This chapter reads three acts on disease taken when no cause had been established: measures of cleansing and refusal of entry in Florence in 1348, a rule of one month's separation in Ragusa in 1377, and a written account of the plague at Athens in 430 BC, a case in which the codings did not settle whether the record shows a public act at all. Each act came first in its own record, and any proof of effect came later or never.
3.1Rosenberg's dramaturgy
A later reader lives in the last act. The actors in this chapter were inside the first. The order is what this chapter turns on: recognition precedes explanation, and explanation precedes any evidence that might support or withdraw it. Each of the three acts comes first in its own record, and any proof of cause or of effect comes later or does not come at all.
Rosenberg also distinguishes two explanatory styles, and which style is in play at the hour of an act matters for reading that act, because the two styles ask different things of a public body. In one, disease is read as configuration: an imbalance of the whole person and their environment. In the other it is read as contamination: a specific agent passing between people. This study reads a configuration reading as tending toward changing the surroundings, and a contamination reading as tending toward cutting the passage between people. This study reads Boccaccio's introduction to the Decameron as holding both styles at once: the plague may come from the celestial bodies or from divine wrath, and it is also spread by touch and by things touched. That is this study's reading of the text, not something Rosenberg's distinction settles. The two styles stand in Boccaccio's text in adjacent passages rather than in competition with each other, which is one reason the Florentine measures can be described in Skeptron's record as measures against disease while the grounds given for them stay outside the text.
The three acts here are a restriction of entry, a rule of separation, and a written description. The first two can be read as acts against passage between people; the third is an act on the record itself, and the purpose its author states is the subject of Section 3.4. On the ledger's cells for the twenty-three cases this study reads closely, the two codings agreed that a public act is shown in twenty-two of them and left the twenty-third unsettled, and that cell is the Athenian case. What the records show about the hour is therefore thinner than what the source texts show. Florence's record names measures and none of their effects; Ragusa's record names a month and a tally and no effects; the Athenian case leaves the act cell unsettled altogether. This chapter treats the description as an act on the evidence while saying where that reading is this study's own. A further count belongs to this hour and to the whole ledger: across all eighty-nine cases, "The ledger's numbers" gives zero cases whose record states a condition under which its own judgment would be revisited.
For the hour of a first act, the frame gives a reader one thing and withholds another. What it gives is the separation of times. Its recurring sentences keep announcement, decision, implementation and result apart, and keep the date of an event apart from the date of its document, its count or its official recognition, so that a reader can see which moment a record is speaking of before reading anything into it. The frame also carries, in every history case, a fifth question asking what would maintain or withdraw a comparison with a later matter, and each record's answer names observations: an explanation that holds in repeated observation and in independent causal investigation, and that is withdrawn where a difference is explained by a change in the measurement environment or by missing primary data. That is Skeptron's method, written into record after record with only names and dates changed, and it belongs to 2026 and to the studio that holds the cases. It is not a condition the officials of 1348, the Great Council of 1377 or Thucydides wrote down, and this study does not read it as one.
What the frame cannot give is the hour's contents. It does not say who sat in the room, what they had heard, what they weighed, or what they expected. The fourth question of every case checks a weekday by calendar arithmetic; it says nothing about any event and is not read here as evidence. What a later reader can hold from the records and the source texts together is the ordering — the measure or the description first, the knowledge later — and the length and place a rule fixes: one month at Ragusa, the year 430 BC for the plague at Athens. What the reader cannot hold is the deliberation. The frame is Skeptron's method and appears in record after record; it is not something these three acts show, and its repetitions are not findings of this study. Where a later work supplies the actors' own grounds, that material belongs to the later work, and Chapter 13 returns to Rosenberg beside this study's three times.
