater part of the | 31 |
far as we can | 31 |
the young of both | 31 |
the of a grain | 31 |
to the action of | 31 |
would not have been | 31 |
the membrane of the | 31 |
one part of carbonate | 31 |
my father wrote to | 31 |
at the time of | 31 |
the presence of the | 31 |
to account for the | 31 |
survival of the fittest | 31 |
the arrangement of the | 31 |
young of both sexes | 31 |
a long series of | 31 |
with those of the | 31 |
and it is a | 31 |
but i did not | 31 |
the horns of the | 31 |
the first part of | 31 |
following extract from a | 31 |
at a very early | 31 |
been much interested by | 31 |
so as to be | 31 |
that it is the | 31 |
the height of the | 31 |
of the united states | 31 |
was very glad to | 31 |
of two or three | 31 |
to me that the | 30 |
middle of the day | 30 |
thirty minims of a | 30 |
the opposite sides of | 30 |
we have seen in | 30 |
i wish i could | 30 |
the head of a | 30 |
water were placed on | 30 |
thank you cordially for | 30 |
the exception of the | 30 |
to the end of | 30 |
in comparison with the | 30 |
there can be little | 30 |
the beauty of the | 30 |
part of carbonate of | 30 |
letter to sir j | 30 |
i am indebted to | 30 |
have seen in the | 30 |
the males of some | 30 |
is said to be | 30 |
in all parts of | 30 |
but it is not | 30 |
can be little doubt | 30 |
may be said to | 30 |
in proportion to the | 30 |
the form of a | 30 |
second edition of the | 30 |
was one of the | 30 |
the distribution of the | 30 |
so that each received | 29 |
drops of a solution | 29 |
in colour between the | 29 |
to a large extent | 29 |
that they have been | 29 |
i have just read | 29 |
the reception of the | 29 |
under the name of | 29 |
the glands on the | 29 |
the result of the | 29 |
of water were placed | 29 |
the apex of the | 29 |
very many thanks for | 29 |
this seems to me | 29 |
the west coast of | 29 |
in a future chapter | 29 |
is due to the | 29 |
of the second cirrus | 29 |
i was told that | 29 |
send you a copy | 29 |
numerical proportion of the | 29 |
it might have been | 29 |
have no doubt that | 29 |
feet above the sea | 29 |
secondary sexual characters of | 29 |
action of the conditions | 29 |
over and over again | 29 |
it is a most | 29 |
the males and females | 29 |
but it would be | 29 |
the sexes in the | 29 |
in different parts of | 29 |
in the west indies | 29 |
i do not see | 29 |
common to both sexes | 29 |
cells of the tentacles | 29 |
the case of a | 29 |
the formation of the | 29 |
it not been for | 29 |
of a grain of | 29 |
on the nature of | 29 |
the varieties of the | 29 |
contents of the cells | 28 |
am glad to hear | 28 |
in the vegetable kingdom | 28 |
i have been able | 28 |
in the autumn of | 28 |
of the same family | 28 |
the latter part of | 28 |
the natural history of | 28 |
that the males of | 28 |
may be seen in | 28 |
of the existence of | 28 |
do not know how | 28 |
a great deal of | 28 |
i should have been | 28 |
the shores of the | 28 |
at the age of | 28 |
be very glad to | 28 |
on the pugnacity of | 28 |
on opposite sides of | 28 |
the fertilisation of orchids | 28 |
of secondary sexual characters | 28 |
i am extremely glad | 28 |
there is reason to | 28 |
on the leaves of | 28 |
far as i know | 28 |
bear in mind that | 28 |
four leaves were immersed | 28 |
if you do not | 28 |
an infusion of raw | 28 |
seems to me very | 28 |
a vast number of | 28 |
from each other in | 28 |
the edge of the | 28 |
the first pair of | 28 |
carbonate of ammonia to | 28 |
two or three times | 28 |
i may mention that | 28 |
on the principle of | 28 |
various parts of the | 28 |
i was very glad | 28 |
was not able to | 28 |
that it was a | 28 |
upper surface of the | 27 |
in the centre of | 27 |
we see that the | 27 |
every part of the | 27 |
as wide as the | 27 |
the course of time | 27 |
the sexes of the | 27 |
of the inhabitants of | 27 |
a part of the | 27 |
be attributed to the | 27 |
as i have been | 27 |
difference in the colour | 27 |
do not doubt that | 27 |
and i have been | 27 |
evidence in favour of | 27 |
in exactly the same | 27 |
we thus see that | 27 |
colour of the skin | 27 |
during the breeding season | 27 |
in water at o | 27 |
on the same principle | 27 |
on the other side | 27 |
it is known that | 27 |
the upper surface of | 27 |
are said to be | 27 |
from that of the | 27 |
cells of the pedicels | 27 |
and this is the | 27 |
which i have seen | 27 |
the walls of the | 27 |
to say that the | 27 |
of the higher animals | 27 |
the under side of | 27 |
the face of the | 27 |
of the same size | 27 |
we shall see in | 27 |
but it is a | 27 |
in the development of | 27 |
the blade of the | 26 |
to one of the | 26 |
greater number of the | 26 |
zoology of the voyage | 26 |
the valves of the | 26 |
the time when the | 26 |
as far as my | 26 |
it would appear that | 26 |
there must have been | 26 |
this point of view | 26 |
if it had been | 26 |
it is possible that | 26 |
here and there a | 26 |
the fact of the | 26 |
i think that i | 26 |
on the opposite sides | 26 |
as it appears to | 26 |
in favour of the | 26 |
i believe that the | 26 |
of the nature of | 26 |
at the rate of | 26 |
every now and then | 26 |
to the linnean society | 26 |
the valley of the | 26 |
i have read your | 26 |
is by no means | 26 |
i have just received | 26 |
difference between the sexes | 26 |
it can hardly be | 26 |
the movement of the | 26 |
a greater number of | 26 |
as might have been | 26 |
the leaves of the | 26 |
part of the world | 26 |
on the proportion of | 26 |
we are led to | 26 |
in the presence of | 26 |
from the number of | 26 |
blade of the leaf | 26 |
manner in which you | 26 |
i am heartily glad | 26 |
the conditions to which | 26 |
of the species of | 26 |
inflection of the tentacles | 26 |
which i have read | 26 |
a copy of the | 26 |
three leaves were immersed | 26 |
the direction of the | 26 |
not been able to | 26 |
i can see no | 26 |
have seen that the | 26 |
the thickness of the | 26 |
it is with the | 26 |
thank you sincerely for | 26 |
of the development of | 26 |
the distance of a | 26 |
of an inch long | 26 |
i have been assured | 26 |
have not been able | 26 |
it does not appear | 26 |
on the influence of | 26 |
it is a great | 26 |
i have met with | 26 |
to the present day | 26 |
as may be seen | 26 |
membrane of the peduncle | 26 |
by the pollen of | 25 |
to the same sex | 25 |
but i have been | 25 |
in some few cases | 25 |
the difference in the | 25 |
should much like to | 25 |
and this is a | 25 |
with some of the | 25 |
i cannot but think | 25 |
