They will remain for many years unchanged in the
ground, protected by the coolness and deep shade of the forest above
them.
ground, protected by the coolness and deep shade of the forest above
them.
Thoreau - Excursions and Poems
I can confirm
what William Bartram wrote to Wilson, the ornithologist, that "the jay
is one of the most useful agents in the economy of nature, for
disseminating forest trees and other nuciferous and hard-seeded
vegetables on which they feed. Their chief employment during the
autumnal season is foraging to supply their winter stores. In
performing this necessary duty they drop abundance of seed in their
flight over fields, hedges, and by fences, where they alight to
deposit them in the post-holes, etc. It is remarkable what numbers of
young trees rise up in fields and pastures after a wet winter and
spring. These birds alone are capable, in a few years' time, to
replant all the cleared lands. "
I have noticed that squirrels also frequently drop their nuts in open
land, which will still further account for the oaks and walnuts which
spring up in pastures, for, depend on it, every new tree comes from a
seed. When I examine the little oaks, one or two years old, in such
places, I invariably find the empty acorn from which they sprung.
So far from the seed having lain dormant in the soil since oaks grew
there before, as many believe, it is well known that it is difficult
to preserve the vitality of acorns long enough to transport them to
Europe; and it is recommended in Loudon's "Arboretum," as the safest
course, to sprout them in pots on the voyage. The same authority
states that "very few acorns of any species will germinate after
having been kept a year," that beech mast "only retains its vital
properties one year," and the black walnut "seldom more than six
months after it has ripened. " I have frequently found that in November
almost every acorn left on the ground had sprouted or decayed. What
with frost, drouth, moisture, and worms, the greater part are soon
destroyed. Yet it is stated by one botanical writer that "acorns that
have lain for centuries, on being ploughed up, have soon vegetated. "
Mr. George B. Emerson, in his valuable Report on the Trees and Shrubs
of this State, says of the pines: "The tenacity of life of the seeds
is remarkable.
They will remain for many years unchanged in the
ground, protected by the coolness and deep shade of the forest above
them. But when the forest is removed, and the warmth of the sun
admitted, they immediately vegetate. " Since he does not tell us on
what observation his remark is founded, I must doubt its truth.
Besides, the experience of nursery-men makes it the more questionable.
The stories of wheat raised from seed buried with an ancient Egyptian,
and of raspberries raised from seed found in the stomach of a man in
England, who is supposed to have died sixteen or seventeen hundred
years ago, are generally discredited, simply because the evidence is
not conclusive.
Several men of science, Dr. Carpenter among them, have used the
statement that beach plums sprang up in sand which was dug up forty
miles inland in Maine, to prove that the seed had lain there a very
long time, and some have inferred that the coast has receded so far.
But it seems to me necessary to their argument to show, first, that
beach plums grow only on a beach. They are not uncommon here, which is
about half that distance from the shore; and I remember a dense patch
a few miles north of us, twenty-five miles inland, from which the
fruit was annually carried to market. How much further inland they
grow, I know not. Dr. Charles T. Jackson speaks of finding "beach
plums" (perhaps they were this kind) more than one hundred miles
inland in Maine.
It chances that similar objections lie against all the more notorious
instances of the kind on record.
Yet I am prepared to believe that some seeds, especially small ones,
may retain their vitality for centuries under favorable circumstances.
In the spring of 1859, the old Hunt house, so called, in this town,
whose chimney bore the date 1703, was taken down.
what William Bartram wrote to Wilson, the ornithologist, that "the jay
is one of the most useful agents in the economy of nature, for
disseminating forest trees and other nuciferous and hard-seeded
vegetables on which they feed. Their chief employment during the
autumnal season is foraging to supply their winter stores. In
performing this necessary duty they drop abundance of seed in their
flight over fields, hedges, and by fences, where they alight to
deposit them in the post-holes, etc. It is remarkable what numbers of
young trees rise up in fields and pastures after a wet winter and
spring. These birds alone are capable, in a few years' time, to
replant all the cleared lands. "
I have noticed that squirrels also frequently drop their nuts in open
land, which will still further account for the oaks and walnuts which
spring up in pastures, for, depend on it, every new tree comes from a
seed. When I examine the little oaks, one or two years old, in such
places, I invariably find the empty acorn from which they sprung.
So far from the seed having lain dormant in the soil since oaks grew
there before, as many believe, it is well known that it is difficult
to preserve the vitality of acorns long enough to transport them to
Europe; and it is recommended in Loudon's "Arboretum," as the safest
course, to sprout them in pots on the voyage. The same authority
states that "very few acorns of any species will germinate after
having been kept a year," that beech mast "only retains its vital
properties one year," and the black walnut "seldom more than six
months after it has ripened. " I have frequently found that in November
almost every acorn left on the ground had sprouted or decayed. What
with frost, drouth, moisture, and worms, the greater part are soon
destroyed. Yet it is stated by one botanical writer that "acorns that
have lain for centuries, on being ploughed up, have soon vegetated. "
Mr. George B. Emerson, in his valuable Report on the Trees and Shrubs
of this State, says of the pines: "The tenacity of life of the seeds
is remarkable.
They will remain for many years unchanged in the
ground, protected by the coolness and deep shade of the forest above
them. But when the forest is removed, and the warmth of the sun
admitted, they immediately vegetate. " Since he does not tell us on
what observation his remark is founded, I must doubt its truth.
Besides, the experience of nursery-men makes it the more questionable.
The stories of wheat raised from seed buried with an ancient Egyptian,
and of raspberries raised from seed found in the stomach of a man in
England, who is supposed to have died sixteen or seventeen hundred
years ago, are generally discredited, simply because the evidence is
not conclusive.
Several men of science, Dr. Carpenter among them, have used the
statement that beach plums sprang up in sand which was dug up forty
miles inland in Maine, to prove that the seed had lain there a very
long time, and some have inferred that the coast has receded so far.
But it seems to me necessary to their argument to show, first, that
beach plums grow only on a beach. They are not uncommon here, which is
about half that distance from the shore; and I remember a dense patch
a few miles north of us, twenty-five miles inland, from which the
fruit was annually carried to market. How much further inland they
grow, I know not. Dr. Charles T. Jackson speaks of finding "beach
plums" (perhaps they were this kind) more than one hundred miles
inland in Maine.
It chances that similar objections lie against all the more notorious
instances of the kind on record.
Yet I am prepared to believe that some seeds, especially small ones,
may retain their vitality for centuries under favorable circumstances.
In the spring of 1859, the old Hunt house, so called, in this town,
whose chimney bore the date 1703, was taken down.
