All echoes have some one place to which they are returned stronger and

more distinct than to any other; and that is always the place that lies

at right angles with the object of repercussion, and is not too near,

nor too far off. Buildings, or naked rocks, re-echo much more

articulately than hanging wood or vales; because in the latter the

voice is as it were entangled, and embarrassed in the covert, and

weakened in the rebound.

The true object of this echo, as we found by various experiments, is

the stone-built, tiled hop-kiln in Galleylane, which measures in front

40 feet, and from the ground to the eaves 12 feet. The true centrum

phonicum, or just distance, is one particular spot in the King’s-field,

in the path to Nore-hill, on the very brink of the steep balk above the

hollow cart way. In this case there is no choice of distance; but the

path, by mere contingency, happens to be the lucky, the identical spot,

because the ground rises or falls so immediately, if the speaker either

retires or advances, that his mouth would at once be above or below the

object.

We measured this polysyllabical echo with great exactness, and found

the distance to fall very short of Dr. Plot’s rule for distinct

articulation: for the Doctor, in his history of Oxfordshire, allows 120

feet for the return of each syllable distinctly: hence this echo, which

gives ten distinct syllables, ought to measure 400 yards, or 120 feet

to each syllable; whereas our distance is only 258 yards, or near 75

feet, to each syllable. Thus our measure falls short of the Doctor’s,

as five to eight: but then it must be acknowledged that this candid

philosopher was convinced afterwards, that some latitude must be

admitted of in the distance of echoes according to time and place.

When experiments of this sort are making, it should always be

remembered that weather and the time of day have a vast influence on an

echo; for a dull, heavy, moist air deadens and clogs the sound; and hot

sunshine renders the air thin and weak, and deprives it of all its

springiness; and a ruffling wind quite defeats the whole. In a still,

clear, dewy evening the air is most elastic; and perhaps the later the

hour the more so.

Echo has always been so amusing to the imagination, that the poets have

personified her; and in their hands she has been the occasion of many a

beautiful fiction. Nor need the gravest man be ashamed to appear taken

with such a phenomenon, since it may become the subject of

philosophical or mathematical inquiries.

One should have imagined that echoes, if not entertaining, must at

least have been harmless and inoffensive; yet Virgil advances a strange

notion, that they are injurious to bees. After enumerating some

probable and reasonable annoyances, such as prudent owners would wish

far removed from their bee-gardens, he adds

… aut ubi concava pulsu

Saxa sonant, vocisque offensa resultat image.

This wild and fanciful assertion will hardly be admitted by the

philosophers of these days; especially as they all now seem agreed that

insects are not furnished with any organs of hearing at all. But if it

should be urged, that though they cannot hear yet perhaps they may feel

the repercussion of sounds, I grant it is possible they may. Yet that

these impressions are distasteful or hurtful, I deny, because bees, in

good summers, thrive well in my outlet, where the echoes are very

strong: for this village is another Anathoth, a place of responses or

echoes. Besides, it does not appear from experiment that bees are in

any way capable of being affected by sounds: for I have often tried my

own with a large speaking-trumpet held close to their hives, and with

such an exertion of voice as would have hailed a ship at the distance

of a mile, and still these insects pursued their various employments

undisturbed, and without showing the least sensibility or resentment.

Some time since its discovery this echo is become totally silent,

though the object, or hop-kiln remains: nor is there any mystery in

this defect, for the field between is planted as an hop-garden, and the

voice of the speaker is totally absorbed and lost among the poles and

entangled foliage of the hops. And when the poles are removed in autumn

the disappointment is the same; because a tall quick-set hedge,

nurtured up for the purpose of shelter to the hop ground, entirely

interrupts the impulse and repercussion of the voice: so that till

those obstructions are removed no more of its garrulity can be

expected.

Should any gentleman of fortune think an echo in his park or outlet a

pleasing incident, he might build one at little or no expense. For

whenever he had occasion for a new barn, stable, dog-kennel, or the

like structure, it would be only needful to erect this building on the

gentle declivity of an hill, with a like rising opposite to it, at a

few hundred yards distance; and perhaps success might be the easier

ensured could some canal, lake, or stream, intervene. From a seat at

the centrum phonicum he and his friends might amuse themselves

sometimes of an evening with the prattle of this loquacious nymph; of

whose complacency and decent reserve more may be said than can with

truth of every individual of her sex; since she is

… quæ nec reticere loquenti,

Nec prior ipsa loqui didicit resonabilis echo.

