Besides this account given by Mr. Maxwell, there are other testimonies to the magnitude of the Congo, shewing it to be a river of the first cla.s.s, and larger probably than the Nile. In a journal (which the editor has seen) of an intelligent and respectable naval officer, Captain Scobell, who visited the coast of Africa in the year 1813, in H.M. sloop of war the Thais, the Congo is described as "an immense river from which issues a continued stream at the rate of four or five knots in the dry, and six or seven in the rainy season." In a subsequent pa.s.sage he says, "In crossing this stream, I met several floating islands, or broken ma.s.ses from the banks of that n.o.ble river, which, with the trees still erect, and the whole wafting to the motion of the sea, rushed far into the ocean, and formed a novel prospect even to persons accustomed to the phenomena of the waters." He adds, that there are soundings to the distance of from thirty or forty miles from the coast, arising probably from the vast quant.i.ty of alluvial matter brought down by the force of the stream.

Other accounts state, that the waters of the Congo may be distinguished at sea more than thirty leagues from the coast, and that the water is fresh at the distance of thirty miles.

[Footnote: Lopez, Merulla, and Dapper, referred to in Phillips's Voyages, vol. iii. p. 236.]

These, perhaps, are exaggerations; but they may be received, in confirmation of the preceding testimonies, as sufficient proofs of a general opinion among navigators with regard to the size and force of this prodigious river. It is mentioned by Major Rennell in his very interesting account of the Ganges, that the sea in the bay of Bengal ceases to be affected by the waters of that river, and recovers its transparency, only at the distance of about twenty leagues from the coast. (Phil. Transactions, vol. lxxi.) But the Ganges being obstructed by its Delta, and pa.s.sing through eight channels into the sea, is probably much less rapid and impetuous than the Congo.

To this it must be added, that all the accounts concur in representing, that the stream of the Congo is of a more uniform height, and subject to much less variation from the dry and rainy seasons, than any tropical river which is known; and that on a comparison with such rivers, it may be considered to be _in a perpetual state of flood_. The average rising of the Ganges in the rainy season is stated by Major Rennell to be 31 feet, being about the same with that of the Nile; whereas, the difference between the highest point of the Congo about February, and the lowest in September, is only about nine feet; and the river, at the latter period, has all the appearance to a stranger of being in full flood.

[Footnote: MS. Letter of Mr. Maxwell to Mr. Park, Oct. 12, 1804.]

It is this remarkable peculiarity, which distinguishes the Congo from other great rivers of a similar description, and which leads to important conclusions with regard to its origin and course.

In support, then, of the hypothesis which identifies the Congo with the Niger, the following arguments, deduced from the preceding facts and observations, may be alleged:--1. The great magnitude of the Congo. 2.

The probability that this river is derived from very remote sources, perhaps considerably north of the equator. 3. The fact, that there exists a great river north of the equator, (the Niger,) of which the termination is unknown, and which may, perhaps, form the princ.i.p.al branch of the Congo. These, in truth, are the only grounds upon which the present supposition can be fairly said to rest. Arguments founded upon etymological conjectures, supposed resemblances of names, or affinity of languages, &c. &c., are, for the most part, too arbitrary and fanciful, and liable to too much uncertainty to be ent.i.tled to any place in disquisitions of this nature. The same remark is applicable to the narratives and descriptions given by native travellers and merchants, and, in general, to all _African evidence_ whatever, except when supported by collateral proof from other less exceptionable sources.

Such being the evidence in favour of the hypothesis respecting the Congo, the objections against this theory must be admitted to be weighty and formidable. The princ.i.p.al of these are, 1. That it supposes the course of the Niger to lie through the vast chain of the _Kong_ Mountains (anciently _Montes Lunae_), the great central belt of Africa. Of the existence of these mountains there appears to be no doubt; and from their situation in the midst of a great continent, they may reasonably be supposed to be of vast size and extent; in which case it is difficult to understand, how the Niger could penetrate this barrier, and force a pa.s.sage southwards. 2. The course of the Niger, estimated from its source in the mountains of Senegal (supposing it to be the same river with the Congo, and to flow by w.a.n.gara and Cashna through the centre of Africa into the Atlantic), would be considerably more than 4000 miles. But the course of the Amazon, the greatest river in the old or new world with which we are acquainted, is only about 3500 miles; and, although the existence of a river considerably greater than any yet known, may be within the limits of physical possibility; yet, so improbable a supposition ought not to be adopted upon slight or conjectural reasoning, or upon any thing much short of distinct and positive proof. To give such a vast extension to the Congo upon the grounds stated by Mr. Maxwell, might justly be considered as one of those exaggerations, to which, according to a remark of D'Anville, geographical writers upon Africa have always been remarkably p.r.o.ne, 'en abusant, pour ainsi dire, du vaste carriere que l'interieur de l'Afrique y laissoit prendre.' (Mem. de l'Academie des Inscriptions, Tom. xxvi p. 61.)

