BIVOUAC.

There are four ways in which travellers who are thrown upon their own

resources may house themselves. They may bivouac, that is to say, they

may erect a temporary shelter of a makeshift character, partly from

materials found on the spot, and partly from the cloths they may happen

to possess; they may build a substantial hut, which of course takes a

good deal of labour to complete; they may use sleeping-bags; or they may

pitch a regular tent. I will speak of these four methods of encamping,

--the bivouac, the hut, the sleeping-bag, and the tent, in that order.

General Remarks.--Bivouacking is miserable work in a wet or unhealthy

climate; but in a dry and healthy one, there is no question of its

superiority over tenting. Men who sleep habitually in the open, breathe

fresher air and are far more imbued with the spirit of wild life, than

those who pass the night within the stuffy enclosure of a tent. It is an

endless pleasure to lie half awake watching the stars above, and the

picturesque groupings of the encampment round about, and to hear on all

sides the stirrings of animal life. And later in the night, when the fire

is low, and servants and cattle are asleep, and there is no sound but of

the wind and an occasional plaintive cry of wild animals, the traveller

finds himself in that close communion with nature which is the true charm

of wild travel. Now all this pleasure is lost by sleeping in a tent. Tent

life is semi-civilization, and perpetuates its habits. This may be

illustrated by a simple trait; a man who has lived much in bivouacs, if

there be a night alarm, runs naturally into the dark for safety, just as

a wild animal would; but a man who travels with tents becomes frightened

when away from its lights, or from the fancied security of its walls.

In a dangerous country there can be no comparison between the hazard of a

tent and that of a bivouac. In the former a man's sleep is heavy; he

cannot hear nearly so well; he can see nothing; his cattle may all

decamp; while marauders know exactly where he is lying, and may make

their plans accordingly. They may creep up unobserved and spear him

through the canvas. The first Napoleon had a great opinion of the

advantages of bivouacking over those of tenting. He said it was the

healthier of the two for soldiers. (See p. 153.)

Shelter from the Wind.--Study the form of a hare! In the flattest and

most unpromising of fields, the creature will have availed herself of

some little hollow to the lee of an insignificant tuft of grass, and

there she will have nestled and fidgeted about till she has made a

smooth, round, grassy bed, compact and fitted to her shape, where she may

curl herself snugly up, and cower down below the level of the cutting

night wind. Follow her example. A man, as he lies upon his mother earth,

is an object so small and low that a screen of eighteen inches high will

guard him securely from the strength of a storm. A common mistake of a

novice lies in selecting a tree for his camping-place, which spreads out

nobly above, but affords no other shelter from the wind than that of its

bare stem below.

[Sketch of sleeping man behind wall].

It may be, that as he walks about in search of shelter, a mass of foliage

at the level of his eye, with its broad shadow, attracts him, and as he

stands to the leeward of it it seems snug, and, therefore, without

further reflection, he orders his bed to be spread at the foot of some

tree. But as soon as he lies down on the ground the tree proves worthless

as a screen against the wind; it is a roof, but it is not a wall. The

real want in blowy weather is a dense low screen, perfectly wind-tight,

as high as the knee above the ground. Thus, if a traveller has to encamp

on a bare turf plain, he need only turn up a sod seven feet long by two

feet wide, and if he succeeds in propping it on its edge, it will form a

sufficient shield against the wind.

In heavy gales, the neighbourhood of a solitary tree is a positive

nuisance. It creates a violent eddy of wind, that leaves palpable

evidence of its existence. Thus, in corn-fields, it is a common result of

a storm to batter the corn quite flat in circles round each tree that

stands in the field, while elsewhere no injury takes place. This very

morning that I am writing these remarks, November 158, I was

forcibly struck by the appearance of Kensington Gardens, after last

night's gale, which had covered the ground with an extraordinary amount

of dead leaves. They lay in a remarkably uniform layer, of from three to

five inches in depth, except that round each and every tree the ground

was absolutely bare of leaves for a radius of about a yard. The effect

was as though circular discs had been cut out, leaving the edges of the

layer of leaves perfectly sharp and vertical. It would have been a

dangerous mistake to have slept that night at the foot of any one of

those trees.

Again, in selecting a place for bivouac, we must bear in mind that a gale

never blows in level currents, but in all kinds of curls and eddies, as

the driving of a dust-storm, or the vagaries of bits of straw caught up

by the wind, unmistakably show us. Little hillocks or undulations,

combined with the general lay of the ground, are a chief cause of these

eddies; they entirely divert the current of the wind from particular

spots. Such spots should be looked for; they are discovered by watching

the grass or the sand that lies on the ground. If the surface be quiet in

one place, while all around it is agitated by the wind, we shall not be

far wrong in selecting that place for our bed, however unprotected it may

seem in other respects. It is constantly remarked, that a very slight

mound or ridge will shelter the ground for many feet behind it; and an

old campaigner will accept such shelter gladly, notwithstanding the

apparent insignificances of its cause.