I am, etc.

P.S. — The classic reader will, I trust, pardon the following lovely

quotation, so finely describing echoes, and so poetically accounting

for their causes from popular superstition:

Quæ bene quom videas, rationem reddere possis

Tute tibi atque alus, quo pacto per loca sola

Saxa pareis formas verborum ex ordine reddant,

Palanteis comites quom monteis inter opacos

Quaerimus, et magna dispersos voce ciemus.

Sex etiam, aut septem loca vidi reddere voces

Unam quom jaceres: ita colles collibus ipsis

Verba repulsantes iterabant dicta referre.

Haec loca capripedes Satyros, Nymphasque tenere

Finitimi fingunt, et Faunos esse loquuntur;

Quorum noctivago strepitu, ludoque jocanti

Adfirmant volgo taciturna silentia rumpi,

Chordarumque sonos fieri, dulceisque querelas,

Tibia quas fundit digitis pulsata canentum:

Et genus agricolum late sentiscere, quom Pan

Pinea semiferi capitis velamina quassans,

Unco saepe labro calamos percurrit hianteis,

Fistula silvestrem ne cesset fundere musam.

Lucretius, lib. iv. 1. 576.

Letter XXXIX

To The Honourable Daines Barrington

Selborne, May 13, 1778.

Dear Sir,

Among the many singularities attending those amusing birds the swifts,

I am now confirmed in the opinion that we have every year the same

number of pairs invariably; at least the result of my inquiry has been

exactly the same for a long time past. The swallows and martins are so

numerous, and so widely distributed over the village, that it is hardly

possible to recount them; while the swifts, though they do not all

build in the church, yet so frequently haunt it, and play and

rendezvous round it, that they are easily enumerated. The number that I

constantly find are eight pairs; about half of which reside in the

church, and the rest build in some of the lowest and meanest thatched

cottages. Now as these eight pairs, allowance being made for accidents,

breed yearly eight pairs more, what becomes annually of this increase;

and what determines every spring which pairs shall visit us, and

reoccupy their ancient haunts ?

Ever since I have attended to the subject of ornithology, I have always

supposed that that sudden reverse of affection, that strange

ἀντιστοργὴ, which immediately succeeds in the feathered kind to the

most passionate fondness, is the occasion of an equal dispersion of

birds over the face of the earth. Without this provision one favourite

district would be crowded with inhabitants, while others would be

destitute and forsaken. But the parent birds seem to maintain a jealous

superiority, and to oblige the young to seek for new abodes: and the

rivalry of the males, in many kinds, prevents their crowding the one on

the other. Whether the swallows and house-martins return in the same

exact number annually is not easy to say, for reasons given above: but

it is apparent, as I have remarked before in my Monographies, that the

numbers returning bear no manner of proportion to the numbers retiring.

Letter XL

To The Honourable Daines Barrington

Selborne, June 2, 1778.

Dear Sir,

The standing objection to botany has always been, that it is a pursuit

that amuses the fancy and exercises the memory, without improving the

mind or advancing any real knowledge: and where the science is carried

no farther than a mere systematic classification, the charge is but too

true. But the botanist that is desirous of wiping off this aspersion

should be by no means content with a list of names; he should study

plants philosophically, should investigate the laws of vegetation,

should examine the powers and virtues of efficacious herbs, should

promote their cultivation; and graft the gardener, the planter, and the

husbandman, on the phytologist. Not that system is by any means to be

thrown aside; without system the field of nature would be a pathless

wilderness: but system should be subservient to, not the main object

of, pursuit.