[Footnote: The following scale (taken from Major Rennell's Memoir of a Map of Hindostan, p. 337,) shewing the _proportional length_ of some of the most considerable rivers already known, may be useful to the reader on the present occasion.

EUROPE.

Thames 1 Rhine 5-1/4 Danube 7 Wolga 9-1/2

ASIA.

Indus 6-3/4 Euphrates 8-1/2 Ganges 9-1/2 Burrampooter 9-1/2 Ava 9-1/2 Jennisca 10

ASIA CONTINUED.

Oby 10-1/2 Amoor 11 Lena 11-1/2 Hoanho (China) 13-1/2 Kian Keu 15-1/2

AFRICA.

Nile l2-1/2

AMERICA.

Mississipi 8 Amazon 15-3/4

It must be observed, however, that the _magnitude_ of a river depends much less upon the length of its course than upon the number of auxiliary streams which fall into it. It is this latter circ.u.mstance, which occasions the vast size of the Ganges, compared, for example, with the Nile; although the course of the latter is so much longer. Rivers not fed by auxiliary streams, may even become _smaller_ in consequence of the length of their course. The editor is indebted for these observations to Major Rennell.]

Before the editor finally dismisses the subject of the Congo, he may be allowed to express a hope that this distinguished river, which hitherto has been only known as one of the greatest marts of the Slave Trade, may at length be rendered conducive to objects of civilization and science; and that some use will now be made of this great inlet into Africa, for the purpose of exploring a part of that continent which as yet is entirely unknown; or, at least, of obtaining more complete and authentic information relative to the Congo itself, which must unquestionably be considered as a very curious and interesting subject of enquiry. Such an enterprise, according to the opinion of Mr. Maxwell, would not be attended with much difficulty. In a letter to Mr. Park, dated Oct. 12, 1804, alluding to the subject of the Congo, he speaks of an intention which he had formed some time prior to Park's discoveries, of exploring that river. His scheme was to carry out with him from England six supernumerary boats, well adapted for rowing and sailing; each being of such a size as to be easily carried by thirty people, and transported across several cataracts, with which the course of the river is known to be impeded. On his arrival at the coast, he meant to hire about thirty or forty black rowers, and to sail up the Congo with proper arms, provisions, and merchandize, in the month of May (the dry season south of the equator) calculating upon an absence from the coast of about ten weeks. Mr. Maxwell considered this scheme as perfectly practicable, and likely to be attended with no very great expense; but he was prevented from executing his intention by the war of 1793, which made it inconvenient and unsafe for him to enc.u.mber the deck of his vessel with supernumerary boats.

IV. The fourth and last opinion respecting the termination of the Niger, is that of a German geographer, M. Reichard, which was published in the 'Ephemerides Geographiques,' at Weimar, in August, 1808, and is referred to in a respectable French work, ent.i.tled, 'Precis de la Geographie Universelle, par M. Malte-brun.' The fourth volume of this work, which appeared at Paris in the year 1813, (p. 635) represents M. Reichard's hypothesis to be, that the Niger, after reaching w.a.n.gara, takes a direction towards the south, and being joined by other rivers from that part of Africa, makes a great turn from thence towards the south-west, and pursues its course till it approaches the north eastern extremity of the gulph of Guinea, when it divides and discharges itself by different channels into the Atlantic; after having formed a great Delta, of which the Rio del Rey const.i.tutes the eastern, and the Rio Formoso, or Benin River, the western branch.

