In the first place, there can be no question here about steam navigation,

the circle of which extends daily more and more, for the projected

Canal will be the triumph of steam; it will greatly increase the use of

the screw, and give a new stimulus to British navigation, which will

be charged with the delivery of English coal throughout the whole line

from London to Australia. We will therefore only examine the case of

navigation by sailing vessels. Now, we learn from history, that from

the most distant ages, this navigation has flourished in the Red Sea,

and that after the discovery of the Cape of Good Hope (in 1497), the

Portuguese considered it necessary to have a fleet, which, in 1538,

destroyed all the merchant vessels of the Turks and Venetians. If in

later times commerce took the way of the Cape, we have only to thank the

Turkish sovereignty of the period, which allowed the arts, sciences,

and industry to perish, at the same time that it forbade the navigation

of the Red Sea to the European nations. How can this navigation be

considered full of danger at the present day, when nautical science

and the art of ship-building have made such great progress, and when

everything relating to the winds, the currents, and the coasts of the Red

Sea, is perfectly well known?

To leave no doubt on the subject, we will repeat the most important

observations which have been made on the Red Sea and Indian Ocean.

This is what the English traveller, Bruce, says in 1769:—

“Those who are at all acquainted with the history of Egypt, are aware

that the north wind, there called the Etesian wind, prevails during

the six hottest months of the year. The two chains of mountains, which

confine Egypt to the east and west, compel this wind to follow precisely

this northerly direction. It is reasonable to suppose that it would be

the same for the Arabian Gulf, if the course of that narrow sea were

parallel to the land of Egypt. But the Red Sea extends nearly from

north-west to south-east, from Suez to Mocha; there it alters its course,

and proceeds nearly from east to west, as far as its junction with the

Indian Ocean at the straits of Bab-el-Mandeb.

“Thus the Etesian wind, which is due north in Egypt, follows the course

of the gulf, and blows with force in that direction all the summer; that

is to say, that from the month of April till the month of October, the

north-east wind prevails over the whole extent of the Red Sea, descending

as far as the straits; and that from November to March, the wind has

quite a contrary direction, and ascends the gulf from the straits of

Bab-el-Mandeb, up to the Isthmus of Suez.

“It is observed, then, that a vessel starting from Suez, in any of the

summer months encounters a very violent north-west wind, which will carry

it direct from the gulf to Mocha. At Mocha the coast goes from east to

west, as far as the straits of Bab-el-Mandeb. Thus a vessel sailing from

Mocha will, in a short space of time, experience variable winds but

mostly blowing from the west, and these winds will soon carry it to the

straits. It therefore no longer wants the monsoon of the gulf, which blew

from the north; and when it has passed into the Indian Ocean, it meets

with another monsoon blowing in an opposite direction, during the six

summer months, to the one which had favoured its progress in the Red Sea.

This monsoon is no less favourable; it blows from the south-west, and

carries the ship full sail, without delay or obstacle, into any required

port of India.

“Returning, the same advantages may be secured by setting sail during

the winter months with the monsoon peculiar to that sea, which then

blows from the north-east, and will carry the ship to the straits of

Bab-el-Mandeb. When the straits are passed it will meet with a south-east

wind in the gulf, exactly contrary to the one in the ocean, but the

course of the ship is also contrary, and this south-east wind, following

the direction of the gulf, will bring it to Suez. All this is clear,

simple, and easily understood, and thus it is, that in the earliest ages

the commerce of India was carried on without any difficulty.

“Thus the philosophy, the observation and the indefatigable perseverance

of man, who endeavours to carry out every project which his interest

suggests, triumphing over difficulties, have taught the navigators of

the Arabian Gulf, that those periodical winds which they had, at first,

regarded as insuperable obstacles to the trade of the Indian Ocean, are,

when understood, the safest and the quickest means of performing the

voyage.”

Mr. Rooke, an English officer, speaks in these terms, of the navigation

of the Red Sea in a letter dated April 25, 1782.