in the males of | 25 |
the expression of the | 25 |
a solution of carbonate | 25 |
the way in which | 25 |
as we shall hereafter | 25 |
one after the other | 25 |
not know whether you | 25 |
in the neighbourhood of | 25 |
much obliged to you | 25 |
by the action of | 25 |
and many of the | 25 |
in the proportion of | 25 |
right angles to the | 25 |
part of the body | 25 |
i have not seen | 25 |
he told me that | 25 |
a considerable number of | 25 |
on the head of | 25 |
two or three days | 25 |
in the possession of | 25 |
the three posterior pair | 25 |
be said to be | 25 |
reason to suppose that | 25 |
the variation of animals | 25 |
i did not know | 25 |
appear to have been | 25 |
much like to hear | 25 |
life and letters of | 25 |
i hear from mr | 25 |
it occurred to me | 25 |
i was not able | 25 |
of movement in plants | 25 |
nearly the same manner | 25 |
a greater or less | 25 |
on the side of | 25 |
the elevation of the | 25 |
in contact with the | 25 |
meat were placed on | 25 |
there is no reason | 25 |
the orifice of the | 25 |
be the case with | 25 |
be the result of | 24 |
a new edition of | 24 |
as we shall presently | 24 |
is said that the | 24 |
referred to in the | 24 |
the pugnacity of the | 24 |
in which the sexes | 24 |
inclined to think that | 24 |
no doubt that the | 24 |
side of the disc | 24 |
in the origin of | 24 |
first pair of cirri | 24 |
with one of the | 24 |
acquired through sexual selection | 24 |
on the back of | 24 |
as soon as i | 24 |
of the first pair | 24 |
the zoology of the | 24 |
the inherited effects of | 24 |
the hair on the | 24 |
pedicels of the sixth | 24 |
of the linnean society | 24 |
to the belief that | 24 |
there is a very | 24 |
in other parts of | 24 |
three or four times | 24 |
does not appear to | 24 |
of the geological record | 24 |
shall be able to | 24 |
of male and female | 24 |
far as i have | 24 |
the borders of the | 24 |
a paper on the | 24 |
would be a great | 24 |
i want to know | 24 |
on the under side | 24 |
but there is no | 24 |
how it is that | 24 |
i am aware that | 24 |
for the chance of | 24 |
be so kind as | 24 |
to suppose that the | 24 |
which has interested me | 24 |
from side to side | 24 |
in speaking of the | 24 |
the cape de verd | 24 |
the belief that the | 24 |
from the time when | 24 |
dimorphic and trimorphic plants | 24 |
on the upper surface | 24 |
than the posterior ramus | 24 |
in the cells of | 24 |
the success of the | 24 |
to hear what you | 24 |
in which the males | 24 |
i am sure you | 24 |
is no reason to | 24 |
glands of the disc | 23 |
most of the species | 23 |
through the action of | 23 |
sexual difference of colour | 23 |
in a similar manner | 23 |
and as soon as | 23 |
imperfection of the geological | 23 |
the duke of argyll | 23 |
for the possession of | 23 |
in the same species | 23 |
on the formation of | 23 |
to look at the | 23 |
in the economy of | 23 |
on the point of | 23 |
the condition of the | 23 |
that he could not | 23 |
are more or less | 23 |
by the fact that | 23 |
i should much like | 23 |
centre of the leaf | 23 |
would it not be | 23 |
i did not think | 23 |
may be compared to | 23 |
it is evident that | 23 |
during the glacial period | 23 |
is not the case | 23 |
thickly clothed with spines | 23 |
descended from the same | 23 |
the margins of the | 23 |
you would like to | 23 |
of the structure of | 23 |
aggregation of the protoplasm | 23 |
as large as a | 23 |
me that he had | 23 |
turned out to be | 23 |
be little doubt that | 23 |
proportions of the sexes | 23 |
do not know what | 23 |
of the brain in | 23 |
the exception of a | 23 |
in two or three | 23 |
in the history of | 23 |
but this is not | 23 |
in this latter case | 23 |
the early progenitors of | 23 |
in the size of | 23 |
the same kind of | 23 |
in the time of | 23 |
in the lower part | 23 |
as well as a | 23 |
from the analogy of | 23 |
not at all affected | 23 |
like that of the | 23 |
in the conditions of | 23 |
the beginning of the | 23 |
secondary sexual characters in | 23 |
to give up the | 23 |
compared with that of | 23 |
the author of the | 23 |
only two or three | 23 |
between the first and | 23 |
of the southern hemisphere | 23 |
is reason to believe | 23 |
quite new to me | 23 |
between two and three | 22 |
from each other by | 22 |
published in life and | 22 |
the outside of the | 22 |
it is a singular | 22 |
the young of the | 22 |
i had a letter | 22 |
and in the case | 22 |
part of the year | 22 |
on some of the | 22 |
on the backs of | 22 |
of the habits of | 22 |
it appeared to me | 22 |
i do not mean | 22 |
at the present time | 22 |
as shown by the | 22 |
its digestion by drosera | 22 |
course of a few | 22 |
on the colour of | 22 |
to the amount of | 22 |
i have never seen | 22 |
been formed by the | 22 |
in the early part | 22 |
only of a grain | 22 |
breeds of the fowl | 22 |
should be very glad | 22 |
if i do not | 22 |
during the summer of | 22 |
part of the peduncle | 22 |
the royal society of | 22 |
the geology of the | 22 |
the antiquity of man | 22 |
far as i could | 22 |
ought to have been | 22 |
one of the greatest | 22 |
appears to me that | 22 |
the process of aggregation | 22 |
which seems to me | 22 |
the midst of the | 22 |
in various parts of | 22 |
for the adductor muscle | 22 |
were not in the | 22 |
and in this case | 22 |
between the sexes of | 22 |
in some cases the | 22 |
colour between the sexes | 22 |
there seems to be | 22 |
on the variation of | 22 |
it would be difficult | 22 |
i think i have | 22 |
half as long as | 22 |
to the theory of | 22 |
each other in the | 22 |
the back of the | 22 |
there can hardly be | 22 |
have been formed by | 22 |
but it may be | 22 |
the crest of the | 22 |
in the lower animals | 22 |
i think you will | 22 |
of the same individual | 22 |
may be attributed to | 22 |
may conclude that the | 22 |
and some of the | 22 |
the power of movement | 22 |
in the least affected | 22 |
the date of the | 22 |
sexual differences of colour | 22 |
on the action of | 22 |
in the shape of | 22 |
the struggle for life | 22 |
that i should have | 22 |
it is a remarkable | 22 |
action of changed conditions | 22 |
with the upper part | 22 |
to those of the | 22 |
of the appearance of | 21 |
the existence of a | 21 |
with their own pollen | 21 |
i am delighted to | 21 |
in the animal kingdom | 21 |
it is necessary to | 21 |
of man and the | 21 |
as bearing on the | 21 |
i am convinced that | 21 |
that part of the | 21 |
a very early period | 21 |
i have been led | 21 |
differences of colour in | 21 |