3.2Florence in 1348
The source text is Boccaccio's Introduction to the First Day of the Decameron, in J. M. Rigg's English translation, with the Italian from the edition transcribed at Italian Wikisource. It runs in a fixed order. The pestilence had its origin some years before in the East, and had propagated itself westward without respite. Then come the measures, and Boccaccio places them before the visible symptoms: "the cleansing of the city from many impurities by officials appointed for the purpose, the refusal of entrance to all sick folk, and the adoption of many precautions for the preservation of health;" and, beside these, the devout made "humble supplications addressed to God, and often repeated both in public procession and otherwise."
The Italian behind that first clause is "per lo quale fu da molte immondizie purgata la cittá da uficiali sopra ciò ordinati e vietato l'entrarvi dentro a ciascuno infermo e molti consigli dati a conservazione della sanitá". This study's English sense of it is: the city was cleansed of many impurities by officials appointed for the purpose, entry was forbidden to every sick person, and much counsel was given for the preservation of health. The Italian for the supplications, "né ancora umili supplicazioni non una volta ma molte ed in processioni ordinate ed in altre guise a Dio fatte dalle divote persone", gives this study's sense as: nor were humble supplications lacking, made to God not once but many times, in ordered processions and in other ways, by the devout.
Only after that does the text say that "towards the beginning of the spring of the said year the doleful effects of the pestilence began to be horribly apparent". The symptoms come next: tumours in the groin or the armpits, called gavoccioli by the common folk, then black or livid spots; almost all died within three days of their appearance. The physicians failed, and Boccaccio gives two reasons that he does not choose between: the disorder may have been of a nature to defy such treatment, or the physicians were at fault, being in ignorance of its source, and failed to apply the proper remedies. Unqualified men and women had begun to practise medicine without any tincture of science. Contagion follows in the text: intercourse conveyed it from the sick to the whole; touching the cloth of the sick seemed to carry it; Boccaccio adds an observation of his own eyes, two hogs that nosed a dead man's rags and fell down dead.
The citizens' own responses come in a fixed sequence. Some lived temperately and apart in houses where there were no sick. Others held the opposite: "niuna altra medicina essere contro alle pestilenze migliore né cosí buona come il fuggir loro davanti", which this study renders as that no other medicine against pestilences was better or so good as fleeing before them, and a multitude abandoned their city, their houses, their kinsfolk and their goods. Others kept a middle course, carrying flowers or fragrant herbs or spices to their noses. None of it availed: the sick were abandoned by kinsfolk and neighbours, servants were scarce and died with their gains, the lower and middle ranks sickened by thousands a day, and the dead were laid in great trenches tier upon tier without the old rites. The figure Boccaccio gives for the dead between March and the ensuing July is his own estimate in the narrator's voice, not a count.
Skeptron's record of this case keeps the measures and the epidemic in that order and states what the order cannot show:
Describes officials in charge of cleaning the city, the refusal of entry by the sick, and various measures taken to preserve health.
The independent effect of each measure cannot be derived from the mere ordering of preventive measures and the outbreak.
A scene from the texts. The officers appointed for the purpose work through the impurities of the city while the pestilence is still only known to be travelling west. Sick people who reach an entrance are refused. The devout carry processions through the public places, repeating prayers that are heard more than once. Citizens walk abroad with flowers and herbs raised to their noses, and families leave the walls for the country. What is waited for is not written in either text: no measure here carries a date for ending, and no body is named that could end it.
Read on the axes, the record and the source text together leave a narrow opening and a wide silence. Who decided: the ledger reads the decider as a team or organisation, which is what the source text allows, for it names officials appointed for the purpose and names no person, no office and no appointing body. At whose cost: the source text names the sick refused entry, the servants who died beside their wages, and those who perished in their houses by thousands a day; the ledger's close-read table leaves the field on whether the record names who bore the wait while the measures were in force unsettled between the two codings, and this study does not resolve it here. What is missing: a named decider, the date of each measure, the grounds given at the time, and any statement of what would end the measures. What would change the reading: the record's third answer keeps the causal interpretations of the time out of the record and states its own limit:
Not permissible. The causal interpretation of the time is to be retained only as a symbolic or interpretive frame.