“The construction and management of the vessels are equally singular,

and I fear any description will fall infinitely short of the original;

they were, I believe, designed by those who built them, to bear some

resemblance to ships, but, having few of the properties of those

machines, proceed on a principle totally different from any I before

beheld; that _primum mobile_ to which ships of other countries are

indebted for their voyages is here of little use, and calms are more

favourable than wind to forward their progress; ... they ... seem

equally averse to a fair as to a contrary wind, remaining at anchor

until it subsides into a calm, their busy scene then commences, the

anchor is weighed and the vessel put in motion by means of the boat with

about twenty oars in it, towing till a breeze springs up; when this

begins to be more than what our seamen call a light air, they hurry to

the shore and let go their anchor, and for this purpose always choose a

berth the most environed by rocks and shoals, never thinking themselves

secure but when in the midst of danger; their common time of anchoring

was about two o’clock in the afternoon, for about that time the breeze

generally freshened, and in proportion as that increases they put out

anchors, till they have six in the water, and two or three hawsers

besides, to tie them to the surrounding rocks: ... in what they called

good weather, we had not above two anchors out, and if it fell calm after

sunset they ventured to get one of them up, that they might be ready for

the land breeze in the morning, which generally sprung up at two o’clock

and blew till nine or ten.... I believe, without these land breezes we

should never have arrived at Suez; a circumstance that very frequently

happens to many vessels of this annual fleet, for if they do not make

good their passage before the latter end of May, the northerly winds blow

so constantly as to render it impossible, for vessels that cannot work to

windward, to get up the narrow channel from Tor to Suez.

“When it is remembered that the journey from London to Madras has been

performed in sixty-three days, it is surprising to see the English

neglect so great an advantage when they have the power of securing it.”

Vice Admiral Rosily, who navigated the Red Sea in 1789, on board the

frigate Venus, and who was consulted by M. Lepère, was far from admitting

the dangers and difficulties of the Red Sea to be as great as is usually

supposed. In fact, these dangers, conjured up solely by the ignorance of

ancient and modern navigators, have been accredited by general opinion,

or rather by general mistake. The frigate Venus traversed the Red Sea

in all directions without experiencing either damage or difficulty.

We may therefore rest assured, that no merchant vessel will encounter

any difficulties but those which are inseparable from all narrow seas;

the Adriatic, which is still narrower than the Red Sea, has never been

considered impassable.

The coasts alone of the Red Sea are dangerous, but the number of

anchorages is so great that the sailors of the country never navigate at

night, but anchor every evening. In rough weather they remain at anchor

sometimes for a week or a fortnight at the same place, without daring to

gain the open sea or take advantage of any wind that would be favourable

to an European ship.

The excellent work of Commander Moresby and Captain Rogers on the Red

Sea, written by command of the East India Company, to resolve the

question of its navigation, and in consequence of which the steam service

of the Red Sea was established; this excellent work, we say, if it does

not represent the monsoons to be as regular as is stated by Bruce, does

not contradict the generality of the facts given by that traveller, as

may be judged from the following extracts:—

OF THE WINDS AND CURRENTS BETWEEN SUEZ AND GEDDAH, BY CAPTAIN

MORESBY.

“From Suez to Geddah, during the whole course of the year,

the wind is generally north, and blows, at times, with great

violence; but it abates usually at the change of the moon.

During the winter months, from December to April, the south

wind prevails, sometimes for a few days, and occasionally blows

fresh, more particularly in the Sea of Suez, where it sometimes

attains the force of a moderate gust. At this season gusts from

the west are not uncommon in the Sea of Suez, and are much

dreaded by the inhabitants in consequence of their violence. On

the Arabian coast, near Geddah, to the south and north of that

port, the north and north-west winds sometimes blow with great

violence during the winter months, and bring with them clouds

of dust from the land.

“The south wind, which blows sometimes from October to May,

generally occasions a current of twenty or thirty miles a day.

After a gust from the north-west, when there is a light breeze,

there is generally a current towards the north. It is then

better to beat along the Arabian side than the Egyptian, as was

the practice of ancient navigators, who considered the latter

coast more healthy.

“The average length of the passage from Geddah to Cosseir

depends so much on circumstances, that it is impossible to

assign any fixed term for it. It is, however, rarely more than

twenty or less than ten days. With the boats of the country it

takes from twenty-five to thirty days, and sometimes more.”