Vegetation is highly worthy of our attention; and in itself is of the

utmost consequence to mankind, and productive of many of the greatest

comforts and elegancies of life. To plants we owe timber, bread, beer,

honey, wine, oil, linen, cotton, etc., what not only strengthens our

hearts, and exhilarates our spirits, but what secures from inclemencies

of weather and adorns our persons. Man, in his true state of nature,

seems to be subsisted by spontaneous vegetation: in middle climes,

where grasses prevail, he mixes some animal food with the produce of

the field and garden: and it is towards the polar extremes only that,

like his kindred bears and wolves, he gorges himself with flesh alone,

and is driven, to what hunger has never been known to compel the very

beasts, to prey on his own species.*

* See the late Voyages to the South-seas.

The productions of vegetation have had a vast influence on the commerce

of nations, and have been the great promoters of navigation, as may be

seen in the articles of sugar, tea, tobacco, opium, ginseng, betel,

paper, etc. As every climate has its peculiar produce, our natural

wants bring on a mutual intercourse; so that by means of trade each

distant part is supplied with the growth of every latitude. But,

without the knowledge of plants and their culture, we must have been

content with our hips and haws, without enjoying the delicate fruits of

India and the salutiferous drugs of Peru.

Instead of examining the minute distinctions of every various species

of each obscure genus, the botanist should endeavour to make himself

acquainted with those that are useful. You shall see a man readily

ascertain every herb of the field, yet hardly know wheat from barley,

or at least one sort of wheat or barley from another.

But of all sorts of vegetation the grasses seem to be most neglected;

neither the farmer nor the grazier seem to distinguish the annual from

the perennial, the hardy from the tender, nor the succulent and

nutritive from the dry and juiceless.

The study of grasses would be of great consequence to a northerly and

grazing kingdom. The botanist that could improve the sward of the

district where he lived would be an useful member of society; to raise

a thick turf on a naked soil would be worth volumes of systematic

knowledge; and he would be the best commonwealth’s man that could

occasion the growth of ‘two blades of grass where one alone was seen

before.’

I am, etc.

Letter XLI

To The Honourable Daines Barrington

Selborne, July 3, 1778.

Dear Sir,

In a district so diversified with such a variety of hill and dale,

aspects, and soils, it is no wonder that great choice of plants should

be found. Chalks, clays, sands, sheep-walks and downs, bogs, heaths,

woodlands, and champaign fields, cannot but furnish an ample flora. The

deep rocky lanes abound with filices, and the pastures and moist woods

with fungi. If in any branch of botany we may seem to be wanting, it

must be in the large aquatic plants, which are not to be expected on a

spot far removed from rivers, and lying up amidst the hill country at

the spring heads. To enumerate all the plants that have been discovered

within our limits would be a needless work; but a short list of the

more rare, and the spots where they are to be found, may be neither

unacceptable nor unentertaining:

Helleborus foetidus, stinking hellebore, bear’s foot, or setterworth, —

all over the High-wood and Coney-croft-hanger: this continues a great

branching plant the winter through, blossoming about January, and is

very ornamental in shady walks and shrubberies. The good women give the

leaves powdered to children troubled with worms; but it is a violent

remedy, and ought to be administered with caution.

Helleborus viridis, green hellebore, — in the deep stony lane on the

left hand just before the turning to Norton-farm, and at the top of

Middle Dorton under the hedge: this plant dies down to the ground early

in autumn, and springs again about February, flowering almost as soon

as it appears above ground.

Vaccinium oxycoccos, creeping bilberries or cranberries, — in the bogs

of Bin’s-pond.

Vaccinium myrtillus, whortle, or bleaberries, — on the dry hillocks of

Wolmer-forest.

Drosera rotundifolia, round-leaved sun-dew. Drosera longifolia,

long-leaved ditto. In the bogs of Bin’s-pond.

Comarum palustre, purple comarum, or marsh cinquefoil, — in the bogs of

Bin’s-pond.

Hypericon androsaemum, tutsan, St. John’s wort, — in the stony, hollow

lanes.

Vinca minor, less periwinkle, — in Selborne Hanger and Shrubwood.

Monotropa hypopithys, yellow monotropa, or bird’s nest, — in Selborne

Hanger under the shady beeches, to whose roots it seems to be

parasitical — at the north-west end of the Hanger.

Chlora perfoliata, Blackstonia perfoliata, Hudsoni, perfoliated

yellow-won, — on the banks in the King’s-field.