A finding that a measure had an independent effect would change the reading; a causal interpretation of the time would not be admitted into it at all. That limit is Skeptron's own reading, set in 2026, not a condition the officials of 1348 wrote down.
3.3Ragusa's month apart
The record is Skeptron's case One-Month Quarantine Resolution of the Ragusa Great Council, dated 27 July 1377 · Great Council Original Date. The source it checked is a quotation from the 1377 quarantine resolution of the Dubrovnik Great Council, published as teaching material by the University of Ljubljana; the record does not supply the council's register or the full text of the resolution. What the record gives is a duration, a place, and a tally:
It stipulates staying one month in Merkan or the old city. The quotation records 33 votes in favor out of 47 present.
And what the record gives in its later answer is a limit on what that tally can carry:
The one month stated in the original record is maintained. It does not coincide with the later 40-day practice, and institutional enactment alone does not confirm any reduction in infection.
The history of the trentino and of Dubrovnik's health office is set out in full in Section 1.3. What that history does to this chapter's three cases is narrower than a summary. None of that is in this record, and the same silence runs through Florence, where officials are named for their work and no appointing body, no grounds and no end date accompany them. On Athens neither work bears at all; Thucydides's account carries no rule, and this study draws nothing from either work about it.
The record's quotation names Merkan or the old city. The history notes islands or Cavtat. This study gives both and does not reconcile them, because the record's source is a quotation of the resolution rather than the resolution itself.
Gensini and colleagues attach the absence of an incubation basis to the forty days. The record says nothing about what lay behind the thirty. What the resolution fixed was a number: one month, carried by a majority, thirty-three votes out of forty-seven present. The tally shows that a decision was taken; it does not show a calculation. No incubation theory is named anywhere in this record, and this study does not read the works to supply one for 1377; it reads only that the rule preceded any such theory, and leaves the month's own grounds open.
A scene from the texts. The Great Council meets in Dubrovnik on the council's own date. Before it lies the question of people arriving from places of plague: how long they must stay apart before they may enter the city. Members answer with their votes, and thirty-three of the forty-seven present are in favour. The rule fixes a month and names the place where the waiting happens. What is waited for after the vote is not in the record: no later report of illness, no lifting of the rule, and no statement of what would end it.
What a rule made before a theory asks of a later reader is the discipline of keeping three things apart. The first is the rule's date and its fixed length, which belong to 27 July 1377 and to one month. The second is the later practice, forty days, which belongs to a later habit and to the word quarantine, and which the record's own answer refuses to read backwards into the resolution: the one month stands. The third is any effect. The record is explicit that institutional enactment alone does not confirm any reduction in infection, so the reader is left with an act and a majority, and no count of the sick either before or after.
The record does ask what would maintain or withdraw a comparison with a later matter, and its answer names recovery tests, alternate routes and remaining shortfalls. This study reads that condition as Skeptron's comparative method, held in 2026 and written into record after record, not as anything the Great Council fixed in 1377. What the council's own record would have to carry, for a later reader to judge the rule in its own hour, is something different: the grounds spoken at the vote, the body that enforced the month, what the arrivals did while they waited, and any observation that could show whether the rule's effect differed from what would have happened anyway. Chapter 11 asks what such an observable condition would have to name for each kind of act in these records.
On the axes, the ledger reads the decider as an institution or state, which the Great Council plainly is; it reads the horizon as days to months, which the rule itself fixes; it reads reversal as unknown, because the record names no condition under which the month would end; and it reads the human place as a human deciding, which the vote shows. The study's own fields say more: the case shows a public act, of restriction of movement, taken before the cause was settled; the count in the record is qualified by its scope, since the tally is of those present; the case names no gap in time between the rule and its effect, because it supplies no effect at all. On whether the record names who bore the wait, and on what later finding would change the reading, the two codings divided and this study does not resolve them here. Among the twenty-three cases read closely, the codings read restriction of movement, work or assembly as the kind of act in five of them; this record is one of the five.