ON THE WINDS AND CURRENTS OF THE RED SEA THROUGHOUT THE YEAR,

BY CAPT. ROGERS.

“From the beginning of October to the end of April, during

what we may call the winter months, between the straits of

Bab-el-Mandeb and Gebel Tor, in about latitude 15° 30´ north,

the wind may be said to blow continually from the south, with

the exception of a day or two at the time of the new or full

moon, when it sometimes blows from the north. But frequently,

for two months at a time, there is no change.

“From Gebel Tor to latitude 19° or 20° the winds are variable

at the same period, and blow as much from the north as from the

south. One or other of these winds respectively prevails as you

approach one or the other of these limits.

“From 21° to 27° the north wind prevails during the same

season, but half a lunation seldom passes without there being

one or two days of south wind, especially from the end of

November to the beginning of March.

“From 27° to Suez, the wind is, almost constantly, north, and

seldom interrupted by any wind from the south, unless it be in

the months of December, January, and February.

“In June, July, August, and September the north wind prevails

without interruption, throughout the whole extent of the Red

Sea, from Suez to Bab-el-Mandeb. Occasionally a change takes

place, from the land side, principally in August and September,

and during these months a fast sailer can make thirty-five

miles a-day, beating from Mocha to Suez. In December, January,

and February, a vessel will sometimes meet with a good wind

from Mocha to Cosseir, and accomplish the run in six or seven

days, whereas it is impossible to do the same from Cosseir to

Mocha except in summer.”

It appears from these extracts that the Red Sea is easily navigable, at

all seasons, by sailing vessels, and that it is always possible so to

arrange the periods of departure as to traverse it in both directions.

We ought also to take into account the inconveniences experienced in

the voyage round the Cape, resulting from the settled calms succeeding

the continued tempests, the diseases which decimate the crews, and the

disasters which are so frequent on passing the equator. We should also

take into consideration that, if the difficulties are greater during a

good part of the year for vessels going up the Red Sea, vessels coming

down are, for that very reason, sure to meet with favourable winds.

To leave no doubt on so important a question, and on which depends, in

part, the success of the enterprise in contemplation, we will give a

passage from a paper communicated to the _Société de Géographie_, by

Count d’Escayrac de Lauture, the motto of which is,

“Aperire terram gentibus.”

“If the _minimum_ distances which separate the ports of Europe

from those of India, on the one part by the Cape of Good Hope,

and on the other by the Canal of the two Seas, be compared with

each other, enormous differences in favour of the latter route

will be made manifest. These differences become still greater,

when it is recollected that, in navigation, a straight line is

far from being the shortest way from one point to another, and

that navigators only reach their destination by successively

following a certain number of courses, which form greater or

lesser angles with each other.

“So that instead of steering directly for the Cape of Good

Hope, mariners starting from Europe or the Atlantic ports of

North America to go to India, must make the Canaries or the

Azores; get into the track of the trade winds of the northern

hemisphere, reach the coast of Brazil, and make Cape Frio, or

put in at Rio Janeiro. It is only then that they can make for

the Cape of Good Hope, better named, perhaps, Cape Tempestuous.

They clear at length the Agulhas Bank, reach Bourbon or the

Mauritius, and thence proceed to India in the track of the

monsoon.

“Vessels from the Mediterranean have still greater

disadvantages to contend against. It frequently takes them a

fortnight to pass the straits of Gibraltar, in consequence

of the west wind which prevails in those straits, and the

rapid current which pours the waters of the ocean into the

Mediterranean.

“The consequence is, that the passage to India takes at least

from five months to five months and a half. The passage back

is rather more direct, without being to any perceptible degree

shorter. The coast of Africa may then be followed more closely,

thanks to the trade winds of the southern hemisphere. The place

to put in at, in this case, is St. Helena.