Without entering into the details of M. Reichard's reasoning in support of this hypothesis, which is often somewhat hazardous and uncertain, it may be sufficient for the present purpose to observe, that his princ.i.p.al argument is founded on a consideration of the peculiar character belonging to the tract of country situated between the two rivers, which consists of a vast tract of low, level land, projecting considerably into the sea, and intersected by an infinity of small branches from the princ.i.p.al rivers. In these and other respects, it appears to bear a considerable resemblance, according to the best descriptions of that coast which we possess, to the Deltas at the mouths of the Nile, the Ganges, and such other great rivers, as by depositing large quant.i.ties of alluvial matter previous to their discharge into the sea, form gradual additions to the coast. For it may be proper in this place to remark, that the formation of Deltas, even by rivers of the first magnitude, is by no means universal; some of the greatest that are known being without them. Of this the Amazon, Plata, and Oronoko are mentioned by Major Rennell as distinguished instances; to which may now be added, the Congo.

The difference appears to be owing to the depth of the sea at the mouth of the rivers, and perhaps to other circ.u.mstances, which are not quite understood.

[Footnote: See Reunell's Geogr. System of Herodotus, 4to. p. 483.]

Both of the two rivers, enclosing the great alluvial tract which has been described (the Rio del Rey and the Formoso), are stated to be of considerable size, being each of them seven or eight miles broad at the mouth; and the supposed Delta, estimated by the line of coast, is much larger than that of the Ganges: consequently, the two streams, if united, must form a river of prodigious magnitude. But neither of the rivers has ever yet been explored; nor has the interior of the country, to any distance from the coast, been accurately described by any European traveller. Hence, the question whether the two rivers are ever really united, and whether the tract in question is a complete Delta or not, still remains to be ascertained. With regard also to the course, or even the existence, of the great river to which this Delta is said to belong, and which M. Reichard supposes to come from the northeast of Africa, there is no tradition nor any vestige among travellers or geographical writers; the whole is purely conjectural. But the supposition, so far at least as relates to the alluvial origin of the tract in question and the junction of the two rivers, has great appearance of probability.

On comparing Mr. Maxwell's hypothesis respecting the Niger with that of M. Reichard, which we are now considering, the latter may be said to have gained something in point of probability, by diminishing the distance which the Niger has to flow in order to reach the Atlantic. But the length of its course, even when thus reduced, is still a considerable difficulty, and a great inc.u.mbrance on the hypothesis. The objection arising from the Niger's being conceived to penetrate the Kong Mountains, seems to be nearly of equal weight in both cases, on the supposition that this vast chain of mountains is of the extent generally imagined; which there appears to be no reason to doubt.

It may be mentioned as an objection to both of these hypotheses, that no traces whatever of the Mahometan doctrines or inst.i.tutions are now to be found on either of the coasts where the Niger is supposed to terminate.

In no part of the world has the spirit of enterprise and proselytism, which properly belongs to the Mahometan character, been more strikingly displayed than in the extensive regions of North Africa. Its effects are every where conspicuous, not only in the religious belief of the greater part of the inhabitants; but even where Mahometism is not actually established, in their manners, and customs, and in the predominance of the Arabic language, which is almost every where grafted upon the native African dialects. These circ.u.mstances, however, are peculiar to North Africa; nothing of a similar kind having been remarked on the coast of Guinea, and still less on that of Congo and Angola. Mr. Maxwell also states in a letter to Mr. Park, that he had made enquiries of a great number of negroes who had come down the Congo from great distances; but that he could never hear of any Mahometan priests having visited the countries on the banks of that river. Supposing the Niger really to flow through the centre of Africa, and to discharge itself any where into the Atlantic, it is reasonable to believe that some of the Mahometan colonists must long since have established themselves on the banks of that river, and penetrated to the sh.o.r.es of the ocean.

APPENDIX. No. V.

The botanical specimens, mentioned in Park's letter, arrived safe in England, and were received by Sir Joseph Banks, by whose kind information the editor is enabled to add the following particulars concerning them.

1. _Fang Jani,_ or self-burning tree. The specimens received under this name, were branches of a species of _Panda.n.u.s,_ which, for want of the parts of fructification, could not be ascertained. The shoots and bases of the leaves were black and withered, resembling in appearance leaves and branches that had been subjected to the action of fire. The leaves, however, above their bases, were green, although dry. On a closer examination, those parts which appeared like charcoal, were found to differ entirely from that substance, as they would not give a black colour to paper when rubbed upon it. Besides, it was wholly incredible that the young shoots and bases of the leaves should break out into a blaze, while the tops of the leaves, far less succulent than the young shoots, remained quite free from fire, not being even singed in the smallest degree.