Shelter from the Sky.--The shelter of a wall is only sufficient against

wind or driving rain; we require a roof to shield us against vertical

rain, and against dew, or what is much the same thing, against the cold

of a clear blue sky on a still night. The temperature of the heavens is

known pretty accurately, by more than one method of calculation: it is

-239 degrees Fahr.; the greatest cold felt in the Arctic regions being

about -40 degrees Fahr. If the night be cloudy, each cloud is a roof to

keep off the cold; if it be clear, we are exposed to the full chill of

the blue sky, with only such alleviation as the warming and the

non-conducting powers of the atmosphere may afford. The effect is greater

than most people would credit. The uppermost layer of the earth, or

whatever may be lying exposed upon it, is called upon to part with a

great quantity of heat. If it so happen that the uppermost layer is of a

non-conducting nature, the heat abstracted from it will be poorly

resupplied by communication from the lower ones. Again, if the night be a

very calm one, there will be no supply of warmth from fresh currents of

air falling down upon it. Hence, in the treble event of a clear blue sky,

a non-conducting soil, and a perfectly still night, we are liable to have

great cold on the surface of the ground. This is shared by a thin layer

of air that immediately rests upon it; while at each successive inch in

height, the air becomes more nearly of its proper temperature. A vast

number of experiments have been made by Mr. Glaisher on this subject

('Phil. Trans.' 1847), the upshot of which is that a thermometer laid on

grass, under a blue sky on a calm night, marks on an average 8 degrees

Fahr. colder than one 4 feet above it; 1 inch above grass, 5 1/2 degrees;

1 foot, 1 degrees; 4 feet, 1/2 degrees; on gravel and sand the

differences are only about one-third as much. Sheep have a practical

knowledge of these differences. Often, in an early walk on dewy mornings,

I see all the sheep in Hyde Park bivouacked on the gravel walks of Rotten

Row. The above figures are the results of experiments made in England,

where the air is always moist, and the formation of dew, while it

testifies to the cold of the night, assists largely to moderate it. In

arid climates the chill would be far greater; such would also be the case

at high elevations. One of Mr. Glaisher's experiments showed a difference

of no less than 28 degrees between the cold on the ground and that at 8

feet high. This might often be rivalled in an elevated desert, as in that

of Mongolia. Hence the value of the protection of a roof and of a raised

sleeping-place, to a man sleeping under a blue sky in still weather,

admits of easy interpretation.

Various Methods of Bivouacking.--Unprotected.--Mr. Shaw, the traveller

in Thibet, says:--"My companion and I walked on to keep ourselves warm,

but halting at sunset, had to sit and freeze several hours before the

things came up. The best way of keeping warm on such an occasion, is to

squat down, kneeling against a bank, resting your head on the bank, and

nearly between your knees. Then tuck your overcoat in, all round you,

over head and all; and if you are lucky, and there is not too much wind,

you will make a little atmosphere of your own inside the covering, which

will be snug in comparison with the outside air. Your feet suffer

chiefly, but you learn to tie yourself into a kind of knot, bringing as

many surfaces of your body together as possible. I have passed whole

nights in this kneeling position, and slept well; whereas I should not

have got a wink had I been stretched at full length with such a scanty

covering as a great-coat."

Bushes.--I have shown that the main object before sleeping out at night

is to secure a long wind-tight wall, and that the next is to obtain a

roof. Both these objects may be attained by pleachingtwo or three small

neighbouring bushes into one; or branches may be torn off elsewhere and

interwoven between the bushes. A few leafy boughs, cut and stuck into the

ground, with their tops leaning over the bed, and secured in that

position by other boughs, wattled-in horizontally, give great protection.

Long grass, etc., should be plucked and strewn against them to make them

as wind-tight as possible.

Walls.--A pile of saddle-bags and other travelling gear may be made into

a good screen against the wind; and travellers usually arrange them with

that intention. Walls of stone may be built as a support to cloths, whose

office it is to render the walls wind-tight, and also by lapping over

their top, to form a partial roof. We have already spoken of a broad sod

of turf propped up on edge.

"The Thibetan traveller cares for no roof overhead if he can shelter

himself from the wind behind a three-foot wall. Hence the numerous little

enclosures clustered together like cells of a honeycomb at every

halting-place, with one side always raised against the prevailing wind.

(Shaw.) These walls are built round shallow pits, each with its rough

fireplace in the middle.

Cloths.--Any cloth may be made to give shelter by an arrangement like

that in the sketch.