The ledger's own axis reads the bearer as those nearest the stoppage, and the history note supports that direction by naming the trade the commune had to balance against protection, though the record itself names no one. What is missing from the record: the grounds spoken at the vote, the body that later enforced the month, the islands or the old city as the record's own terms have it, and any observation of what happened to arrivals during that month. What a comparison of restrictions can draw from this record, and what it cannot, belongs to Chapter 7, which sets these measures beside the Ordinance of Labourers and beside Philadelphia in 1918.
3.4Thucydides writing for recognition
In the text the plague begins among the Athenians in the first days of summer of the second year of the war, not many days after the Peloponnesians sat down in Attica and laid waste the country. Thucydides states what he will not do: "All speculation as to its origin and its causes, if causes can be found adequate to produce so great a disturbance, I leave to other writers, whether lay or professional; for myself, I shall simply set down its nature, and explain the symptoms by which perhaps it may be recognized by the student, if it should ever break out again." He adds the basis of his own position: "This I can the better do, as I had the disease myself, and watched its operation in the case of others."
The Greek behind that purpose sentence is "ἐγὼ δὲ οἷόν τε ἐγίγνετο λέξω, καὶ ἀφ' ὧν ἄν τις σκοπῶν, εἴ ποτε καὶ αὖθις ἐπιπέσοι, μάλιστ' ἂν ἔχοι τι προειδὼς μὴ ἀγνοεῖν, ταῦτα δηλώσω αὐτός τε νοσήσας καὶ αὐτὸς ἰδὼν ἄλλους πάσχοντας", which this study renders in its own English as: but Thucydides shall set down what it was possible to make clear, and by which signs, if it should ever fall upon the city again, a man would most be able to have foreknowledge and not be ignorant; these things shall be made clear by one who had had the disease himself and had himself seen others suffer.
The account then records acts that were taken at Athens before any cause was known, and records their results in the same breath: "Neither were the physicians at first of any service, ignorant as they were of the proper way to treat it, but they died themselves the most thickly, as they visited the sick most often;" and no human art succeeded better, and supplications in the temples and divinations were equally futile until the disaster itself put a stop to them. The account also records the density: "An aggravation of the existing calamity was the influx from the country into the city, and this was especially felt by the new arrivals." New arrivals had no houses, were lodged in stifling cabins at the hot season, and the corpses lay in the sacred places and round the fountains. The record of this case keeps the testimony and its limit in view:
Writing that Thucydides too experienced the illness and observed other patients, the record notes the pattern so that similar situations can be recognized later.
A scene from the texts. A physician enters a house in which a sick person lies, and physicians die most thickly because they visited the sick most often. Attendants hesitate between visiting and abandoning the sick; those who had recovered nurse others, since the disease did not take the same person twice fatally. New arrivals from the country crowd into the city in the heat and die among the corpses at the fountains. Thucydides, recovered, watches the sick and writes down the signs, and the account waits for a reader who may meet the disease again.
The description is itself an act taken before any cause was known. It is not a decision by a public body, and this study says so plainly: the record's own codings differ on whether the case shows a public act, and both readings leave the cell unsettled. What the description does is act on the evidence. It fixes what future recognition would rest on, and it refuses the cause in advance by leaving that to others, physician or layman. Read on the axes, the case gives no count, names no gap in time between the plague and its description in the record's own field, and leaves unsettled both the bearer of the wait and what later finding would change the reading. The record's first answer keeps the dating of the event apart from the creation and publication of the source, and the confirmed scope it gives is the year 430 BC alone. So a later reader can hold the year of the plague apart from the year of its account, and the record supplies no date for the account. What is missing at the hour of the act is everything a public decision would carry: a body, a vote, a rule, a deadline. What is present is a purpose written into the text itself, which is rare in this book's cases and is treated again in Chapter 9 beside other records written for later readers. What later investigators made of the symptoms is Chapter 4's subject; this chapter keeps to the hour.