the importance of the | 21 |
would have been a | 21 |
the secretion of drosera | 21 |
to the origin of | 21 |
i think i shall | 21 |
north and south america | 21 |
would have to be | 21 |
after the publication of | 21 |
it has often been | 21 |
the glands of drosera | 21 |
under a high power | 21 |
the subject of the | 21 |
in the spring of | 21 |
limited in their transmission | 21 |
have been exposed to | 21 |
as if it had | 21 |
first edition of the | 21 |
a certain amount of | 21 |
in the direction of | 21 |
be a doubt that | 21 |
differences between the sexes | 21 |
in which they are | 21 |
of the males of | 21 |
thank you much for | 21 |
of which i have | 21 |
the discs of six | 21 |
i quite agree with | 21 |
transmitted to both sexes | 21 |
within the cells of | 21 |
that there was no | 21 |
the tail of the | 21 |
of new south wales | 21 |
the muscles of the | 21 |
some of the lower | 21 |
basal segments of the | 21 |
the leaves in the | 21 |
more numerous than the | 21 |
to an extraordinary degree | 21 |
if i had been | 21 |
each received of a | 21 |
has the power of | 21 |
in minims of a | 21 |
not seem to me | 21 |
be seen in the | 21 |
on the one hand | 21 |
be worth while to | 21 |
in the summer of | 21 |
i thank you sincerely | 21 |
my dear old friend | 21 |
in the act of | 21 |
in this part of | 21 |
to the formation of | 21 |
that most of the | 21 |
that you have been | 21 |
the life of the | 21 |
a trace of inflection | 21 |
the meaning of the | 21 |
of the glacial period | 21 |
we know of the | 21 |
or not at all | 21 |
of the theory of | 21 |
the mental powers of | 21 |
acted on by the | 21 |
in a few days | 21 |
of meat were placed | 21 |
in the latter case | 21 |
parts of south america | 21 |
the imperfection of the | 21 |
a change in the | 21 |
other species of the | 21 |
discs of six leaves | 21 |
it appears that the | 21 |
in a former chapter | 21 |
of the rio negro | 21 |
that each received of | 21 |
exactly the same manner | 21 |
i shall be able | 21 |
charles darwin to t | 21 |
the aid of a | 21 |
two of the leaves | 21 |
in the number of | 21 |
a few drops of | 21 |
on both sides of | 21 |
look at it as | 21 |
of the truth of | 20 |
all the individuals of | 20 |
the british association at | 20 |
some few of the | 20 |
we can see that | 20 |
placed in a solution | 20 |
so that it is | 20 |
and that it is | 20 |
all the species of | 20 |
colour in the sexes | 20 |
it was necessary to | 20 |
it would be very | 20 |
in the position of | 20 |
part of the carbonate | 20 |
as far south as | 20 |
may be considered as | 20 |
the course of hrs | 20 |
the theory of descent | 20 |
during the act of | 20 |
of the leaves of | 20 |
i believe to be | 20 |
the force of the | 20 |
and on the other | 20 |
but i have no | 20 |
hardly be a doubt | 20 |
the absence of the | 20 |
twice as long as | 20 |
on the third day | 20 |
i cannot doubt that | 20 |
one of the two | 20 |
am inclined to think | 20 |
the second part of | 20 |
the end of his | 20 |
of the carbonate to | 20 |
my father used to | 20 |
it was evident that | 20 |
a weak solution of | 20 |
of the motor impulse | 20 |
the spines on the | 20 |
at the royal institution | 20 |
there is a large | 20 |
feet above the level | 20 |
i was surprised to | 20 |
to the direct action | 20 |
it seems probable that | 20 |
of the falkland islands | 20 |
relative size of the | 20 |
that it was not | 20 |
a bit of meat | 20 |
on the stridulation of | 20 |
seems to be a | 20 |
to vary in the | 20 |
the economy of nature | 20 |
in the same individual | 20 |
the sack of the | 20 |
it would be an | 20 |
of the power of | 20 |
i thank you cordially | 20 |
in which the male | 20 |
in the struggle for | 20 |
a letter to dr | 20 |
for a few minutes | 20 |
no reason to believe | 20 |
and i thank you | 20 |
in the formation of | 20 |
that many of the | 20 |
corresponding periods of life | 20 |
with a row of | 20 |
do not suppose that | 20 |
a copy of my | 20 |
the side of the | 20 |
understand how it is | 20 |
to me that you | 20 |
that i have never | 20 |
which they have been | 20 |
as well as i | 20 |
that there is some | 20 |
hear that you are | 20 |
to the presence of | 20 |
like that of a | 20 |
the brain of a | 20 |
to the foot of | 20 |
have no reason to | 20 |
from the effects of | 20 |
the doctrine of evolution | 20 |
the bed of the | 20 |
we may infer from | 20 |
surface of the water | 20 |
seems to be the | 20 |
arm of the sea | 20 |
is not at all | 20 |
changes in the conditions | 20 |
the females of the | 20 |
it is not surprising | 20 |
and that of the | 20 |
under the command of | 20 |
in a lesser degree | 20 |
those of the female | 20 |
and it would be | 20 |
the adductor scutorum muscle | 20 |
action of carbonate of | 20 |
the same way as | 20 |
as well as to | 20 |
vary in the same | 20 |
which they are attached | 20 |
the survival of the | 20 |
the fertilisation of flowers | 19 |
the amount of difference | 19 |
of the same group | 19 |
good reason to believe | 19 |
and i believe that | 19 |
on the top of | 19 |
number of species of | 19 |
letter to asa gray | 19 |
on the same side | 19 |
the coast of patagonia | 19 |
the belief in the | 19 |
other part of the | 19 |
in man and the | 19 |
quarters of the world | 19 |
but it does not | 19 |
a great number of | 19 |
two or three years | 19 |
it was shown that | 19 |
the new edition of | 19 |
i am glad that | 19 |
from a letter of | 19 |
not being able to | 19 |
i have lately been | 19 |
in the journal of | 19 |
naturalist on the amazons | 19 |
no reason to suppose | 19 |
in the nature of | 19 |
it is not probable | 19 |
of the pedicel of | 19 |
to make out the | 19 |
so far as to | 19 |
to the birds of | 19 |
very glad to see | 19 |
millionth of a grain | 19 |
of the peduncle is | 19 |
i have come to | 19 |
i am glad you | 19 |
size of the sexes | 19 |
the immutability of species | 19 |
second and third cirri | 19 |
hooker to charles darwin | 19 |
of the outer tentacles | 19 |
hear that you have | 19 |
that you will not | 19 |
the opposite side of | 19 |
i wish you would | 19 |
send by this post | 19 |
say that i have | 19 |
which i have been | 19 |
be very curious to | 19 |
on the distribution of | 19 |
this refers to the | 19 |
i send by this | 19 |
of the galapagos archipelago | 19 |
to the study of | 19 |
the time of the | 19 |
the name of the | 19 |
had the power of | 19 |
in the present chapter | 19 |
like those of the | 19 |
to the number of | 19 |
a quarter of an | 19 |
in any part of | 19 |
