Part 7 (2/2)
The inexhaustible fecundity of Africa holds out to Europeans strong excitements to enterprise and research; but in the pursuit, the diseases which prevail in this country should be well understood; and it would be highly expedient, in any plans of colonization, to attach a medical staff, as the natives have no idea of the art of surgery, except what arises from the knowledge they have of the properties of herbs, and the superst.i.tions attached to their fetis.h.i.+sm. In annexing this extraordinary country to the civilized world, and exploring its stores of wealth, a burning climate, and the diseases peculiar thereto, unite with the barbarism of its inhabitants in opposition to the European; but by a strict observance of necessary rules, and avoiding all kinds of excess, the formidable influence of the sun may be resisted, and the pernicious effects of exhalations, which arise from a humid, marshy, and woody country, may in a great degree be obviated; and I am sorry to say, that for want of proper precaution and through ignorance, fatal consequences more frequently occur, than from the unhealthiness of the climate.
The temperature from Cape Verde to Cape Palmas is extremely various from the vertical rays of the sun, the nature of the soil, and the face of the country.
In the months from November to March, by Fahrenheit's thermometer, it has been from 70 in the morning, to 90 at noon, in the shade; and nearly the same variation has been observed at the river of Sierra Leone; and in some places in the Foolah country it has been from 50 to 90
From July to October, the mean temperature in the river Gambia, by Fahrenheit, has been from 90 in the morning to 100 at noon in the shade, and during the same months at Sierra Leone from about 92 to 106; but a variety of local circ.u.mstances may give a greater or less degree of heat: this however may serve to give a general idea of the temperature of these countries. The island of Goree, for example, the island of Bance, and the bay of Sierra Leone, are more healthy, enjoying the cooling sea breezes, more than situations in the rivers more interior. The banks of all the rivers in Africa, which I have visited, are enclosed by impenetrable forests, marshes, and the closely combined mangrove tree, and it is but seldom that the land forms an uneven dry surface on their borders.
Instances however in the Sierra Leone, Rio Pongo, &c. occasionally occur, when the most picturesque scenery adorns the river.
From May to August, hurricanes or _tornados_, before described, prevail upon the Windward Coast, and this phenomenon is to be met with from Cape Verde to Cape Palmas. The months from November to March are remarkable for the prevalence of east and north-east winds. When these winds, which are called _harmatans_, set in, they are accompanied with a heavy atmosphere, and are of a dry and destructive nature. Every description of vegetation is blasted by their influence, and every object, animate and inanimate, feels their powerful effects; the skin is parched and dried, and every feature is shriveled and contracted. The most compact cabinet work will give way, the seams of flooring open, and the planks even bend. Furniture of every sort is distorted; in short, nothing escapes their dreadful power. The nights at this period are cool and refres.h.i.+ng.
The months of July, August, September, and October are rainy, from the equator to about the 20th degree of north lat.i.tude. Towards the equinoxial they begin earlier, and make their progress to windward, but the difference throughout the whole of the north tropic fluctuates little more or less than 15 or 20 days. When the rains commence, the earth, before parched up and consolidated into an impenetrable crust, by the powerful influence of the sun and a long period of drought, is immediately covered with vermin and reptiles of all sorts, creating a moving map of putrefaction. The natives ascribe to these many of their diseases; but a further cause may be added, namely, the great change from heat to cold, and the variations at this season.
The powerful influence of the sun, which at this period is almost vertical, quickly dissipates the clouds which obscure the sky, and produces an almost insupportable effect; but new clouds soon condense, and intercept the solar rays; a mitigating heat follows; the pores are compressed, and prespiration ceases. Variations succeeding so rapidly, are attended with the most serious effects, and the most fatal consequences. And, lastly, the noxious exhalations arising from the inaccessible forests and marshy swamps which abound in Africa, and from numerous animal and vegetable remains of the dry season, which cover the soil every where, are productive of putrid effluvia. These rains, or rather periodical torrents of water, which annually visit the tropics, invariably continue for about four months of the year, and during the other eight it rarely happens that one single drop falls; in some instances, however, periodical showers have happened in the dry season, but the effects of these are scarcely perceptible on vegetation; the consequence is, that the surface of the earth forms an impervious stratum or crust, which shuts up all exhalation.
When the rains cease, and the heat of the sun absorbs the evaporations from the earth, which have been so long concealed during the dry season, a most offensive and disgusting effluvia is produced, which then fastens upon the human system, and begets diseases that in a short time shew their effects with dreadful violence; and no period is more to be guarded against than when the rains cease, for the intense heat completely impregnates the atmosphere with animalculae and corrupted matter.
The princ.i.p.al complaints which attack Europeans are, malignant nervous fevers, which prevail throughout the rainy season, but they are expelled by the winds which blow in the month of December; from hence these _harmatans_ are considered healthy, but I have heard various opinions among medical men on this subject. Dr. Ballard (now no more), whose long residence at Bance Island, and in Africa, and whose intimate acquaintance with the diseases of these climates, peculiarly qualified him to decide upon the fact, was of opinion, most decidedly, that the _harmatan_ season was not the most healthy.
When this malignant fever takes place in all its virulence, its consequences are the most disastrous; the symptoms are violent and without gradation, and the blood is heated to an increased degree beyond what is experienced in Europe; the ninth day is generally decisive, and this is a crisis that requires the most vigilant attention and care over the patient.
I speak this from personal experience. In consequence of the fatigues I underwent in the Rio Pongo, and other rivers, and having been for several days and nights exposed to an open sea, and to torrents of rain upon land, I was seized with this dreadful disorder, although I had enjoyed an uninterrupted state of good health before, and on my arrival at the colony of Sierra Leone was unable to support myself on sh.o.r.e; and had it not been for the kind attention and skilful prescriptions of Dr. Robson of that colony, with the friendly offices of Captain Brown, I should, in all probability, at this stage have finished my travels and existence together.
