The inhabitants of particular places are peculiarly subject to particular diseases, owing to their manner of living, or to the air and effluvia of the earth and waters. Hoffman has made some curious observations on diseases of this kind. He remarks, that swellings of the throat have always been common to the inhabitants of mountainous countries: and the old Roman authors say, 'Who wonders at a swelled throat in the Alps?' The people of Switzerland, Carinthia, Stiria, the Hartz forest, Transylvania, and the inhabitants of Cronstadt, he observes, are all subject to this disease. The French are peculiarly troubled with fevers, worms, hydroceles, and sarco-celes; and all these disorders seem to be owing originally to their eating very large quantities of chestnuts. The people of Britain are affected with hoarsenesses, catarrhs, coughs, dysenteries, consumptions, and the scurvy; the women with the fluor albus; and children with a disease scarcely known elsewhere, which we call the rickets.

In different parts of Italy, different diseases reign. At Naples, the venereal disease is more common than in any other part of the world. At Venice, people are peculiarly subject to the bleeding piles. At Rome, tertian agues and lethargic distempers are most common; in Tuscany, the epilepsy; and in Apulia, burning fevers, pleurisies, and that sort of madness which is attributed to the bite of the tarantula, and fancied to be cured by music. In Spain, apoplexies are common, as also melancholy, hypochondriacal complaints, and bleeding piles. The Dutch are peculiarly subject to the scurvy, and to the stone in the kidneys. The people of Denmark, Norway, Sweden, Pomerania, and Livonia, are all terribly afflicted with the scurvy: and it is remarkable, that in Denmark, Sweden, and Norway, fevers are very common; but in Iceland, Lap-land, and Finland, there is scarcely ever such a disease met with. The Russians and Tartars are afflicted with ulcers, made by the cold, of the nature of what we call chilblains, but greatly worse; and in Poland and Lithuania, there reigns a peculiar disease, called the Plica Polonica, so terribly painful and offensive, that scarcely any thing can be thought worse. The people of Hungary are very subject to the gout and rheumatism: they are also more infested with lice and fleas than any other people in the world; and they have a peculiar disease which they call cremor. The Germans, in different parts of the empire, are subject to different reigning diseases. In Westphalia, they are peculiarly troubled with peripneumonies and the itch. In Silesia, Franconia, Austria, and other places thereabout, they are very liable to fevers of the burning kind, to bleedings at the nose, and other haemorrhages; and to the gout, inflammations, and consumptions. In Misnia they have purple fevers; and the children are peculiarly infested with worms. In Greece, Macedonia, and Thrace, there are very few diseases; but what they have are principally burning fevers and phrenzies. Anciently, the most common diseases in Egypt were blindness, ulcers in the legs, consumptions, and the leprosy, called elephantiasis, which was peculiar to that country; as Pliny observes, Egypti peculiare hoc malum elephantiasis. At Constantinople the plague always rages; and in the West Indian islands, malignant fevers, and the most terrible colics. These diseases are called endemic. In general, it is observed, that the colder the country is, the fewer and the less violent are the diseases.

Schoeffer tells us, that the Laplanders know no such thing as the plague, or fevers of the burning kind; nor are they subject to half the distempers we are. They are robust and strong, and live to eighty, ninety, and many of them to more than one hundred years; and at this great age they are not feeble and decrepit, but a man of ninety is able to work or travel as well as a man of sixty with us. They are subject, however, to some diseases, more than other nations. They* have often distempers of the eyes, owing to their living in smoke, or being blinded by snow. Pleurisies, inflammations of the lungs, and violent pains of the head, are also very frequently found among these hardy inhabitants of the north; and the small-pox rages with great violence. They have one general remedy against these and all other internal diseases; this is, the root ok that sort of moss which they call jerth. They make a decoction of this root in the whey of rein-deer's milk, and drink very large doses of it warm, to keep up a breathing sweat; if they cannot get this, they use the stalks of angelica boiled in the same manner: but the keeping in a sweat, and drinking plentifully of diluting liquors, may go a great way in the cure. They cure pleurisies by this method in a very few days, and get so well through the small-pox with it, that very few die of the disease.