3.5The debate over contagion, liberty and trade
The second literature of this study concerns the state and quarantine, and it carries a dispute inside it. One side holds that medical opinion in the nineteenth century was organised by politics rather than by evidence; the other holds that a state's choice of measure followed its position in the world rather than its politics. Both sides write about periods later than this chapter's two acts, and both are set out here because any later reader of Ragusa and Florence will meet them before arriving at those acts.
Erwin H. Ackerknecht, in Anticontagionism between 1821 and 1867 (1948), argued that the anticontagionism which dominated medical opinion in the middle of the nineteenth century was tied to liberalism and to commercial interests opposed to quarantine, which restrained trade and individual liberty, while contagionism and quarantine went with bureaucratic, Ackerknecht adds, in the same note, that the scientific case was not settled when these positions were taken. The thesis is thus about the alignment of positions rather than about the disease: a position on quarantine could serve an interest without being produced by it, and the timing of the two is not fixed by the argument.
Peter Baldwin, in Contagion and the State in Europe, 1830–1930 (1999), answers with a different variable. Against the view that liberal states preferred sanitation and authoritarian ones quarantine, Baldwin argues that a state's strategy followed above all its geographical and epidemiological position, its trade and its administrative capacity; Britain's English system of notification, isolation and disinfection replaced quarantine at the ports. Where Ackerknecht reads the politics of a doctrine, Baldwin reads the circumstances of a state. Neither reading is a claim about the disease itself, and neither supplies a date at which the choice was made.
Two further works carry commerce into the picture rather than leaving it inside a doctrine. Both works describe the century after the acts in this chapter, and their notes supply no bridge from their period back to 1348 or 1377.
Where do this chapter's two municipal acts bear on that debate? In one direction they bear on it squarely. Ragusa's Great Council in 1377 chose separation of one month for arrivals from plague regions, a measure whose grounds the record does not give; what the record holds is a duration, a place and a tally:
It stipulates staying one month in Merkan or the old city. The quotation records 33 votes in favor out of 47 present.
This study reads Boccaccio's text as still offering celestial bodies and divine wrath among the possible causes while Florence's officials refused entry to the sick and cleansed the city; the acts therefore stand as practices that preceded theory. In this study's own fields, read by the two codings, both cases show a public act of restriction of movement, taken before the cause was settled, and the Ragusa count is qualified by its scope, since it counts those present. If a later reader wants to ask whether a commercial city could impose a rule on its trade, Blažina Tomić and Blažina's note supplies one answer for the period the book covers, 1377–1533, in which the commune balanced protection against its trade.
In the other direction these two records cannot carry the debate at all. Ackerknecht's thesis concerns positions taken when the scientific case was contested, and these acts are from 1348 and 1377, four and five centuries earlier; his note fixes the contested period as 1821 to 1867, so no statement of his reaches back to either city. Baldwin's answer concerns states' geography, trade and administrative capacity; the Ragusa record gives a vote and a duration and says nothing of capacity, and the Florence record names officials appointed for the purpose and gives no argument. Neither work can be tested by one decision each, and the two codings read the Ragusa decider as an institution or state and the Florence decider as a team or organisation, both readings drawn from the setting rather than from any named body. What the records leave out is the deliberation: the tally of 33 out of 47 present shows that members were divided and shows nothing of what they said; the Florence record has no vote, no body and no name. Neither record mentions a merchant's interest, a trade embargo, or a liberty of movement as such. Harrison's and Huber's commerce readings ask what a rule did to trade and what trade did to a rule; these records answer neither, because they carry no count of arrivals, no account of trade interrupted, and no statement of any restriction on movement beyond the month itself.
So this study reads the bearing as limited: the cases show that separation can precede theory, and they cannot show whether liberty, trade or administrative capacity drove the choice. What a later reader can hold apart is the date of the act — 27 July 1377 for the rule, and the Florentine measures placed in the text before the visible symptoms — from any evidence of effect, which neither record supplies. What a later reader cannot recover is the hour of the argument itself, and no later work in this study's set reconstructs it for these two cases. The question of what such rules cost the people who bear them is Chapter 6's, and it returns there with Slack, Baldwin, Foucault and Richards.