on the same plant | 19 |
if we look to | 19 |
glad that you have | 19 |
the cause of this | 19 |
natural means of selection | 19 |
a variety of the | 19 |
it is scarcely possible | 19 |
the pollen of the | 19 |
change of colour in | 19 |
and one of the | 19 |
the geographical distribution of | 19 |
appears to have been | 19 |
to be able to | 19 |
to think that i | 19 |
at the linnean society | 19 |
the upper and lower | 19 |
i have seen the | 19 |
immersed in ninety minims | 19 |
of most of the | 19 |
in the evening i | 19 |
of one of these | 19 |
by the absorption of | 19 |
the bones of the | 19 |
i ought to have | 19 |
scales on the peduncle | 19 |
the protoplasm in the | 19 |
but i am not | 19 |
the fact that the | 19 |
the seeds of the | 19 |
i have written to | 19 |
any part of the | 19 |
would be difficult to | 19 |
a motor impulse to | 19 |
there would be no | 19 |
in the valley of | 19 |
i had no idea | 19 |
for your very kind | 19 |
as i have said | 19 |
way in which he | 18 |
the outline of the | 18 |
to show that the | 18 |
the waters of the | 18 |
an important part in | 18 |
the age of the | 18 |
the gastric juice of | 18 |
on the fertility of | 18 |
manner in which they | 18 |
we have just seen | 18 |
out of the question | 18 |
sides of the same | 18 |
the act of crossing | 18 |
of the same sex | 18 |
of the lower whorl | 18 |
the view of the | 18 |
is the result of | 18 |
a grain of the | 18 |
different from that of | 18 |
of the male is | 18 |
protoplasm within the cells | 18 |
of many of the | 18 |
as far as it | 18 |
and the glands were | 18 |
that is to say | 18 |
on variation under domestication | 18 |
i look at as | 18 |
cape de verd islands | 18 |
from what i have | 18 |
as we have just | 18 |
i have heard from | 18 |
the carbonate to of | 18 |
to which i have | 18 |
we have no reason | 18 |
of the species are | 18 |
it is that the | 18 |
the following letter was | 18 |
where there is no | 18 |
it will be seen | 18 |
the extremity of the | 18 |
of the action of | 18 |
early progenitors of man | 18 |
one third of the | 18 |
of the principle of | 18 |
and i hope that | 18 |
evidence on this head | 18 |
to write to you | 18 |
many thanks for the | 18 |
in some species of | 18 |
i am not sure | 18 |
a few years ago | 18 |
it was impossible to | 18 |
the surface of attachment | 18 |
the body of the | 18 |
in the malay archipelago | 18 |
should like to see | 18 |
as those of the | 18 |
royal society of edinburgh | 18 |
be due to the | 18 |
that it has been | 18 |
in the morning i | 18 |
far as i am | 18 |
difference of the sexes | 18 |
can hardly be a | 18 |
limits of the same | 18 |
not appear to be | 18 |
is a singular fact | 18 |
the leaves of drosera | 18 |
given in the origin | 18 |
we may feel sure | 18 |
in the beginning of | 18 |
that i have seen | 18 |
long as the capitulum | 18 |
should like to hear | 18 |
two or three of | 18 |
carbonate of ammonia on | 18 |
have not as yet | 18 |
i have never been | 18 |
on the mountains of | 18 |
at corresponding periods of | 18 |
male and female births | 18 |
the evil effects of | 18 |
to me that i | 18 |
of the descent of | 18 |
on the outside of | 18 |
but i will not | 18 |
and a good deal | 18 |
and i have heard | 18 |
i have said that | 18 |
all that i have | 18 |
to the length of | 18 |
the truth of the | 18 |
confined to the males | 18 |
it is obvious that | 18 |
towards the close of | 18 |
acquired by the males | 18 |
of the size of | 18 |
in the bay of | 18 |
is not surprising that | 18 |
the young and the | 18 |
and this seems to | 18 |
years of his life | 18 |
and in some cases | 18 |
the formation of new | 18 |
at the house of | 18 |
visited during the voyage | 18 |
are well known to | 18 |
the southern part of | 18 |
for the good of | 18 |
power of movement in | 18 |
of the second edition | 18 |
in the following year | 18 |
i am surprised that | 18 |
may be compared with | 18 |
as a means of | 18 |
the offspring of the | 18 |
seemed to me a | 18 |
were then placed in | 18 |
in a rudimentary condition | 18 |
carbonate to of water | 18 |
proportion of male and | 18 |
will be able to | 18 |
opposite side of the | 18 |
the temperature of the | 18 |
glad to hear of | 18 |
in such a manner | 18 |
but in this case | 18 |
the flora of the | 18 |
a quarter of a | 18 |
and so it is | 18 |
in the present essay | 18 |
am very sorry to | 18 |
in all these cases | 17 |
basal margin of the | 17 |
i owe to the | 17 |
should like to know | 17 |
than in any other | 17 |
to the same conclusion | 17 |
have been glad to | 17 |
the constitution of the | 17 |
be distinguished from the | 17 |
have just received your | 17 |
the formation of a | 17 |
i must thank you | 17 |
i have been particularly | 17 |
the same species of | 17 |
in their native country | 17 |
with the lower part | 17 |
in the same state | 17 |
one on each side | 17 |
in the first generation | 17 |
as i have already | 17 |
letter refers to the | 17 |
plants of the same | 17 |
the coast of chile | 17 |
i believe that i | 17 |
cases in which the | 17 |
on the volcanic islands | 17 |
is not probable that | 17 |
as soon as it | 17 |
this is a very | 17 |
i have just been | 17 |
the geological structure of | 17 |
sexes and young of | 17 |
a proof of the | 17 |
should not have been | 17 |
this would have been | 17 |
we must suppose that | 17 |
seems to me the | 17 |
display of plumage by | 17 |
i have attempted to | 17 |
were then placed on | 17 |
under this point of | 17 |
it is doubtful whether | 17 |
it is said to | 17 |
motor impulse to the | 17 |
which must have been | 17 |
that there should be | 17 |
the males of certain | 17 |
your remarks on the | 17 |
in the latitude of | 17 |
a few days ago | 17 |
others of the same | 17 |
it may be added | 17 |
amount of difference between | 17 |
on the occurrence of | 17 |
i suppose that you | 17 |
it is asserted that | 17 |
when i think of | 17 |
the value of the | 17 |
am sure you will | 17 |
i am sure it | 17 |
parts of the same | 17 |
seem to have been | 17 |
like those on the | 17 |
and i dare say | 17 |
from one of the | 17 |
than those on the | 17 |
the coast of brazil | 17 |
in their transmission to | 17 |
i believe it is | 17 |
in all the species | 17 |
the bright colours of | 17 |
some of the most | 17 |
the tip of the | 17 |
on this subject in | 17 |
what we know of | 17 |
the protoplasm within the | 17 |
i was much surprised | 17 |
the voyage of h | 17 |
has occurred to me | 17 |
the theory of the | 17 |
to me a very | 17 |
the close of the | 17 |
to you for your | 17 |
