Lasciate ogni speranza voi che entrate;[2]

and not a few pictured to themselves a body of troops visiting these

sands half a century later, and finding the bones of Cavaignac's army

scattered here and there over the plains.

Hitherto the atmosphere had always been perfectly clear, but now it

was thick and cold, the horizon wearing that gray, heavy aspect which

in Europe precedes a fall of snow. No one, however, ventured to

pronounce this word; it appeared an occurrence so unlikely in the

plain, at such a season and under such a latitude. What, then, was our

surprise, on awaking on the morning of the 19th of April, to find the

tents covered with a thick sheet of snow, and to see the vast expanse

of the desert white to the verge of the horizon, like the frozen

steppes of Siberia! The general ordered the camp to be raised

immediately, for the bivouac afforded very scanty materials for fire,

and he hoped there might be wood in the mountains if he could reach

them. The snow continued to fall in large flakes; the troops, anxious

and sorrowful, described a thousand circuits and made a thousand

useless turnings, for our Arab guides were utterly at fault. During

three or four months previous to the expedition, Cavaignac had been

selecting and retaining as guides whatever Saharians he could find

acquainted with that part of the desert he intended to traverse. The

Arabs are gifted with remarkable dexterity in steering without

compass, recognising a footstep imperceptible to the common eye,

scenting the water at a distance, and finding their way by marks which

would escape the most observant European. A Saharian once affirmed to

Colonel Daumas: 'I am not considered remarkably sharp-sighted, but I

can distinguish a goat from a sheep at the distance of a day's

journey; and I know some who smell the smoke of a pipe, or of broiled

meat, at thirty miles! We all know each other by the track of our feet

in the sand, for no one tribe walks like another, nor does a wife

leave the same footprint as an unmarried woman. If a hare has passed,

we know by its footprint whether it is male or female, and, in the

latter case, whether it is with young. If we see the stone of a date,

we know the particular tree that produced it.'

Our conductors, though not pretending to all this sagacity, were

nevertheless far in advance of some of us who proudly called ourselves

'old Africans,' and considered ourselves wonderfully expert in

tracking the desert paths. But now the landmarks on which they

depended had disappeared beneath the snow; and the atmosphere was so

surcharged with it, that the mountain summits could no longer be

descried. At length the guides abandoned the hopeless effort, and

declared that they had entirely lost the way, and knew not in what

direction to proceed. At this juncture, Cavaignac, remembering that

the mountains had appeared due south on the preceding evening, seized

his compass, and boldly ordered the troops in that direction. It was

the only hope; but the march became so fatiguing, and the natives gave

so little encouragement to the expectation of finding the mountains

wooded, that a halt was ordered, and a bivouac on the snowy plain.

Many were the miseries that attended this encampment. The rattling of

arms was heard on every side, for the soldiers were shivering to such

a degree that they could not hold their guns steadily. What would they

not now have given for some of the wood they had so wantonly destroyed

in the forests of the Tell! But the bivouac was not even supplied with

chiah--one of the commonest plants in Sahara, having a ligneous root,

which had hitherto served us for fuel when everything else failed.

Nothing was to be found but halfa, green, and steeped in snow; and the

most skilful kindlers succeeded only in amusing themselves for a time

with poor, little fires, that emitted more smoke than flame. The men,

of course, could not make their soup; but the general ordered them

rations of biscuit and coffee. For my own part, not being able to make

a fire of wet halfa, I was looking disconsolately at a bit of biscuit,

and a little morsel of cheese, which was to compose my dinner, when

Lieutenant N---- sent word that his fire-makers had been more

successful, and that they offered me a corner. In a few minutes, I sat

down to two boiled eggs, which appeared delicious. Meanwhile, the

night drew on. The soldier's bed out-of-doors is a sheepskin laid on

the bare ground, under a tent so small that he cannot stand upright in

it. Now, as the earth was very damp, those who did not take the

precaution of choosing a little mound, and removing a portion of the

wet soil, soon found themselves literally in the mud, and were obliged

to get up, and walk about all night.

The snow continued to fall thick and fast, the thermometer marking 7

degrees below the freezing-point during the night. Some days before,

it had been 125 degrees Fahrenheit in the sun; so that we were doomed,

as in the Purgatory of Dante--

A sofferir tormenti caldi e geli;

from which, by the way, Milton has obviously borrowed his idea of

infernal torment:

---- And feel by turns the bitter change

Of fierce extremes, extremes by change more fierce,

From beds of raging fire, to starve in ice

Their soft ethereal warmth, and there to pine

Immovable, infixed, and frozen round,

Periods of time, thence hurried back to fire.

At the sound of the morning watch-gun, the camp presented a most

distressing spectacle. The Arabs and negroes of the convoy were lying

motionless in the open air, rolled in their burnooses. Many of these

poor creatures were but lightly clad, and had the lower limbs entirely

naked. They were so benumbed and stupified with cold, that they

refused to rise and load the camels; they begged to be allowed to lie

still and die in peace. The cattle also were in a sad condition, not

only from cold, but hunger; for the snow-covered ground afforded them

no pasture. As part of the provisions had been damaged, it was now

asked in dismay, what would become of the army if the beasts should

perish? The recollection of the disaster at Boo-Taleb, where the

column of General Levasseur left so many men in the snow, occurred to

the stoutest hearts. But even darker shades mingled in the prospects

of our troops; for 'General Levasseur,' said they, 'was only thirty

miles from a post occupied by French troops, and the neighbouring

tribes raised and reanimated those whom they found alive, though

benumbed on the plain; but we, in the midst of the desert, far from

any human dwelling, what will become of us? Hunger, thirst, and the

enemy, will soon finish the remains of our unfortunate army.'