[Sketch of cloth shelter].

The corners of the cloth should be secured by simple hitches in the rope,

and never by knots. The former are sufficient for all purposes of

security, but the latter will jam, and you may have to injure both cloth

and string to get them loose again. It is convenient to pin the sides of

the cloth with a skewer round the ropes. Any strip of wood makes a

skewer. Earth should be banked against the lowest edge of the cloth, to

keep out the wind, and to prevent its flapping. The sticks may, on an

emergency, be replaced by faggots of brushwood, by guns, or by ropes

carried down from the overhanging branches of a large tree. (For a sail

supported by oars, see "Sail Tent" p. 108.)

Fremont, the American traveller bivouacked as follows:--His rifles were

tied together near the muzzles, the butts resting on the ground widely

apart; a knife was laid on the rope that tied them together, to cut it in

case of an alarm; over this extempore framework was thrown a large

india-rubber cloth, with which he covered his packs when on the road; it

made a cover sufficiently large to receive about half of his bed, and was

a place of shelter for his instruments.

Gordon Cumming.--The following extract is from Mr. Gordon Cumming's book

on Africa: it describes the preparations of a practised traveller for a

short excursion from his wagons away into the bush. "I had at length got

into the way of making myself tolerably comfortable in the field, and

from this date I seldom went in quest of elephants without the following

impedimenta, i.e. a large blanket, which I folded and secured before my

saddle as a dragoon does his cloak, and two leather sacks, containing a

flannel shirt, warm trousers, and a woollen night-cap, spare ammunition,

washing-rod, coffee, bread, sugar, pepper and salt, dried meat, a wooden

bowl, and a tea-spoon. These sacks were carried on the shoulders of the

natives, for which service I remunerated them with beads. They also

carried my coffee-kettle, two calabashes of water, two American axes, and

two sickles, which I used every evening to cut grass for my bed, and

likewise for my horses to eat throughout the night; and my after-rider

carried extra ammunition and a spare rifle."

Importance of Comfort.--To conclude these general hints, let the

traveller, when out in trying weather, work hard at making his

sleeping-place perfectly dry and comfortable; he should not cease until

he is convinced that it will withstand the chill of the early morning,

when the heat of the yesterday's sun is exhausted, and that of the coming

sun has not begun to be felt. It is wretched beyond expression for a man

to lie shivering beneath a scanty covering and to feel the night air

become hourly more raw, while his life-blood has less power to withstand

it; and to think, self-reproachfully, how different would have been his

situation if he had simply had forethought and energy enough to cut and

draw twice the quantity of firewood, and to spend an extra half-hour in

labouring to make himself a snugger berth. The omission once made becomes

irreparable; for in the cold of a pitiless night he has hardly sufficient

stamina to rise and face the weather, and the darkness makes him unable

to cope with his difficulties.

Bivouac in Special Localities.--Encampment in Forests.--A clump of trees

yields wonderful shelter. The Swedes have a proverb that "the forest is

the poor man's jacket." In fir-woods there is great facility in making

warm encampments; for a young tree, when it is felled, yields both poles

to support branches for shields against weather, and finer cuttings for

flooring above the snow or damp. A common plan is to support a cross-bar

by two uprights, as shown in the figure; against this cross-bar a number

of poles are made to lean; on the back of the poles abundance of fir

branches are laid horizontally; and lastly, on the back of these are

another set of leaning poles, in order to secure them by their weight.

[Sketch of pole shelter].

On Bare Plains.--Avoid sleeping in slight hollows during clear still

weather. The cold stratum of air, of which I spoke in the section of

"Shelter from the Sky," pours down into them, like water from the

surrounding plain, and stagnates. Spring frosts are always more severely

felt in hollows. Therefore, in a broad level plain, especially if the

night be clear and calm, look out for some slightly rising ground for an

encampment. The chilled stratum of air drains from off it, and is

replaced by warmer air. Horses and cattle, as the night sets in, always

draw up to these higher grounds, which rise like islands through the sea

of mist that covers the plain.

Walls have been built for shelter against the wind, on a bare sandy

plain, by taking empty bags, filling them with sand, and then building

them up as if they had been stones.

Buried, or in Holes.--A European can live through a bitter night, on a

perfectly dry sandy plain, without any clothes besides what he has on, if

he buries his body pretty deeply in the sand, keeping only his head above

ground. It is a usual habit of the naked natives in Australia to do so,

and not an unfrequent one of the Hottentots of South Africa. Mr. Moffat

records with grateful surprise how he passed a night, of which he had

gloomy forebodings, in real comfort, even luxury, by adopting this

method. A man may be as comfortable in a burrow as in a den. I shall

speak of underground houses under "Hutting;" and for the present will

only mention that, in arid countries, dry wells, dug by natives and

partially choked by drifted sand, are often to be met with. They are

generally found near existing watering-places, where they have been

superseded by others, better placed and deeper. Now, there are few warmer

sleeping-places than one of these dry wells; a small fire is easily kept

burning at the bottom, and the top may be partially roofed over.