Paris quadrifolia, herb Paris, true-love, or one-berry, — in the Church

Litten coppice.

Chrysosplenium oppositifolium, opposite golden saxifrage, — in the dark

and rocky hollow lanes.

Gentiana amarella, autumnal gentian or fellwort, — on the Zig-zag and

Hanger;

Lathraea squamaria, tooth-wort, — in the Church Litten coppice under

some hazels near the foot-bridge, in Trimming’s garden-hedge, and on

the dry wall opposite Grange-yard.

Dipsacus pilosus, small teasel, — in the Short and Long Lith.

Lathyrus sylvestris, narrow-leaved, or wild lathyrus, — in the bushes

at the foot of the Short Lith, near the path.

Ophrys spiralis, ladies’ traces, — in the Long Lith, and towards the

south-corner of the common.

Ophrys nidus avis, birds’ nest ophrys, — in the Long Lith under the

shady beeches among the dead leaves; in Great Dorton among the bushes,

and on the Hanger plentifully.

Serapias latifolia, helleborine, — in the High-wood under the shady

beeches.

Daphne laureola, spurge laurel, — in Selborne Hanger and the High-wood.

Daphne mezereum, the mezereon, — in Selborne Hanger among the shrubs at

the south-east end above the cottages.

Lycoperdon tuber, truffles, — in the Hanger and High-wood.

Sambucus ebulus, dwarf elder, walwort, or danewort, — among the rubbish

and ruined foundations of the Priory.

Of all the propensities of plants none seem more strange than their

different periods of blossoming. Some produce their flowers in the

winter, or very first dawnings of spring; many when the spring is

established; some at midsummer, and some not till autumn. When we see

the helleborus foetidus and helleborus niger blowing at Christmas, the

helleborus hyemalis in January, and the helleborus viridis as soon as

ever it emerges out of the ground, we do not wonder, because they are

kindred plants that we expect should keep pace the one with the other.

But other congenerous vegetables differ so widely in their time of

flowering that we cannot but admire. I shall only instance at present

in the crocus sativus, the vernal, and the autumnal crocus, which have

such an affinity, that the best botanists only make them varieties of

the same genus, of which there is only one species; not being able to

discern any difference in the corolla, or in the internal structure.

Yet the vernal crocus expands its flowers by the beginning of March at

farthest, and often in very rigorous weather; and cannot be retarded

but by some violence offered: — while the autumnal (the saffron) defies

the influence of the spring and summer, and will not blow till most

plants begin to fade and run to seed. This circumstance is one of the

wonders of the creation, little noticed, because a common occurrence:

yet ought not to be overlooked on account of its being familiar, since

it would be as difficult to be explained as the most stupendous

phaenomenon in nature.

Say, what impels, amidst surrounding snow,

Congealed, the crocus’ flamy bud to grow?

Say, what retards, amidst the summer’s blaze,

Th’ autumnal bulb till pale, declining days ?

The GOD of SEASONS; whose pervading power

Controls the sun, or sheds the fleecy shower:

He bids each flower His quickening word obey;

Or to each lingering bloom enjoins delay.

Letter XLII

To The Honourable Daines Barrington

Omnibus animalibus reliquis certus et uniusmodi, et in suo cuique

genere incessus est: aves solae vario meatu feruntur, et in terra, et

in äere.—PLIN. Hist. Nat. lib. x. cap. 38.

Selborne, Aug. 7, 1778.

Dear Sir,

A good ornithologist should be able to distinguish birds by their air

as well as by their colours and shape; on the ground as well as on the

wing, and in the bush as well as in the hand. For, though it must not

be said that every species of birds has a manner peculiar to itself,

yet there is somewhat in most genera at least, that at first sight

discriminates them, and enables a judicious observer to pronounce upon

them with some certainty. Put a bird in moron

… Et verâ incessu patuit….

Thus kites and buzzards sail round in circles with wings expanded and

motionless; and it is from their gliding manner that the former are

still called in the north of England gleads, from the Saxon verb glidan

to glide. The kestrel, or wind-hover, has a peculiar mode of hanging in

the air in one place, his wings all the while being briskly agitated.

