A factor's account of tea sorting and pricing at Calcutta?

A factor's account of tea sorting and pricing at Calcutta is a merchant record held in the Guildhall Mercantile Archive, documenting the daily work of tea grading, valuation, and storage at the port of Calcutta during the opening decades of the eighteenth century. The author, whose name does not survive in the archival record, worked as a commercial factor—an agent authorized to buy, grade, and price goods on behalf of the Honourable East India Company—at a moment when tea had only recently become the dominant stimulant of Northern European trade.

The document runs to approximately eighty folios and covers the period from 1708 to 1712. It consists of daily notations of leaf weights, visual and olfactory assessments of dried tea, comparative prices for different grades, and notes on warehouse conditions, damage from moisture and insect activity, and seasonal fluctuations in supply. The hand is clear and practised, suggesting a clerk trained to bureaucratic precision rather than a merchant of great rank.

The factor's chief work was distinguishing grades of tea for sale to trading companies operating along the Atlantic coast. Tea arrived at Calcutta from highland regions in Assam and Bengal already dried and compressed into cakes, but quality was uneven. The factor would sample each batch, breaking open cakes to examine leaf color and consistency. The finest grades showed even green coloration and did not crumble into dust; he notes paying premiums for leaf that retained its wholeness and for batches that produced a clear, pale liquor when brewed. Lower grades commanded lower prices, though the factor observed that even damaged or broken leaf sold readily in Europe, suggesting that supply could not yet meet demand.

The account reveals the commercial uncertainty of the early tea trade. Prices per pound fluctuated sharply week to week, sometimes doubling or halving as new shipments arrived or as word of competing imports filtered back from London. The factor repeatedly notes the absence of a stable standard—different buyers wanted different characteristics, and European merchants had not yet settled on what constituted premium leaf. One entry from 1710 records a batch rejected by one buyer as too dark, then immediately purchased by another at a higher price. The factor remarks that the trade "yet wants judgment in the consuming ports."

Storage presented constant hazards. Calcutta's climate was warm and humid, and tea leaves absorbed moisture readily. The factor's entries catalogue losses to mildew, the depredations of insects, and the brittleness of leaf stored too long in poor conditions. He experiments with different warehouse placements, noting that teas kept in upper rooms with ventilation fared better than those stored near ground level. One extended entry documents his attempt to segregate damaged tea into a separate holding area to prevent contamination of undamaged stock—a practice he acknowledges as novel, suggesting that formal quality-control methods were still developing.

The document also records the social texture of the trade. The factor notes visits from competing merchants, the arrival of new factors from England, negotiations with local suppliers, and—several times—disputes with warehouse staff over reported losses. His language toward Indian workers and suppliers is curt and transactional, indistinguishable from the prose of European merchants of the period, though he does record instances of collaborative problem-solving with experienced local handlers who understood the temperamental character of stored leaf.

Scholars have mined this account primarily for its quantitative data. The volume of tea passing through Calcutta in these years—roughly three thousand to four thousand pounds per shipment, with shipments arriving every two to four months—provides rare precise numbers from an era when East India Company records were closely guarded. The price notations have been used to reconstruct the early structure of the tea market, though historians disagree on how representative a single factor's prices were across the broader trade. One authority argues that the factor's prices track East India Company policy closely; another contends that they reflect local conditions and personal negotiations that would not have applied uniformly across factors working for different trading interests.

The account ends abruptly in late 1712 without explanation. No subsequent pages survive, and the factor's name is not recorded in surviving company rolls. Whether he departed, died in the tropical climate, or simply ceased keeping records cannot be determined from the document itself. The cessation has led some scholars to speculate about occupational hazard and turnover among factors in the early colonial period, though the archive contains no corroborating evidence either way.

The account is valuable precisely because it describes ordinary labor—the repetitive daily work of assessing and warehousing a commodity—at a moment when that commodity had only begun its transformation into a global necessity. It records a world where tea quality was still uncertain and standardization had not yet imposed itself, where European merchants were still learning what they wanted and how to get it.