Pliny, Epistulae 10.37 and 10.90 — The Aqueduct Letters: Engineering an Empire by Mail

(a) Where you are

The last new Pliny content on your syllabus — and the most concrete. Two water-supply reports from Bithynia: Nicomedia (10.37), which has burned through a fortune on two abandoned aqueducts, and Sinope (10.90), which needs water brought sixteen miles across one questionable stretch of ground. Here Pliny's prose does civil engineering: sums, materials, surveying, and the careful allocation of blame. These letters pair naturally with 10.5–7 (L19) — same register, different genre of request: there he asked favor; here he asks resources and expertise. The exam mines them for gerundives (L7 trained you), impersonal constructions, and the rhetoric of administrative tact.

(b) The Latin

Ep. 10.37 (Nicomedia — the money pit):

In aquae ductum, domine, Nicomedenses impenderunt HS XXX CCCXVIII, qui imperfectus adhuc omissus, destructus etiam est; rursus in alium ductum erogata sunt CC. Hoc quoque relicto novo impendio est opus, ut aquam habeant, qui tantam pecuniam male perdiderunt. Ipse perveni ad fontem purissimum, ex quo videtur aqua debere perduci, sicut initio temptatum erat, arcuato opere, ne tantum ad plana civitatis et humilia perveniat. Manent adhuc paucissimi arcus: possunt et erigi quidam lapide quadrato, qui ex superiore opere detractus est; aliqua pars, ut mihi videtur, testaceo opere agenda erit, id enim et facilius et vilius. Sed in primis necessarium est mitti a te vel aquilegem vel architectum, ne rursus eveniat quod accidit. Ego illud unum affirmo, et utilitatem operis et pulchritudinem saeculo tuo esse dignissimam.

Ep. 10.90 (Sinope — the soft ground):

Sinopenses, domine, aqua deficiuntur; quae videtur et bona et copiosa ab sexto decimo miliario posse perduci. Est tamen statim ab capite paulo amplius passus mille locus suspectus et mollis, quem ego interim explorari modico impendio iussi, an recipere et sustinere opus possit. Pecunia curantibus nobis contracta non deerit, si tu, domine, hoc genus operis et salubritati et amoenitati valde sitientis coloniae indulseris.

Context box — Trajan's replies (NOT on the syllabus; read for the conversation): To 10.37, Trajan orders the water delivered but adds a sting: investigate quorum vitio — "by whose fault" — the Nicomedians wasted so much, ne, dum inter se gratificantur — "lest, while doing each other favors," they keep starting and abandoning aqueducts; report the findings (10.38). To 10.90, he opens Ut coepisti, Secunde carissime — "as you've begun, dearest Secundus" — approves the survey, and notes the work will serve the colony's health and pleasure if its own resources can manage it (10.91).

(c) Vocabulary (16)

(d) Reading notes (by letter)