in ninety minims of | 17 |
in the chapter on | 17 |
an extract from a | 17 |
on the parallel roads | 17 |
am delighted to hear | 17 |
of the same variety | 17 |
the influence of the | 17 |
than to any other | 17 |
i was glad to | 17 |
in the first part | 17 |
the aggregation of the | 17 |
on one of the | 17 |
in a short time | 17 |
in the next chapter | 17 |
in the descent of | 17 |
on the question of | 17 |
shall be very curious | 17 |
sides of the body | 17 |
do not at all | 17 |
i think it was | 17 |
do you not think | 17 |
a letter to lyell | 17 |
branches of natural history | 17 |
on the use of | 17 |
not know how to | 17 |
for it is a | 17 |
to ask you to | 17 |
to a certain degree | 17 |
had a letter of | 17 |
in the following letter | 17 |
of the natural history | 17 |
will you be so | 17 |
varieties of the same | 17 |
to the development of | 17 |
towards the end of | 17 |
which i do not | 17 |
i have been so | 17 |
i may here mention | 17 |
i have endeavoured to | 17 |
you for your very | 17 |
the part of the | 17 |
glad to hear about | 17 |
is very difficult to | 17 |
the entire length of | 17 |
on the variability of | 17 |
this leads me to | 17 |
during these two years | 17 |
the basal margin of | 17 |
it ought to be | 17 |
the subsequent action of | 17 |
with the lower animals | 17 |
has interested me much | 17 |
that he did not | 17 |
we have also seen | 17 |
conditions to which they | 17 |
it is to be | 17 |
colours and nidification of | 17 |
shall be very glad | 17 |
to the growth of | 17 |
of the leaves were | 17 |
the review in the | 17 |
to the male sex | 17 |
natural history of the | 17 |
after an immersion of | 17 |
the point of view | 17 |
in the male and | 16 |
to the surface of | 16 |
i must think that | 16 |
in a direct line | 16 |
it is almost certain | 16 |
think that i have | 16 |
from the rest of | 16 |
on the progress of | 16 |
to me by mr | 16 |
the numerical proportion of | 16 |
throughout the animal kingdom | 16 |
do not suppose i | 16 |
of the posterior cirri | 16 |
under the head of | 16 |
in which the female | 16 |
from a photograph by | 16 |
the meeting of the | 16 |
on the same leaf | 16 |
their transmission to the | 16 |
at least in the | 16 |
i thank you most | 16 |
is shown in the | 16 |
i may here add | 16 |
the next day we | 16 |
and female births in | 16 |
the case of drosera | 16 |
the birds of australia | 16 |
from the want of | 16 |
i think it would | 16 |
on the geology of | 16 |
between three and four | 16 |
immersed in a solution | 16 |
ramus of the second | 16 |
there must be some | 16 |
as is well known | 16 |
in a slight degree | 16 |
to tierra del fuego | 16 |
of the same strength | 16 |
males and females of | 16 |
in one of his | 16 |
is scarcely possible to | 16 |
time of the year | 16 |
any other part of | 16 |
of the three posterior | 16 |
the other species of | 16 |
for the rest of | 16 |
absorbed by the glands | 16 |
of the pedicels of | 16 |
surface of the leaf | 16 |
in the usual manner | 16 |
cannot but think that | 16 |
is the more remarkable | 16 |
of the most important | 16 |
curious account of the | 16 |
do not appear to | 16 |
the edges of the | 16 |
the definite action of | 16 |
on a level with | 16 |
been acquired through sexual | 16 |
a strong taste for | 16 |
observations on south america | 16 |
wrote to sir joseph | 16 |
has been observed in | 16 |
in connection with the | 16 |
think it would be | 16 |
in the afternoon we | 16 |
in the absence of | 16 |
facts have been observed | 16 |
in different races of | 16 |
the presence of a | 16 |
to the south of | 16 |
in a like manner | 16 |
at an early age | 16 |
which there is a | 16 |
much interested by your | 16 |
what you think of | 16 |
i have nothing to | 16 |
between the bases of | 16 |
the backs of the | 16 |
with the aid of | 16 |
is enough to make | 16 |
two and a half | 16 |
on the edge of | 16 |
on my return home | 16 |
is well known to | 16 |
as soon as we | 16 |
i have not the | 16 |
it may be asked | 16 |
on the pairing of | 16 |
the crossing of distinct | 16 |
that i was not | 16 |
it would be superfluous | 16 |
a larger number of | 16 |
in the natural history | 16 |
of the hair on | 16 |
i was forced to | 16 |
i dare say you | 16 |
with its own pollen | 16 |
and i shall be | 16 |
appears to me a | 16 |
of the second and | 16 |
scales of the peduncle | 16 |
i have read with | 16 |
the margin of the | 16 |
we are indebted to | 16 |
by means of natural | 16 |
from a common stock | 16 |
and the number of | 16 |
in the length of | 16 |
that you will be | 16 |
the same time with | 16 |
it has been a | 16 |
slight changes in the | 16 |
numerical proportion of male | 16 |
from those of the | 16 |
it must not be | 16 |
have been led to | 16 |
so far as i | 16 |
i do not feel | 16 |
i was much struck | 16 |
to me to have | 16 |
i dare say i | 16 |
to me in the | 16 |
during the season of | 16 |
as long as they | 16 |
borne in mind that | 16 |
the union of two | 16 |
means of natural selection | 16 |
the sake of the | 16 |
i was much interested | 16 |
the case of plants | 16 |
that there must be | 16 |
the progress of the | 16 |
distance of a few | 16 |
so that they were | 16 |
as a proof of | 16 |
fluid within the cells | 16 |
to write to me | 16 |
there are a few | 16 |
which i did not | 16 |
the analogy of the | 16 |
of a distinct species | 16 |
leaves in the solution | 16 |
to think that the | 16 |
to each other in | 16 |
where there is a | 16 |
for some time in | 16 |
the voice of the | 16 |
it is hardly possible | 16 |
of the same race | 16 |
tierra del fuego and | 16 |
and in the other | 16 |
would have been the | 16 |
wallace to charles darwin | 16 |
come to the conclusion | 16 |
the case of man | 16 |
the summit of a | 16 |
at the mouth of | 16 |
the existence of the | 16 |
it would not be | 16 |
is almost certain that | 16 |
do not think it | 16 |
at about the same | 16 |
by the next morning | 15 |
take the trouble to | 15 |
i fear that you | 15 |
of three or four | 15 |
in which the females | 15 |
and as far as | 15 |
of the effects of | 15 |
can hardly doubt that | 15 |
as it at first | 15 |
to the present time | 15 |
leaf was placed in | 15 |
which is common to | 15 |
concluding remarks on the | 15 |
possession of the females | 15 |
of the basal segments | 15 |
the same time in | 15 |
the exception of one | 15 |
two and three hundred | 15 |
in favour of this | 15 |
the modification of species | 15 |
it does not seem | 15 |
this is not the | 15 |
be glad to hear | 15 |
the width of the | 15 |