3.6The debate over precaution
The fourth literature of this study turns on what to do while evidence is absent, and it carries its own dispute. The two positions are held by Cass R. Sunstein, in Laws of Fear: Beyond the Precautionary Principle (2005), and by Poul Harremoës and the editors of Late Lessons from Early Warnings: The Precautionary Principle 1896–2000 (2001), prepared for the European Environment Agency. One side asks what a decision costs when it is taken; the other asks what it costs when it is not taken in time. Both are written about policy choices under uncertainty, and both are set out here because a later reader of three acts from 430 BC, 1348 and 1377 will meet these questions before arriving at the records.
What would each reading make of this chapter's three acts? Sunstein's questions are cost questions: what did each act give up, what did it foreclose, what risks did it create on the other side. The records give almost nothing for those questions. Florence's record names measures and no cost; Boccaccio's text gives consequences for the sick, the servants and the buriers, and describes flight as an alternative that a multitude took, which is a cost the act's authors did not bear alone. Ragusa's record gives a month and a majority, and the history note names the trade the city later balanced against protection. Athens's case has no restriction at all, and a different risk sits in it: that a later reader will take the symptoms as an identification.
The Late Lessons question is different: what warning had arrived before the act, and who discounted it. Here the records carry partial material and no more. In Boccaccio's text the pestilence is already moving from the East toward the West when the Florentine measures are taken, so an indication existed that the disease was travelling; the measures were taken while it was still somewhere else. In Ragusa's resolution the rule speaks of people coming from places of plague, which presupposes plague somewhere, though the record does not say whether plague had reached Ragusa itself. In Thucydides's account there is no earlier record to consult: the plague arrives after the invasion and is recorded after the fact. What none of the three records carries is monitoring, a threshold, a named warning signal, or a report that anyone had discounted. Chapter 2's account of the ledger, and Chapter 12's verdicts, show how rare such material is across all eighty-nine cases. The ledger's own count of conditions for revisiting a judgment stands at 0 of the 89 cases, which is the nearest thing its fields hold to a condition written down in advance; it counts conditions for revisiting a judgment, not warnings, and this study does not read it as a count of any city's knowledge.
The Ragusa record carries one further line that both readings need and neither has. Its answer fixes the rule and sets its own limit:
The one month stated in the original record is maintained. It does not coincide with the later 40-day practice, and institutional enactment alone does not confirm any reduction in infection.
The work of Gensini and colleagues reaches the later practice rather than the resolution of 27 July 1377, and this study reads it as bearing on the shape of the rule that both precaution readings would examine: a fixed length chosen without any observable condition attached to it. The record itself supplies the same point from the other direction, for it says that enactment alone confirms no reduction in infection, so the length stands apart from any result anyone could watch.
Both readings need what the records do not contain: the actors' own grounds. The Ragusa record gives a tally and no argument. The Florence record gives appointed officials and no deliberation, no minutes and no naming of the appointing body. The Athenian account describes physicians and temple supplications by their results and records no public body's decision at all. For that reason neither the cost-benefit question nor the early-warning question can be answered inside these records, and this chapter does not answer them.
One place where the precaution lens fits badly should be said plainly. Sunstein and the Late Lessons editors both write about policy choices under uncertainty. Thucydides's case is not a policy choice: it is a historian's purpose of setting symptoms down so that they may be recognised, written after the event, with the cause deliberately left to others. Reading it as a decision under uncertainty would make it into something it is not. Its place in this chapter is to show that an act on the evidence can be taken when no cause is known, which is the chapter's subject, and not that a public body weighed risks.
What the three acts of this chapter establish, in their own terms, is the ordering: the measure or the description comes first, and any knowledge of cause or of effect comes later or does not come at all. The records show the ordering, and Chapter 2 explains how the frame keeps it visible. They do not show what the actors weighed, and where a later work supplies that material it belongs to the later work. The second time — the evidence — is Chapter 4's: what came afterwards to support or withdraw an act, and how a later reader keeps that evidence apart from the hour the act was taken.