“If we now examine the conditions to which navigation is

subjected in the three seas nearest to Suez, that is to say,

the Mediterranean, the Red Sea, and the Gulf of Oman, we shall

find that in the Mediterranean the winds blow from the north

during the greater part of the year, change to the south by

east towards the spring, and return to the north, passing by

the west and north-west. The case is nearly the same with

regard to the Red Sea, where the north wind, which is the most

frequent, drives the waters in the direction of Bab-el-Mandeb,

so that when the calm succeeds, a current is observed running

north. This is evidently produced by the waters which had been

raised in the south endeavouring to regain their level. The

south wind usually succeeds the calm.

“The Gulf of Oman has two monsoons, that from the north-east,

which prevails with more constancy in the winter, and that from

the south-west, which blows with force in summer. The change

from one monsoon to the other is effected, there as elsewhere,

by a series of calms and gusts of wind.

“From these circumstances it would appear most advantageous to

sail to India by the canal in summer and autumn, and to return

towards the spring.

“The great shortening of the distance between the ports of

Europe, and those of India, is not the only advantage which

commerce will derive by frequenting the canal of the two Seas.

In fact, vessels will not only reach their destination in a

shorter time, but will meet on their route with numerous ports

to put in at, and, what is more important still, considerable

markets. The voyager, after having followed the easy track of

the Mediterranean, will sell a part of his cargo in the Canal

of Suez, or at Geddah; will buy ivory at Massaoux, Souken and

Berbera, which he will either exchange in India, for opium, or

carry on to China to obtain silk or tea.

“He will complete his homeward cargo with the colonial produce

of Manilla, the Sunda Islands, and Ceylon, with cotton from

India, or Egypt, with coffee from Abyssinia, or Yemen, with

gum from Soudan or Hedjaz, with corn from Lower Egypt, or with

rice from Damietta. And these multifarious operations, which

now require years, will be safely and rapidly accomplished with

little capital and small ships.

“In fact, by reducing the time required for commercial

operations we also reduce the general costs, make a much

greater number of these operations possible in a given time,

and, by that means, give facilities to small traders, by far

the most numerous class.

“By opening to navigation an easier and safer route, we bring

into use ships of less tonnage, and more economically equipped;

in one word, we throw open the road to India to the coasting

trade—WE DEMOCRATISE COMMERCE AND NAVIGATION.”

To these details, we will add our own personal observations. We may say

that the navigation of the Red Sea is always easy, from the straits to

Raz Mohammed, because there are no rocks in the middle of the gulf, and

it being always possible to beat when the monsoon is not favourable, and

if some danger is to be feared at Raz Mohammed, from whirlwinds, currents

and rocks, they will disappear as soon as a good lighthouse is erected,

and a station of steam tugs established to assist vessels against the

contrary winds.

Sailing may then be said to have attained the limit of its advantages,

for it will profit by favourable winds to perform the transport service

with economy; and in those parts of the passage where difficulties are to

be encountered, steam will come in aid, by which danger and loss of time

will be avoided.

Another objection which has been raised against the direct canal is, that

being cut through moving downs, it will soon be encumbered by them, and

that the expense of keeping it in order, will consequently be so great,

that it will be necessary to abandon it, if it ever be undertaken.

To refute this objection we will recapitulate the facts in their actual

integrity.

From Suez to the extremity of the Bitter Lakes, the soil is, it is true,

sandy at the surface, but however sandy it may be, the winds do not

produce any modification in the superficial state of this part of the

Isthmus.

This is to be accounted for by the fine sand being kept moist by the sea

water, which reaches the surface by percolation and capillary attraction;

the sand, which is out of reach of the moisture, is coarse sand, or

rather small gravel, bound together by magnesian earth, in such a manner

that the wind has no effect upon it. So true is this, that at several

places in this desert we found, in December, 1854, the traces left by the

tents of the engineers who were employed there in 1847.

The best proof that can be given of the stability of the soil in this

part of the desert is the situation of the banks of the ancient canal,

which still remain all along, as far as the Bitter Lakes. The torrents of

rain which sometimes fall in this locality, may well, in 1200 years, have

worn ravines in these banks, and partly filled the canal. In some parts

even, the banks have been carried away by sudden torrents, but nowhere

are they buried by the sand. Vestiges of antiquity, two or three thousand

years old, may still be seen at the surface of the soil on the very line

through which the canal is to pass. It is only on approaching Lake Timsah

that moveable downs are met with, which surround and cut it in several

places, changing their shape rather than their position; all the other

downs which are met with in the form of chains of hillocks, and which

occupy the space comprised between the bar of El Guisr and Pelusium, have

long been naturally fixed by various plants, which have sprung up there

under the influence of heat and moisture. It is, then, only the downs

in the vicinity of Lake Timsah which require to be fixed artificially.