Hen-harriers fly low over heaths or fields of corn, and beat the ground

regularly like a pointer or setting-dog. Owls move in a buoyant manner,

as if lighter than the air; they seem to want ballast. There is a

peculiarity belonging to ravens that must draw the attention even of

the most incurious — they spend all their leisure time in striking and

cuffing each other on the wing in a kind of playful skirmish; and, when

they move from one place to another, frequently turn on their backs

with a loud croak, and seem to be falling to the ground. When this odd

gesture betides them, they are scratching themselves with one foot, and

thus lose the centre of gravity. Rooks sometimes dive and tumble in a

frolicsome manner; crows and daws swagger in their walk; wood-peckers

fly volatu undoso, opening and closing their wings at every stroke, and

so are always rising or falling in curves. All of this genus use their

tails, which incline downward, as a support while they run up trees.

Parrots, like all other hook-clawed birds, walk awkwardly, and make use

of their bill as a third foot, climbing and ascending with ridiculous

caution. All the gallinae parade and walk gracefully, and run nimbly;

but fly with difficulty, with an impetuous whirring, and in a straight

line. Magpies and jays flutter with powerless wings, and make no

dispatch; herons seem incumbered with too much sail for their light

bodies; but these vast hollow wings are necessary in carrying burdens,

such as large fishes, and the like; pigeons, and particularly the sort

called smiters, have a way of clashing their wings the one against the

other over their backs with a loud snap; another variety called

tumblers turn themselves over in the air. Some birds have movements

peculiar to the season of love: thus ring-doves, though strong and

rapid at other times, yet in the spring hang about on the wing in a

toying and playful manner; thus the cock-snipe, while breeding,

forgetting his former flight, fans the air like the wind-hover; and the

green-finch in particular exhibits such languishing and faltering

gestures as to appear like a wounded and dying bird; the king-fisher

darts along like an arrow; fern-owls, or goat-suckers, glance in the

dusk over the tops of trees like a meteor; starlings as it were swim

along, while missal-thrushes use a wild and desultory flight; swallows

sweep over the surface of the ground and water, and distinguish

themselves by rapid turns and quick evolutions; swifts dash round in

circles; and the bank-martin moves with frequent vacillations like a

butterfly. Most of the small birds fly by jerks, rising and falling as

they advance. Most small birds hop; but wagtails and larks walk, moving

their legs alternately. Skylarks rise and fall perpendicularly as they

sing: woodlarks hang poised in the air; and titlarks rise and fall in

large cubes, singing in their descent. The white-throat uses odd jerks

and gesticulations over the tops of hedges and bushes. All the

duck-kind waddle; divers and auks walk as if fettered, and stand erect

on their tails: these are the compedes of Linnaeus. Geese and cranes,

and most wild-fowls, move in figured flights, often changing their

position. The secondary rerniges of tringae, wild-ducks, and some

others, are very long, and give their wings, when in motion, an hooked

appearance. Dab-chicks, moor-hens, and coots, fly erect, with their

legs hanging down, and hardly make any dispatch; the reason is plain,

their wings are placed too forward out of the true centre of gravity;

as the legs of auks and divers are situated too backward.

Letter XLIII

To The Honourable Daines Barrington

Selborne, Sept. 9, 1778.

Dear Sir,

From the motion of birds, the transition is natural enough to their

notes and language, of which I shall say something. Not that I would

pretend to understand their language like the vizier of the

_Spectator_, who, by the recital of a conversation which passed between

two owls, reclaimed a sultan,* before delighting in conquest and

devastation; but I would be thought only to mean that many of the

winged tribes have various sounds and voices adapted to express their

various passions, wants, and feelings; such as anger, fear, love,

hatred, hunger, and the like. All species are not equally eloquent;

some are copious and fluent as it were in their utterance, while others

are confined to a few important sounds: no bird, like the fish kind, is

quite mute, though some are rather silent. The language of birds is

very ancient, and, like other ancient modes of speech, very elliptical:

little is said, but much is meant and understood.

* See Spectator, Vol. VII., No. 512.

The Natural History of Selborne · 第 15 / 19 段