10.37: The audit leads: Nicomedia spent 3,318,000 sesterces on aqueduct #1 — imperfectus, omissus, destructus (unfinished, abandoned, even demolished — the asyndetic triple is a project post-mortem in three participles) — then 2,000,000 more on #2, also abandoned. The verdict-sentence is built to sting politely: Hoc quoque relicto novo impendio est opus, ut aquam habeant, qui tantam pecuniam male perdiderunt — "after wasting this too, NEW expense is needed so that people who have squandered so much money may (finally) have water" — the relative clause (qui … perdiderunt) files the blame against the locals, while the main clause keeps the goal (water) unsentimental. Then the engineer's eye: he went himself (Ipse perveni) to a fons purissimus; the water videtur debere perduci — personal passive (L4) + gerundive flavor: "seems to need conducting" — arcuato opere, on arches, as originally attempted — purpose-negative ne tantum ad plana … perveniat: on the flats alone, gravity-fed flow reaches only the low town. Salvage assessment: a very few arches survive; some can be re-erected from the dressed stone (lapide quadrato) pulled from the earlier work — reuse before purchase; the rest testaceo opere agenda erit (your L7 flagship gerundive) — brick: facilius et vilius. The ask: send a specialist — vel aquilegem vel architectum — with the bluntest purpose clause in Book 10: ne rursus eveniat quod accidit — "so that what happened doesn't happen again." And the closing flourish, calibrated to its reader: utilitatem … et pulchritudinem saeculo tuo esse dignissimam — the work's usefulness AND beauty are "most worthy of your age" — infrastructure as imperial monument; the budget request ends as a compliment. 10.90: The miniature version — one problem, one test, one conditional. Sinopenses aqua deficiuntur — passive of deficio: the Sinopeans "are failed by water" (the city as patient). Source identified 16 miles out, bona et copiosa — quality and quantity, both certified. The risk: just over a mile from the springhead (statim ab capite — engineering precision), ground suspectus et mollis — suspect and soft. The prudent move you saw in L7: explorari modico impendio iussi — a cheap geotechnical survey already ordered, with the indirect question an recipere et sustinere opus possit — can the ground take the structure? Then the money-sentence, a model of administrated optimism: Pecunia curantibus nobis contracta non deerit — "with us managing (abl. abs.), the money, (once) raised, will not fail" — IF (si … indulseris, future perfect: politeness in tense-form) the emperor smiles on a work serving salubritati et amoenitati — health and delight — valde sitientis coloniae — of a very thirsty colony. The adjective does the begging so Pliny doesn't have to.

(e) Comprehension + summary (skill 1.C)

1. Total the Nicomedia damage (both sums) and state the status of each project in the letter's own participles. What is Pliny careful to establish BEFORE proposing new spending? 2. Why arches at all? (What does ne tantum ad plana civitatis et humilia perveniat tell you about Roman water physics and city topography?) 3. Itemize Pliny's three-tier materials plan and its logic. 4. What exactly does ne rursus eveniat quod accidit ask for, and what does its bluntness tell you about where Pliny thinks the failure lies? 5. In 10.90, what has Pliny already done before asking, and what does that pattern (visible in 10.37's Ipse perveni too) tell Trajan about his governor? 6. Compare the two closings (saeculo tuo dignissimam / valde sitientis coloniae). Each aims at a different imperial motivation — name them. 7. Context box: what does Trajan's 10.38 add that Pliny's letter avoided saying, and what does Secunde carissime (10.91) reveal about the relationship? 8. One-sentence summary of each letter.

(f) Translation workout (Q2 format)

Est tamen statim ab capite paulo amplius passus mille locus suspectus et mollis, quem ego interim explorari modico impendio iussi, an recipere et sustinere opus possit.

(≈7 segments. Watch: statim ab capite; paulo amplius passus mille — accusative of extent; explorari passive infinitive under iussi; the appended indirect question an…possit.)

(g) Style sheet

• Numbers as rhetoric: HS 3,318,000 + 2,000,000 — the sums open the letter because they ARE the argument; no adjective could indict the locals like their own arithmetic.
• Participial post-mortem: imperfectus, omissus, destructus — a project's life cycle in three words, asyndeton as autopsy.
• Blame by relative clause: qui tantam pecuniam male perdiderunt — responsibility assigned grammatically to "those who," never to named men. Compare Trajan's reply, which demands names (quorum vitio): the governor files charges in syntax; the emperor wants them in a list.
• The conditional compliment: si … indulseris (future perfect) + saeculo tuo — requests dressed as opportunities for imperial glory. Book 10's signature move.
• Specialist vocabulary as competence-display: aquilex, arcuato opere, lapis quadratus, testaceum opus — the governor speaks engineer fluently; the lexicon itself reassures the reader holding the budget.

(h) Analysis (Q3 reps)

A. "In the aqueduct letters, Pliny's real product is not water but trust." Defend with three Latin details across both letters (a verified fact, a cost-control, a pre-empted failure). B. Use 10.37/90 + the context replies to characterize the Trajan–Pliny working relationship in one paragraph: who initiates, who verifies, who suspects, who pays — and which single word in 10.91 complicates the pure-bureaucracy reading?