Aulus Gellius was reading the historian Sisenna closely enough to notice three adverbs most readers could step over: celatim, vellicatim, and saltuatim. One described an ambush arranged secretly. Two others described the very thing Sisenna said he refused to do—write a summer’s events in pieces and jumps that would confuse his audience.
The vocabulary is a small window into historical craft. Sisenna did not present narrative order as a neutral container. Sequence was part of explanation. Events in Asia and Greece had to be written continuously because fragmentation could make a reader lose the shape of what happened. Gellius preserved the rare words; Sisenna’s sentence preserved a historian thinking about how records become understanding.
Close Reading Began with Three Unusual Endings
Gellius says he was reading Sisenna’s Histories diligently when a family of adverbs caught his attention. Two members were familiar: cursim, rapidly, and properatim, hastily. They required no illustration because ordinary readers already knew how they worked. The less common forms demanded examples.
That contrast shows his method. Gellius did not build a list merely to display rarity. He placed unusual words beside familiar relatives so their construction could be heard. The shared ending made them a group, but each carried a different motion: concealment, plucking into bits, or proceeding by leaps.
Ancient prose reached Gellius without a searchable corpus. To notice recurrence meant keeping words in memory as a scroll advanced. Diligent reading was therefore a practical tool. A rare adverb in one passage could illuminate another passage many columns away, especially when both belonged to a writer whose larger work no longer survives intact for us.

Celatim Put Concealment inside an Ambush
Sisenna used celatim in a military sentence: a commander arranged his men in ambush as secretly as he could. The adverb does more than repeat the idea of hiding. It attaches concealment to the act of deployment. Troops must move into place, hold their positions, and remain absent from the enemy’s understanding until the trap closes.
Gellius gives the quotation because a dictionary gloss alone would flatten it. “Secretly” is accurate, but the ambush supplies the mechanism. Concealment is not a mood. It is work performed while bodies and weapons are being arranged in terrain.
The sentence also demonstrates why historians needed compact modifiers. Battle narrative often has to track speed, position, intention, visibility, and result at once. A single adverb can tell the reader how an order was carried out while the verb carries the action forward.
Sisenna’s rare form therefore earns its place through precision. Gellius may have valued the antiquity or shape of the word, but the quoted scene shows it functioning under pressure.
Vellicatim Made History Feel Plucked Apart
The second quotation turns from soldiers to writing. Sisenna says he had recorded the events of one summer in Asia and Greece in continuous form. He did so to avoid writing vellicatim or saltuatim, piecemeal or in disconnected jumps, and thereby confusing his readers.
Vellicatim carries the sense of plucking or pulling in small pieces. Applied to history, it makes fragmentation tactile. A narrative can be picked apart until the relation among episodes becomes difficult to grasp. The problem is not that every short section is bad. It is that pieces presented without connective order ask the reader to reconstruct causation, timing, and consequence alone.
The image would have been especially sharp in a scroll culture. Readers could not instantly open several distant passages in adjacent windows. Moving backward and forward required physical handling and memory. A historian who scattered one campaign or season too widely imposed real friction.
Sisenna’s choice of “one summer” supplies a natural unit. Seasons organized campaigning, travel, harvests, assemblies, and communication. To keep that summer together was to preserve the tempo within which decisions answered one another.
Saltuatim Warned against Leaping over Connections
If vellicatim suggests pieces torn away, saltuatim suggests movement by leaps. The reader lands on one event and then another without being shown the ground between them. A leap can be exciting, but repeated leaps make sequence hard to trust.
Sisenna links this danger directly to confusion in the minds of his readers. That admission is unusually valuable. The historian accepts responsibility for the route an audience must follow. Confusion is not automatically evidence that the past was chaotic or that the reader was inattentive. Arrangement can create it.
Continuous form did not require pretending that history flowed smoothly. It meant presenting enough adjacency for disruption to be intelligible. A sudden reversal has force only if the reader understands the state that existed before it. A distant theatre matters only if the narrative explains why attention moved there.

A Grammar Note Preserved a Historian’s Editorial Rule
Gellius’s chapter is formally about adverbs, yet its quotations preserve an editorial principle. Historical prose should not merely collect true statements. It should arrange them so a reader can see relation without being misled by arbitrary breaks.
This does not make Sisenna a modern theorist of narrative. His concern is practical and attached to one season in his own work. That specificity is its strength. He tells us what he wrote, how he wrote it, and what readerly failure he intended to prevent.
Gellius, in turn, demonstrates a different form of selection. He removes two sentences from a much larger history because their words deserve attention. At first that may look like the piecemeal method Sisenna rejected. The purposes differ. Sisenna was ordering connected events; Gellius was building a notebook of discrete observations. One protects sequence inside a campaign. The other protects survivals that might otherwise disappear.
The two methods meet in their respect for the reader. Sisenna supplies continuity. Gellius supplies context around unusual language. Neither simply drops a fragment without explaining what work it performs.
Roman historical memory could depend on physical recording methods, as shown by the shorthand that caught Cato’s Senate speech. It could also depend on arrangement, the problem behind tablets that made state memory portable. Sisenna’s rare adverbs show the next stage: stored events still needed a shape that thought could follow.
That is the quiet importance of Gellius’s notice. Three endings lead from grammar to ambush, from ambush to sequence, and from sequence to the ethics of explanation. A historian can tell the truth in pieces and still leave the reader unable to understand what the pieces did together.
The wording also distinguishes chronology from mere accumulation. Putting one fact after another does not automatically create a continuous account. Continuity requires the writer to identify which events belong within the same frame and to supply the transitions that make their order meaningful. Sisenna chose a summer across Asia and Greece as that frame, joining geography through time.
His warning about confused minds implies an audience capable of judging the construction. Readers were not passive containers. They followed, remembered, anticipated, and noticed when a narrative jumped without support. A rare adverb could name the moment when the writer broke that cooperation.
Gellius’s preservation of both uncommon terms lets their images reinforce each other. One method pulls the fabric into separate tufts; the other leaps past the spaces that should connect them. Together they describe two failures that can produce the same result: a reader left with episodes but no route.
The chapter survives as a fragment about fragments, which gives it an unintended afterlife. Most of Sisenna’s continuous narrative is lost, while the sentence condemning disconnected treatment remains. Gellius could not control that outcome. He could at least record enough of the original setting—book, wording, season, regions, and stated purpose—for the surviving piece to keep its own connections.
Sources
- Aulus Gellius, Attic Nights, 12.15
- Sisenna, Histories, book 6, fragments cited by Gellius