solution of the carbonate | 15 |
on the power of | 15 |
are given in the | 15 |
on the lower surface | 15 |
and arguments for darwin | 15 |
i have been working | 15 |
paper on the subject | 15 |
from what we know | 15 |
i was unable to | 15 |
by one of the | 15 |
parts of the country | 15 |
the next day i | 15 |
containing of a grain | 15 |
the vocal organs of | 15 |
i can hardly doubt | 15 |
the plains of patagonia | 15 |
in the later editions | 15 |
the effects of a | 15 |
be said to have | 15 |
to me a most | 15 |
the following letter is | 15 |
the aid of selection | 15 |
of the other species | 15 |
the heat of the | 15 |
as if i had | 15 |
under side of the | 15 |
to hear of the | 15 |
you be so kind | 15 |
on the numerical proportion | 15 |
so as not to | 15 |
different races of man | 15 |
he wrote to dr | 15 |
into contact with the | 15 |
as i have done | 15 |
the action of carbonate | 15 |
for the development of | 15 |
of the british museum | 15 |
i was told by | 15 |
will have to be | 15 |
the facts given in | 15 |
very sorry to hear | 15 |
valves of the capitulum | 15 |
not be able to | 15 |
i was able to | 15 |
development of the horns | 15 |
the book was published | 15 |
thicker than the posterior | 15 |
believe that they are | 15 |
selection in relation to | 15 |
of the surrounding conditions | 15 |
there was no inflection | 15 |
it is one of | 15 |
late in the evening | 15 |
in many parts of | 15 |
very much obliged to | 15 |
the present state of | 15 |
the causes of the | 15 |
it is remarkable how | 15 |
i have heard him | 15 |
it at first appears | 15 |
that i have been | 15 |
than in the females | 15 |
at the upper end | 15 |
from some lower form | 15 |
have reason to believe | 15 |
that there must have | 15 |
the pacific and indian | 15 |
the several species of | 15 |
for the reception of | 15 |
i was at first | 15 |
like to hear what | 15 |
it has been remarked | 15 |
as soon as they | 15 |
as shown in the | 15 |
if i did not | 15 |
effects of close interbreeding | 15 |
we ought not to | 15 |
for your most kind | 15 |
i do not hear | 15 |
have the pleasure of | 15 |
at which i have | 15 |
i am greatly indebted | 15 |
be considered as a | 15 |
i shall not be | 15 |
of the geology of | 15 |
organic beings in a | 15 |
are not at all | 15 |
of a species of | 15 |
must have been a | 15 |
only a few of | 15 |
it is not so | 15 |
taste for the beautiful | 15 |
as we can see | 15 |
has interested me greatly | 15 |
it would be impossible | 15 |
in the first stage | 15 |
anterior ramus of the | 15 |
the whole subject of | 15 |
for two or three | 15 |
to which they have | 15 |
i have to thank | 15 |
pleasure to me to | 15 |
the effect of the | 15 |
we see this in | 15 |
than in the male | 15 |
glands of the exterior | 15 |
of the opposite sex | 15 |
it was very good | 15 |
the end of a | 15 |
he does not know | 15 |
on the breeding of | 15 |
at the point where | 15 |
am glad that you | 15 |
use and disuse of | 15 |
shall see in the | 15 |
the variability of the | 15 |
for the same purpose | 15 |
by the manner in | 15 |
it was a most | 15 |
and i think it | 15 |
the lower surface of | 15 |
we must believe that | 15 |
have been transmitted to | 15 |
the proportions of the | 15 |
a more or less | 15 |
the transmission of the | 15 |
are confined to the | 15 |
the strength of the | 15 |
action of sexual selection | 15 |
at what you say | 15 |
the same relation to | 15 |
the principle of evolution | 15 |
the principle of natural | 15 |
i should be glad | 15 |
to believe that this | 15 |
at work on the | 15 |
part of south america | 15 |
but we have no | 15 |
i think it is | 15 |
have been known to | 15 |
difference in colour between | 15 |
as long as it | 15 |
principle of natural selection | 15 |
the basal segments of | 15 |
i will give only | 15 |
sense of the word | 15 |
about of an inch | 15 |
the chance of your | 15 |
it is very difficult | 15 |
a day or two | 15 |
that the glands of | 15 |
a short account of | 15 |
with the basal margin | 15 |
is attached to the | 15 |
is owing to the | 15 |
of nearly the same | 15 |
that you would have | 15 |
delighted to hear that | 15 |
low in the scale | 15 |
do not wish to | 15 |
have no means of | 15 |
from a common progenitor | 15 |
there is no evidence | 15 |
of species of man | 15 |
of the same tribe | 15 |
i owe to you | 15 |
you have given me | 15 |
the two sides of | 15 |
there was not a | 15 |
so good as to | 15 |
it has been found | 15 |
than i could have | 15 |
pollen from a distinct | 15 |
gained through sexual selection | 15 |
hair on the head | 15 |
i did not see | 15 |
the size of a | 15 |
the isle of wight | 15 |
do not think any | 15 |
it deserves notice that | 14 |
were immersed in ninety | 14 |
am very glad that | 14 |
on account of their | 14 |
as a young man | 14 |
in mind that the | 14 |
ninety minims of a | 14 |
to an extreme degree | 14 |
thanking you for your | 14 |
that it will be | 14 |
say that i am | 14 |
the laws of inheritance | 14 |
foot of the cordillera | 14 |
from the glands of | 14 |
the bottom of a | 14 |
in my own mind | 14 |
should be very much | 14 |
part of the country | 14 |
that i shall be | 14 |
and i think that | 14 |
if you think it | 14 |
it is curious that | 14 |
i know of no | 14 |
bottom of the sea | 14 |
i have myself seen | 14 |
before the geological society | 14 |
that it was the | 14 |
the connection between the | 14 |
and in a lesser | 14 |
much more numerous than | 14 |
it is not a | 14 |
a discussion on the | 14 |
of the occludent margin | 14 |
twice as large as | 14 |
that one of the | 14 |
can hardly be considered | 14 |
the males alone of | 14 |
it is a more | 14 |
you say about my | 14 |
if this be so | 14 |
much obliged for the | 14 |
no doubt it is | 14 |
the female of the | 14 |
on the th we | 14 |
rest of the world | 14 |
writes to me that | 14 |
which had not been | 14 |
adults of both sexes | 14 |
part of the carina | 14 |
nothing could be more | 14 |
we shall immediately see | 14 |
in a less degree | 14 |
a member of the | 14 |
i can hardly believe | 14 |
with all my heart | 14 |
published in the life | 14 |
thank you most sincerely | 14 |
the hypothesis of pangenesis | 14 |
and this has been | 14 |
of two species of | 14 |
i must confess that | 14 |
in the northern hemisphere | 14 |
never occurred to me | 14 |
belong to the same | 14 |
to the same effect | 14 |
it was curious to | 14 |
to the nature of | 14 |
but this is a | 14 |
to have been formed | 14 |
to which it is | 14 |
both sides of the | 14 |