Now, the fixing of downs has already become a special branch of industry

presenting great advantages. The hills of sand which devastated the

_Landes_ of Bordeaux, and advanced every year into the interior of the

country, rendering it barren, are now transformed into magnificent pine

forests, which yield turpentine, pitch, various kinds of resin and timber.

This change, or rather this miracle, was effected by the simplest

means. After an attentive examination of the facts, M. Bremontier,

engineer-general, to whom we are indebted for the fixing of the downs,

had observed that, in digging at the summit of the most elevated downs,

the sand was moist at a few _centimetres_ from the surface.

Struck by this circumstance, he saw at once that vegetation would be

possible, if the sand could be prevented from being displaced by the

wind. He consequently imagined various means of obtaining this result,

and his efforts were crowned with complete success. He sowed on several

downs the seeds of the maritime pine, which have now become magnificent

forests.

After being assured, by long experience, of the advantages which might be

derived from the fixing of the downs, M. Bremontier addressed a report

to the Government of the Republic, in which are found the following

valuations:—

“The surface of the downs, which form the _Landes_ of Bordeaux,” says

he, “being equal to 337,000 _Bordeaux journaux_, of 840 _square toises_,

the amount required to fix the whole of these downs would be 8,000,000

_livres_. Now, a _journal_ (0 _hect._, 33) of sand planted with pines,

gives an annual return of fifteen _livres_, that of 337,000 _journaux_

would therefore be of 5,055,000 _livres_. It is supposed here that the

_Journal_ planted with pines only yields three quintals of resin, and

the price may be taken at five francs the quintal; but the plantations,

at the end of seven or eight years, will produce an immense quantity of

combustibles, and afterwards charcoal, boards, timber for building, and

finally tar. It is true that the pines are not of full value until twenty

or twenty-five years after planting; there will be, however, an interest

of twelve and a half per cent. as a deduction from all expenses.”

Much more simple means are employed at present, to fix the downs by

sowing, for it is mostly considered sufficient to plant branches of

broom, furze, or pine in quincunx upon the down to be sown and to scatter

various seeds broadcast, and cover them lightly with a rake. These are

called _tufted seed plots_. The expense of a _hectare_ is 66 _fr._, 80,

which is made up as follows, as appears from the accounts kept by the

engineers entrusted with these works:—

460 faggots at _fr._ 2,50 per C. _fr._ 11,50

16 _Kilos._ pine seeds 0,45 7,20

2 rush 2,50 5,00

2 furze 0,25 0,50

6 hay 0,10 0,60

Labour 1 day, 90. for a gang 22,10 41,99

-----

Cost of 1 hectare _fr._ 66,79

The gang is composed of—

A Foreman _fr._ 2,00 _fr._ 2,00

6 Workmen 1,25 7,50

12 Women 0,75 9,00

6 Children 0,60 3,60

-----

Total _per diem_ _fr._ 22,10

At the eighth year they begin to yield interest on the capital and cost

of keeping up (which is almost nothing), from the combustible that is

obtained by removing the surplus, from making charcoal, &c. &c. At twenty

years they begin to extract resin from the trees, at thirty years the

produce is most abundant, and continues up to eighty years, when the

wood is fit for building purposes. Then new seed plots are formed in

proportion as the old trees are removed.

The annual produce of resin gathered from a _hectare_ of pines is an

average of five _metric quintals_, which, at the rate of twenty-two

_francs_ per quintal, gives a revenue of 110 _francs_, and represents at

least seventy per cent. of the capital employed.

It will be seen by this statement, that the fixing of the downs has

become one of the most productive operations of Silviculture, and that it

offers one of the most advantageous investments for capital.

The Isthmus of Suez Question · 第 5 / 12 段