Dysenteries frequently follow this fever, which are of a very fatal tendency, and sometimes the flux is unattended by fever. This disease is not uncommon in persons otherwise healthy, but it is productive of great debility, which requires a careful regimen; if it continues to a protracted period, its consequences are often fatal. In my own case, a dysentery followed the fever, and reduced me to a mere skeleton. The dry belly-ache is another dangerous disease, accompanied by general languor, a decrease of appet.i.te, a viscous expectoration, and fixed pain in the stomach. Opium is considered an efficacious medicine in this disease, and is administered with great perseverance, accompanied by frequent fomentations. An infusion of ginger drank in the morning has frequently good effects. Flannel a.s.sists excretion, and is found beneficial. _Tetanos_ is also another disease peculiar to Africa, and is a kind of spasm and convulsive contraction, for which opium is the usual remedy.
The Guinea worm is another disease among the natives, which is productive of tumours upon the body and limbs, productive of great pain, and is a contagious disease. This, however, is a subject without my province, and which has been ably treated upon by gentlemen, whose profession fully qualified them for the investigation. In addition to the many valuable treatises upon tropical diseases, from high authority, I would recommend Dr. Winterbottom's publication to the reader, as, embracing highly important local information upon the diseases of the Windward Coast.
I have only touched on those which have more immediately come within my personal observation. Too much care cannot be taken by Europeans in drinking, and even was.h.i.+ng in the waters of Africa, which should always undergo a filtering preparation, and I am persuaded that great circ.u.mspection should be used in this respect: these and other precautions, with a generous, but regular system of living, would no doubt tend to diminish the fatal tendency of diseases in Africa.
Without doubt, a series of professional observations and enquiry into the temperature and periodical variations of the climate of Africa, and its diseases, would be attended with the most important advantages to the science of physic, and might ultimately prove of incalculable consequence in preserving the valuable lives of our brave soldiers and sailors, exposed to all the ravages of tropical climates. Advantages that are well worth the attention of government, which would train up a body of physicians and surgeons, initiated into the mysteries of the diseases peculiar to those countries, which might tend to preserve a large portion of human beings of the utmost consequence and importance to the state; and it might form a part in the organization of colonial establishments, to attach thereto an inst.i.tution of this nature.
CHAPTER X.
_The Author visits the Isles de Loss.--Remarks on those Islands.--Touches at the River Scarcies.--Arrives at the Colony of Sierra Leone.--Embarks for the West Indies--Lands at the Colony of Demerory.--Some Observations on the Productions of that Colony, Berbice, and Essequibo, and on the Importance of Dutch Guiana to the United Kingdom, in a political and commercial View._
On the 4th of July, I rejoined the Minerva at the Palm Trees, and on the 5th we weighed and pa.s.sed the bar of the Rio Pongo, steering our course for the Isles de Loss; and on the 6th came to an anchor off Factory Island.
The Isles de Loss, in the Portuguese language meaning Islands of Idols, are so called from the idolatrous customs of the natives, and are seven in number; Tammara, Crawford's, Factory, Temba, White's, Goat, and Kid islands. Tammara is the largest, but very difficult of approach, and has few inhabitants; Crawford's has two factories for trade, belonging to gentlemen formerly in the service of the Sierra Leone Company; and Factory Island has an American establishment, conducted by a Mr. Fisk, These are the princ.i.p.al (the others being little more than barren rocks), and they abound in vegetation and natural productions. Squilly, or the sea onion, to which great medicinal qualities are ascribed, grows in great abundance in these islands, and might be procured in almost any quant.i.ty. Dr. Lewis, in the _Materia Medica_, or _Edinburgh Dispensary_, describes the peculiar qualities of this root.
The positions of these islands are excellent for trade, but exposed to the predatory excursions of the enemy, who have frequently pillaged the factories established in Crawford's Island.
On the 9th we again got under weigh, steering our course for the entrance into the river Scarcies. The night was attended by tremendous peals of thunder, lightning, and torrents of rain: we continued off and on until the 12th, when we arrived outside Mattacont Island, bearing E. by S. and the Isles de Loss in sight. At 2 P.M. I accompanied Captain Brown, with five hands, in the pinnace, with the intention of running into the Scarcies river. We sailed with a fresh breeze in expectation of gaining the entrance by the approach of night; but we were obliged to anchor in the open sea, amidst the most awful peals of thunder, while the whole heaven displayed nothing but vivid flashes of lightning. Amidst this tremendous scene, exposed to the mercy of the waves, with the prospect of being deluged by rain, we secured our little bark and ourselves, in the best manner our circ.u.mstances would admit, and committed ourselves to the all protecting care and disposal of Providence. The mantle of night was soon spread around us, the scene was grand and solemn, and we were at length hushed to rest by the jar of elements, and the murmurs of the ocean. We awoke to contemplate an azure sky, and the all-bountiful mercy of the Creator, in preserving us from such imminent danger, to pursue our destination through breakers, shoals, and sands.
At day-light, with a breeze from the land, we weighed, and steered our course S.S.E. for the Scarcies bar, but the wind s.h.i.+fting to the S.E. and the ebb tide running strong, we were nearly driven out of sight of land; we were therefore obliged again to anchor, and wait the change of tide.
Trusting to a sea breeze that had just set in, it being slack water, we again weighed: the serenity of the weather did not long continue, but soon increased to a brisk gale, accompanied by thunder, lightning and rain; we were driven with great impetuosity through the narrow channel between the bar and the sh.o.r.e, and from the shallowness of the water, the rollers continually broke over our heads, threatening our destruction every moment.
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