the length of time | 14 |
to the naked eye | 14 |
a case of reversion | 14 |
the laws of variation | 14 |
one of the higher | 14 |
can hardly be distinguished | 14 |
the small size of | 14 |
a letter of introduction | 14 |
from the second pair | 14 |
on the sexes of | 14 |
the study of natural | 14 |
pedicel of the sixth | 14 |
of the value of | 14 |
it is a curious | 14 |
on the structure and | 14 |
the pollen of a | 14 |
you cordially for your | 14 |
miles distant from the | 14 |
developed in the male | 14 |
i do not quite | 14 |
on the part of | 14 |
i cannot tell you | 14 |
a solution of the | 14 |
that it would have | 14 |
it is interesting to | 14 |
of sir charles lyell | 14 |
plumage by the male | 14 |
always seemed to me | 14 |
to a great extent | 14 |
thus he wrote to | 14 |
it will not be | 14 |
of the reproductive system | 14 |
up between the terga | 14 |
on one of these | 14 |
the motor impulse is | 14 |
am sorry to say | 14 |
but as soon as | 14 |
you say that you | 14 |
from the study of | 14 |
when we treat of | 14 |
season of the year | 14 |
in a few minutes | 14 |
the aid of the | 14 |
very glad that you | 14 |
to the principle of | 14 |
before the linnean society | 14 |
the principle of the | 14 |
the weight of the | 14 |
a strong tendency to | 14 |
the proceedings of the | 14 |
very good of you | 14 |
letters of charles darwin | 14 |
the three posterior cirri | 14 |
we were obliged to | 14 |
for an account of | 14 |
the question of the | 14 |
the basal articulation of | 14 |
which i have ever | 14 |
a few days after | 14 |
with here and there | 14 |
one to the other | 14 |
of anatomy and physiology | 14 |
you will see that | 14 |
lower surface of the | 14 |
formation of vegetable mould | 14 |
there is not a | 14 |
knocked on the head | 14 |
the natural history review | 14 |
am not sure that | 14 |
pointed out to me | 14 |
of the formation of | 14 |
that they were not | 14 |
the adults of both | 14 |
from the umbo to | 14 |
the flowers of the | 14 |
not know what to | 14 |
of this part of | 14 |
to the exterior tentacles | 14 |
the umbones of the | 14 |
the males of many | 14 |
should have thought that | 14 |
coast of south america | 14 |
with two or three | 14 |
i was assured that | 14 |
you will think me | 14 |
every one who has | 14 |
part of the valve | 14 |
in the long run | 14 |
at an early period | 14 |
on the two sides | 14 |
the waves of the | 14 |
was placed on a | 14 |
with respect to your | 14 |
that i had not | 14 |
the truth of this | 14 |
of the leaves in | 14 |
but he does not | 14 |
a very long time | 14 |
and nidification of the | 14 |
it may be said | 14 |
their conditions of life | 14 |
we know that the | 14 |
placed on the disc | 14 |
i am far from | 14 |
by some of the | 14 |
thank you heartily for | 14 |
the females of some | 14 |
to any one who | 14 |
the inside of the | 14 |
told me that the | 14 |
a drop of water | 14 |
come to an end | 14 |
is a curious fact | 14 |
i have been thinking | 14 |
difficult it is to | 14 |
through an angle of | 14 |
he was able to | 14 |
be found in the | 14 |
of the growth of | 14 |
that of any other | 14 |
in the state of | 14 |
i can think of | 14 |
a height of between | 14 |
it was owing to | 14 |
have been the case | 14 |
transmit a motor impulse | 14 |
it is an interesting | 14 |
have been acquired through | 14 |
to the state of | 14 |
at some future time | 14 |
the sexes differ in | 14 |
to be found in | 14 |
main divisions of the | 14 |
variation and natural selection | 14 |
the brain of the | 14 |
of the scuta and | 14 |
the action of worms | 14 |
of the female is | 14 |
the rest of his | 14 |
i am so glad | 14 |
that the motor impulse | 14 |
do not know that | 14 |
on the moulting of | 14 |
occurs in the origin | 14 |
segments of the posterior | 14 |
the males alone are | 14 |
is hardly possible to | 14 |
to the kindness of | 14 |
quarter of the world | 14 |
though i do not | 14 |
as is the case | 14 |
be very much obliged | 14 |
of my book on | 14 |
a curious account of | 14 |
a temperature of o | 14 |
well as of the | 14 |
also informs me that | 14 |
the theory of evolution | 14 |
can see no reason | 14 |
me to thank you | 14 |
that the males are | 14 |
in which you have | 14 |
man and the higher | 14 |
with the same result | 14 |
rami of the second | 14 |
the two sexes in | 14 |
is common to all | 14 |
in the same country | 14 |
on the sterility of | 14 |
i am bound to | 14 |
of the nervous system | 14 |
be looked at as | 14 |
in the brain of | 14 |
we have already seen | 14 |
it is enough to | 14 |
of the contents of | 13 |
letter is published in | 13 |
of a large number | 13 |
used to laugh at | 13 |
it has interested me | 13 |
in a few drops | 13 |
as far as known | 13 |
times as long as | 13 |
is said to have | 13 |
plains of la plata | 13 |
of a man who | 13 |
be shown to be | 13 |
and i have not | 13 |
as i can discover | 13 |
offspring of both sexes | 13 |
in the same year | 13 |
see this in the | 13 |
the neighbourhood of the | 13 |
what i have said | 13 |
in the tail of | 13 |
the same size as | 13 |
was not at all | 13 |
two sides of the | 13 |
you have done me | 13 |
that i could have | 13 |
that in the course | 13 |
to the absence of | 13 |
end of the year | 13 |
it should be observed | 13 |
is descended from some | 13 |
were placed on two | 13 |
to the royal society | 13 |
i look at it | 13 |
i did not at | 13 |
and i have no | 13 |
as large as the | 13 |
facts could be given | 13 |
the secretion from the | 13 |
a long line of | 13 |
however this may be | 13 |
from the same stock | 13 |
for i do not | 13 |
of the several species | 13 |
which i have called | 13 |
that it is impossible | 13 |
me a good deal | 13 |
is quite new to | 13 |
for i am sure | 13 |
am greatly indebted to | 13 |
a level with the | 13 |
towards the centre of | 13 |
of the animal kingdom | 13 |
in the morning the | 13 |
from a distinct plant | 13 |
that the difference between | 13 |
late period of life | 13 |
of the glands were | 13 |
well as in the | 13 |
there is a strong | 13 |
small size of the | 13 |
with what you say | 13 |
with the greatest interest | 13 |
do not see how | 13 |
i can say is | 13 |
as i have myself | 13 |
i have now read | 13 |
the progenitors of man | 13 |
by means of a | 13 |
from what you say | 13 |
by their own pollen | 13 |
one of which was | 13 |
from a long distance | 13 |
the progress of opinion | 13 |
to see in the | 13 |
nothing to do with | 13 |
greater or less degree | 13 |
it consists of a | 13 |
when we consider the | 13 |
