I give this Table both as a convenient outline and in deference to the great name of Sydenham. But we should be much at fault in interpreting the figures of the London Bills, or the history of epidemic diseases in the country at large, if we had no other sources of information than his writings. Only some of the figures in the Table concern us in this chapter; plague has been finished in the previous volume, smallpox, measles and “griping in the guts” are reserved each for a separate chapter, as well as the influenzas and epidemic agues which formed the chief part of the “strange” or “new” fevers. If this work had been the Annals of Epidemics in Britain, it would have been at once proper and easy to follow Sydenham’s constitutions exactly, and to group under each year the information collected from all sources about all epidemic maladies. But as the work is a history, it proceeds, as other histories do, in sections, observing the chronological order and the mutual relations of epidemic types as far as possible; and in this section of it we have to cull out and reduce to order the facts relating to fevers, beginning with those of 1661.
Cases of fever, says Sydenham, began to be epidemic about the beginning of July 1661, being mostly tertians of a bad type, and became so frequent day by day that in August they were raging everywhere, and in many places made a great slaughter of people, whole families being seized. This was not an ordinary tertian intermittent; indeed no one but Sydenham calls it an intermittent at all, and he qualifies the intermittence as follows:
“Autumnal intermittents do not at once assume the genuine type, but in all respects so imitate continued fevers that unless you examine the two respectively with the closest scrutiny, they cannot be distinguished. But, when by degrees the impetus of the ‘constitution’ is repelled and its strength reined in, the fevers change into a regular type; and as autumn goes out, they openly confess themselves, by casting their slough (larva abjecta) to be the intermittents that they really were from the first, whether quartans or tertians. If we do not attend to this diligently” etc. And again, in a paragraph which does not occur in the earlier editions, he writes as follows in the context of the “Intermittent Fevers of the years 1661-1664:”
“It is also to be noted that in the beginning of intermittent fevers, especially those that are epidemic in autumn, it is not altogether easy to distinguish the type correctly within the first few days of their accession, since they arise at first with continued fever superadded. Nor is it always easy, unless you are intent upon it, to detect anything else than a slight remission of the disease, which, however, declines by degrees into a perfect intermission, with its type (third-day or fourth-day) corresponding fitly to the season of the year.”
The intermittent character of these fevers seems to have struck Sydenham himself in a later work as forced and unreal. Writing in 1680, when the same kind of fevers were prevalent, after the epidemic agues of 1678 and 1679, he calls them “depuratory,” and says that “doubtless those depuratory fevers which reigned in 1661-64 were as if the dregs of the intermittents which raged sometime before during a series of years,” i.e. the agues of 1657-59[18].
Theory or names apart, Sydenham’s account of the fatal epidemic fever of the summer and autumn of 1661, comes to nearly the same as Willis’s. Without saying expressly, as Willis does, that the victims were mostly children or young people, he speaks in one place of those of more mature years lying much longer in the fever, even to three months, and he specially mentions the same sequelae of the fever in children that Willis mentions, and that Roger North remembered in his own case—namely that they sometimes became hectic, with bellies distended and hard, and often acquired a cough and other consumptive symptoms, “which clearly put one in mind of rickets.” He refers also to pain and swelling of the tonsils and to difficulty of swallowing, which, if followed by hoarseness, hollow eyes, and the facies Hippocratica, portended speedy death. Among the numerous other accidentia of the fever, was a certain kind of mania. Among the symptoms were phrensy, and coma-vigil; diarrhœa occurred in some owing, as he thought, to the omission of an emetic at the outset; hiccup and bleeding at the nose were occasional.
But, although Sydenham must have had the same phenomena of fever before him that Willis had, the epidemic being general, according to the statements of both, one would hardly guess from his way of presenting the facts, that the fever was what Willis took it to be—a slow nervous fever, with convulsive and ataxic symptoms, specially affecting children and the young. Both Willis and Sydenham recognised something new in it; the common people called it, once more, the “new disease,” and Pepys calls it a “sort of fever,” and “strange and fatal fevers.”
As Sydenham maintains that the same epidemic constitution continued until 1664 (although the fever-deaths in London are much fewer in 1662-3-4 than in the year 1661, which was the first of it), we may take in the same connexion Pepys’s account of the Queen’s attack of fever in 1663. The young princess Katharine of Portugal, married to Charles II. in 1662, had the beginning of a fever at Whitehall about the middle of October, 1663; Pepys enters on the 19th that her pulse beat twenty to eleven of the king’s, that her head was shaved, and pigeons put to her feet, that extreme unction was given her (the priests so long about it that the doctors were angry). On the 20th he hears that the queen’s sickness is a spotted fever, that she was as full of the spots as a leopard: “which is very strange that it should be no more known, but perhaps it is not so.” On the 22nd the queen is worse, 23rd she slept, 24th she is in a good way to recovery, Sir Francis Prujean’s cordial having given her rest; on the 26th “the delirium in her head continues still; she talks idle, not by fits, but always, which in some lasts a week after so high a fever, in some more, and in some for ever.” On the 27th she still raves and talks, especially about her imagined children; on the 30th she continues “light-headed, but in hopes to recover.” On 7th December, she is pretty well, and goes out of her chamber to her little chapel in the house; on the 31st “the queen after a long and sore sickness is become well again.”
Typhus fever perennial in London.
Sydenham says that a continued fever, the symptoms of which so far as he gives them suggest typhus, was mixed with the masked intermittent, (or the convulsive fever of children, as in Willis’s account), in every one of the years 1661-4; and that statement raises a question which may be dealt with here once for all. Fever in the London bills is a steady item from year to year, seldom falling below a thousand deaths and in the year 1741, during a general epidemic of typhus, rising to 7500. The fevers were a composite group, as we have seen, and shall see more clearly. But the bulk of them perennially appears to have been typhus fever. Where the name of “spotted fever” is given there can be little doubt. Every year the bills have a small number of deaths from “spotted fever,” and the number of them always rises in the weekly bills in proportion to the increase of “fever” in general, sometimes reaching twenty in the week when the other fevers reach a hundred. It would be a mistake to suppose that only the fevers called spotted were typhus, the other and larger part being something else. The more reasonable supposition is that the name of spotted was given by the searchers in cases where the spots, or vibices or petechiae of typhus were especially notable. If a score, or a dozen or half-a-dozen deaths in a week are set down to spotted fever, it probably means that a large part of the remaining hundred, or seventy, or fifty cases of “fever” not called spotted were really of the same kind, namely typhus. In the plague itself, the “tokens,” which were of the same haemorrhagic nature as the larger or more defined spots of typhus, were exceedingly variable[19]. One of the synonyms of typhus (the common name in Germany) is spotted typhus; but the spots were of at least two kinds, a dusky mottling of the skin and more definite spots, sometimes large, sometimes like fleabites.