In Ashes of Camp Fire.--A few chill hours may be got over, in a plain

that affords no other shelter, by nestling among the ashes of a recently

burnt-out camp fire.

Warm Carcases.--In Napoleon's retreat, after his campaign in Russia, many

a soldier saved or prolonged his life by creeping within the warm and

reeking carcase of a horse that had died by the way.

By the water-side.--A stony beach makes a fine dry encamping-place, and

has this advantage, that it makes it impossible for marauders to creep up

unheard. But the immediate neighbourhood of fresh water is objectionable,

for, besides being exposed to malaria and mosquitoes, the night air is

more cold and penetrating by its side, than at one or two hundred yards'

distance from it. (I will speak of walls of rushes and reeds, under

"Huts.")

By Rocks.--In the cruel climate of Thibet, Dr. Hooker tells us that it is

the habit to encamp close to some large rock, because a rock absorbs heat

all day, and parts with it but slowly during the night-time. It is,

therefore, a reservoir of warmth when the sun is down, and its

neighbourhood is coveted in the night-time. Owing to the same cause,

acting in the opposite direction, the shadow of a broad rock is

peculiarly cool and grateful, during the heat of the day, in a thirsty

land.

On Heather.--Mr. St. John tells us of an excellent way in which Highland

poachers, when in a party usually pass frosty nights on the moor-side.

They cut quantities of heather, and strew part of it as a bed on the

ground; then all the party lie down, side by side, excepting one man

whose place among the rest is kept vacant for him. His business is to

spread plaids upon them as they lie, and to heap up the remainder of the

heather upon the plaids. This being accomplished, the man wriggles and

works himself into the gap that has been left for him in the midst of his

comrades.

[Sketch of sleeping arrangement].

On Snow.--I shall have to describe snow-houses and snow-walls covered

with sail-cloth, under "Huts." Here I will speak of more simple

arrangements. Dr. Kane says:--"We afterwards learnt to modify and reduce

our travelling-gear, and found that in direct proportion to its

simplicity and to our apparent privation of articles of supposed

necessity, were our actual comfort and practical efficiency. Step by

step, as long as our Arctic service continued, we went on reducing our

sledging outfit, until we at last came to the Esquimaux ultimatum of

simplicity--raw meat and a fur bag." Lieut. Cresswell, R.N., who, having

been detached from Captain McClure's ship in 1853, was the first officer

who ever accomplished the famous North-West passage, gave the following

graphic account of the routine of his journeying, in a speech at

Lynn:--"You must be aware that in Arctic travelling you must depend

entirely on your own resources. You have not a single thing else to

depend on except snow-water: no produce of the country, nor firewood, or

coals, or anything off the sort; and whatever you have to take, to

sustain you for the journey, you must carry or drag. It is found by

experience more easy to drag it on sledges than to carry it. The plan we

adopt is this:--we have a sledge generally manned by about six or ten

men, which we load with provisions, with tents, and all requisites for

travelling, simple cooking utensils, spirits-of-wine for cooking, etc.,

and start off. The quantity of people can generally drag over the ice is

forty days' provisions; that gives about 200 lbs. weight to each. After

starting from the ship, and having travelled a certain number of

hours--generally ten or eleven--we encamp for the night, or rather for

the day, because it is considered better to travel at night and sleep at

day, on account of the glare of the sun on the snow. We used to travel

journeys of about ten hours, and then encamp, light our spirits-of-wine,

put our kettle on it to thaw our snow-water, and after we had had our

supper--just a piece of pemmican and a glass of water--we were glad to

smoke our pipes and turn into bed. The first thing we did, after pitching

the tent, was to lay a sort of macintosh covering over the snow; on this

a piece of buffalo robe was stretched. Each man and officer had a blanket

sewn up in the form of a bag; and into these we used to jump, much in the

same way as you may see a boy do in a sack. We lay down head and feet,

the next person to me having his head to my feet, and his feet to my

head, so that we lay like herrings in a barrel. After this, we covered

ourselves with skin, spreading them over the whole of us; and the closer

we got, the better, as there was more warmth. We lay till the morning,

and then the process was the same again." It appears that people may bury

themselves in snow, and want neither air nor warmth. I have never made

the experiment; but have read of numerous instances of people falling

into snow-drifts, and not being extricated for many days, and when at

length they were taken out, they never seem to have complained of cold,

or any other sufferings than those of hunger and of anxiety.

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