segments of the pedicels | 13 |
between it and the | 13 |
was on the point | 13 |
likewise the case with | 13 |
from the coast of | 13 |
is a much more | 13 |
that i could not | 13 |
i ought to be | 13 |
the species in the | 13 |
that you do not | 13 |
margin of the scuta | 13 |
for half an hour | 13 |
analogous facts have been | 13 |
i will send you | 13 |
was shown in the | 13 |
action of natural selection | 13 |
to sir charles lyell | 13 |
of no use to | 13 |
i thought it was | 13 |
inclined to believe that | 13 |
as if it were | 13 |
from cell to cell | 13 |
fertilised by their own | 13 |
published in the autumn | 13 |
summary and concluding remarks | 13 |
throw light on the | 13 |
in several of the | 13 |
on a large scale | 13 |
in which i have | 13 |
may infer that the | 13 |
i have received your | 13 |
in the pall mall | 13 |
geological observations on south | 13 |
came to the conclusion | 13 |
and as i have | 13 |
that they do not | 13 |
i have not heard | 13 |
i will here give | 13 |
a few years since | 13 |
the study of the | 13 |
of the head and | 13 |
on this head in | 13 |
what i have seen | 13 |
i have had some | 13 |
the productions of the | 13 |
of plumage by the | 13 |
it is not possible | 13 |
leaves were then placed | 13 |
fertilised by the pollen | 13 |
i know that you | 13 |
by the middle of | 13 |
the power of absorption | 13 |
in which both sexes | 13 |
it may be well | 13 |
was much interested by | 13 |
that the inhabitants of | 13 |
of the same community | 13 |
and it has been | 13 |
on the difference in | 13 |
of the argus pheasant | 13 |
the tentacles of drosera | 13 |
we look to the | 13 |
a year or two | 13 |
at the beginning of | 13 |
is placed on the | 13 |
articulation of the first | 13 |
but as far as | 13 |
in search of food | 13 |
the margin of a | 13 |
from all parts of | 13 |
on the horns of | 13 |
drops were placed on | 13 |
appears to be the | 13 |
entire length of the | 13 |
males of some species | 13 |
may be due to | 13 |
by the selection of | 13 |
me that it is | 13 |
is covered by a | 13 |
at some former period | 13 |
and most of them | 13 |
may feel sure that | 13 |
i found that the | 13 |
of the same leaf | 13 |
and the inferior angle | 13 |
well known that the | 13 |
only the of a | 13 |
in the species of | 13 |
in the essay of | 13 |
you most sincerely for | 13 |
related to each other | 13 |
the cases in which | 13 |
features of the country | 13 |
thought that you would | 13 |
be thrown on the | 13 |
backs of the leaves | 13 |
some account of the | 13 |
and it is not | 13 |
i have often seen | 13 |
did not reach the | 13 |
i find that the | 13 |
the conclusion that the | 13 |
the foot of a | 13 |
would be impossible to | 13 |
that in the case | 13 |
how difficult it is | 13 |
about one hundred and | 13 |
were placed on a | 13 |
at the geological society | 13 |
inheritance at corresponding periods | 13 |
good of you to | 13 |
few drops of a | 13 |
proportional numbers of the | 13 |
i have often heard | 13 |
i am much indebted | 13 |
the college of surgeons | 13 |
you seem to have | 13 |
the case in the | 13 |
i must tell you | 13 |
breeds of the pigeon | 13 |
from the adductor muscle | 13 |
the salts of ammonia | 13 |
in consequence of this | 13 |
in the zoology of | 13 |
charles darwin to f | 13 |
was very good of | 13 |
as far as you | 13 |
must thank you for | 13 |
obliged for your kind | 13 |
you sincerely for your | 13 |
the steps by which | 13 |
may be accounted for | 13 |
the season of love | 13 |
the leaves were then | 13 |
of variation under domestication | 13 |
at an elevation of | 13 |
led to believe that | 13 |
the eyes of the | 13 |
development of the brain | 13 |
is not improbable that | 13 |
definite action of the | 13 |
is clear that the | 13 |
hear what you think | 13 |
in the same direction | 13 |
the period of the | 13 |
were placed in a | 13 |
in the power of | 13 |
but i am very | 13 |
and i think i | 13 |
appears to me to | 13 |
is new to me | 13 |
the islands of the | 13 |
the carbonate of ammonia | 13 |
you are going to | 13 |
a tendency to vary | 13 |
the colouring of the | 13 |
am extremely glad to | 13 |
in comparison with those | 13 |
it is not improbable | 13 |
a list of the | 13 |
at an earlier age | 13 |
that he has seen | 13 |
note in the original | 13 |
of the causes of | 13 |
the umbo to the | 13 |
change of plumage in | 13 |
have been acquired by | 13 |
much like to know | 13 |
fibrous basis of bone | 13 |
the tail of a | 13 |
changed habits of life | 13 |
one and a half | 13 |
to which they belong | 13 |
you a copy of | 13 |
on which i have | 13 |
deserve to be called | 13 |
it strikes me as | 13 |
on sexual differences in | 13 |
that it must have | 13 |
and i have seen | 13 |
there is a slight | 13 |
the power of the | 13 |
i have little doubt | 13 |
of inheritance at corresponding | 13 |
have good reason to | 13 |
never been able to | 13 |
of the females of | 13 |
that the females of | 13 |
a second edition of | 13 |
angles to each other | 13 |
before the british association | 13 |
very curious to hear | 13 |
the right and left | 13 |
the east indian archipelago | 13 |
kind as to send | 13 |
at an angle of | 13 |
but i doubt whether | 13 |
the attacks of the | 13 |
i did not understand | 13 |
that you approve of | 13 |
not far from the | 13 |
of the natives of | 13 |
in a greater degree | 13 |
the later editions of | 13 |
i am in the | 13 |
same manner as in | 13 |
pedicels of the cirri | 13 |
in a manner which | 13 |
the greatest number of | 13 |
at a great height | 13 |
my return to england | 13 |
the journal of the | 13 |
to the attacks of | 13 |
on the structure of | 13 |
no effect was produced | 13 |
i suppose that i | 13 |
to the cause of | 13 |
in the university of | 13 |
the plumage of the | 13 |
the tendency to reversion | 13 |
different races of men | 13 |
immersed in minims of | 13 |
beneath the basal articulation | 13 |
of the cape de | 13 |
not seem to have | 13 |
to the law of | 13 |
basal articulation of the | 13 |
the article in the | 13 |
of the least use | 13 |
we should bear in | 12 |
of the moral sense | 12 |
action of the surrounding | 12 |
in many of the | 12 |
i set out on | 12 |
seems to me rather | 12 |
have the kindness to | 12 |
quarter of a mile | 12 |
the legs of the | 12 |
i was enabled to | 12 |
more thickly clothed with | 12 |
that this was the | 12 |
it must be a | 12 |
of this letter is | 12 |
remarks on this subject | 12 |
to my mind the | 12 |
be very glad of | 12 |
there is also a | 12 |
one point of view | 12 |