On a more careful examination, the black colour appeared to be occasioned by a disease in the plant, of the nature of the mildew or rust of corn, arising from a parasitic fungus, probably of the nature of the _Puccinia_ of Europe; the species of which could not be ascertained on account of the advanced state of growth of the specimen. This explanation accords very ill with the declarations of the negroes, who affirm, that they have often seen fires in the woods, occasioned by the spontaneous burning of these shrubs; but it is mentioned in Mr. Park's letter, 'that _few_ of the natives had seen it actually burning.'

2. _Kino._ The origin of this drug, long ago admitted into the Pharmacopoeias of Europe, was unknown, till Mr. Park sent a specimen of the plant from which the negroes collect it, which proves to be a species of _Pterocarpus_ not yet described by any botanical writer.

3. _Tribo_. As no part of the plant was sent except the root, nothing can be said concerning its species. It appeared to be a moderately good dye, but had no marked superiority over those already known, sufficient to induce Sir Joseph Banks to cause experiments to be made with it. Indeed, the quant.i.ty was not sufficient for any experiments, except on a very confined scale.

APPENDIX. No. VI.

The following particulars, tending to shew the increase which has taken place in the commerce between Great Britain and Africa since the Abolition of the Slave Trade, have been communicated to the editor by an intelligent friend, who has great knowledge and experience in the African trade, and upon whose accuracy and means of information he has the most perfect reliance.

It appeared from Custom-house returns, officially laid before Parliament, that the average annual value of all imports from Africa into Great Britain for twenty years prior to 1787, fell short of 72,000; and even this small sum included the imports, not only from the whole Western coast of Africa between Cape Negro in lat.i.tude 16 deg South and the straits of Gibraltar, but also from some parts bordering on the Mediterranean. The average annual value of these imports, during the last five years of that period, viz. 1783, 4, 5, 6 and 7, appears, from the same official returns, to have been about 90,500. If from this amount be deducted the value of the articles appearing to have been imported from Morocco and other adjoining countries, there will be left somewhat less than 70,000 for the value of all our imports from the Western Coast of Africa; that is, from the country lying between Cape Blanco, lat.i.tude 21 deg north, and Cape Negro, lat.i.tude 16 deg south, being an extent of 4500 miles of coast. The average annual exports from Great Britain to the Western coast of Africa during the same period (exclusive of the exports connected with the Slave Trade) may be estimated at a sum not materially exceeding 50,000.

The compiler of the present statement possesses no doc.u.ments or means of information, which enable him to shew what was the extent of the commerce of Great Britain with Africa (unconnected with the Slave Trade) during the period from 1788 to 1807, the year in which the Slave Trade was abolished; but there is good reason to believe that it had not materially increased within that time.

It might be impracticable at present, from the loss of the Custom-house books, to obtain any authentic account of exports and imports during the last seven years. But this defect of official information is in some degree supplied by an authentic statement, made out on a particular occasion by a Committee of the African Company, from accounts with which they were furnished from the Custom-house, through the intervention of Government. The object of the Company in obtaining these accounts was to procure authentic data relative to some public measure which was in agitation, connected with the African trade. The following statement was extracted from the books of the Company.

Imports from Africa into Great Britain.

1808. 374,306 1809. 383,926 1810. 535,577

[Sidenote: exclusive of gold dust, which is not subject to any custom-house entry]

Exports from Great Britain to Africa.

1808. 820,194 1809. 976,872 1810. 693,911

The great difference between the value of the exports and imports in this case was accounted for by an experienced officer of the African Company by supposing that a large proportion (from one third to a half) of the goods exported, was captured by the enemy. If this be the true explanation, the account must have been balanced by the exports of gold dust, and the bills of exchange drawn from the British settlements on the African coast. Another supposition (and perhaps a more probable one) is that a considerable part of the exports found their way into the hands of the contraband slave traders, and was employed in carrying on their illegal speculations.

But, even if we consider the imports alone, the increase in the commerce of Africa during the before mentioned period is altogether astonishing; so much so, as almost to induce a suspicion that there is some fallacy in the statement, although there does not appear to be any specific ground for questioning its correctness. For if to the amount of the imports as above stated, we add the value of the gold dust imported, we shall find that this additional commerce nearly fills up the chasm occasioned by the Abolition of the slave trade, extensively as that trade was carried on by this country.

But considering this statement only as a general proof of a great increase of the African trade, (without attempting to a.s.sign the proportion of increase) let us take another view of the same subject.