But the officers are on foot, setting the example of vigorous

exertion, and striving to comfort and encourage the men; while the

calm and quiet prudence of the general inspires every one with

confidence in endeavouring to obey his orders, as the only hope of

deliverance. We begin our march: the snow is now falling only at

intervals; it lies two feet deep in the hollow plains, and above a

foot on the level and rising ground.

Some of the men, however, remained as if nailed to the soil--not only

their limbs benumbed, but their mental energies so paralysed as to be

incapable of acting on the physical; the mind inaccessible to moral

incentives, and the body insensible to the influence of outward

stimulants. By and by they found energy to beg that they might be

hoisted on the arm-chairs; but this was peremptorily refused. Since

Napoleon's retreat from Moscow, and the recent work of Dr Shrimpton on

the disaster at Boo-Taleb, every one knows the consequence of

indulging this deceitful stupor.

But we found we must do more than talk; so we set the drums and

trumpets about the ears of the sleepers, and made their comrades shake

them with all their might. It was not till after an hour's march, in

which coaxing, scolding, and pushing, stimulants to laughter and

provocatives to anger, had been incessantly employed in turn, that the

vital powers appeared to be in tolerably full play. There was one man

more obstinate than the rest, who, in order to get a place on one of

the cacolets, threatened every minute to lie down on the ground. I

slid among the ranks, and began telling one of his comrades all the

horrible stories I knew of those who, yielding to sleep in the cold,

had awaked no more; adding, with affected indifference: 'I am afraid

we shall have to leave some of our poor men as a supper for the hyenas

to-night. There are two or three of them so benumbed and stupified,

that they will perish if they halt for a single instant.' In a few

minutes, I learned that the soldier had done begging to be carried; he

said his strength was returning.

In the midst of so much human distress, it seems almost like trifling

to advert to the poor swallows. On awaking in the morning, I had found

two under my bed-cover. They allowed themselves to be taken, and

either could not, or would not fly away when I tried to banish them.

So I put them in the hood of my cloak, and allowed it to fall down my

back, while I raised over my head that of the ample burnoose which I

wear in the cold above all my other garments. The swallows travelled

thus for several hours, and gradually recovered in their warm nest.

When the sun emitted some genial rays, I took them out, and set them

free. They fluttered for some time round my horse, uttering a little

cry, which I took for an expression of gratitude before taking flight

into the mountains.

Other companies of them had taken shelter under the matted hair which

hangs from the flanks of the camel; and when the pitiless driver

persisted in dislodging them, they departed with a plaintive cry, to

seek an asylum with a camel whose driver was more hospitable. A

sentinel had found one in his pocket during the night, but it paid

dearly for its lodging--he roasted it for his supper! These poor birds

had fled from the rigours of a European winter, to find cold as severe

in the heart of Africa. Alas! how many of us felt that, like the

swallows, we had exiled ourselves to improve our fortunes, and were

now in danger of perishing. How gladly would we have resigned all our

hopes of glory and advantage for the fireside of the modest paternal

dwelling!

But before night we encamped in the shelter of the mountains; the

chiah, which grew in abundance around us, enabled us to kindle fires,

and a salutary reaction took place in the spirits of the troops.

According to a common practice of mine, I invited to supper the man

whose life I had saved by frightening him into exertion. After

swallowing a glass of warm wine, well sugared, and spiced with

tincture of cinnamon, he licked his lips, sucked the edges of his

glass, and said: 'Thank ye, doctor; but for you I should have been

dead,' with a naïveté which I can never forget, and which even now

mingles pleasing associations with the thoughts of those days of

suffering.

The next day nearly 200 of the men were affected with partial or total

blindness. Some had merely a sensation like fatigue of the visual

organs, with heaviness, watering, and inflammation of the conjunctive

membrane. But with others the pain was acute, the eye much inflamed,

and the cornea covered with minute ulcerations. Those who were more

slightly affected, marched like persons enveloped in a cloud of smoke,

and trying to see their way out of it; they took a few steps with

their eyes shut, then half opened them with evident pain to

reconnoitre the ground before them, and quickly closed them again. But

many had for the time wholly lost their sight; they stumbled on the

tufts of halfa, and rolled on the ground, so that we were obliged to

hoist them on the cacolets. The general, in a state of much

uneasiness, called a council of such members of the military corps of

health as were found in his column. Some were of opinion that this

epidemic was occasioned by the sudden cold, others that it was

attributable to the smoke of the chiah; but the truth is, that, both

before and after this period, we had experienced nearly as great

extremes of heat by day and cold by night without any such

consequences, and that some, who had not approached the chiah fires

were as severely affected as those who had. It was concluded, with

every appearance of reason, that the real cause was the dazzling light

reflected from the snow during our march on the 20th of April. I

recollect one artilleryman, who was conducting his gun, when suddenly,

as the sun broke out afresh, he stopped, rubbed his eyes, turned his

head in every direction, and exclaimed: 'I cannot see; I am quite

blind!' Although we had not expected snow in the plains of Sahara, the

general had anticipated the effects of the reflection of light from

the sand, and the possibility of small particles of it getting into

the eyes; and with this view each man had been provided with a green

gauze veil. But the soldier dislikes anything out of his regular

routine as much as the most ignorant peasant; so when the order was

given that these veils should be worn,[3] the soldiers wore them to

be sure--in their pockets. I insisted that each man should fasten his

on his helmet, and this, too, was done; but it was allowed to fly like

a streamer behind, instead of being drawn over the eyes. Happily the

epidemic was but temporary, and none permanently suffered the loss of

sight as the punishment of his folly.

Chambers's Edinburgh Journal, No. 452 Volume 18, New Series, August 28, 1852 · 第 9 / 17 题