Eight things you never knew about paper, ink and writing · Deep Cuts

DC·34 Deep Cuts

For 1,400 years, ink slowly ate its own pages

Iron gall ink — the standard ink across Europe from Roman times into the 1800s — was brewed from oak galls, the marble-sized growths a tiny wasp triggers on oak twigs, mixed with iron salts. The reaction leaves it strongly acidic, around pH 1–3, and over centuries that acid attacks the cellulose in paper: browning it, making it brittle, and sometimes eating clean through the page. The damage is visible today in drawings by Leonardo da Vinci, the manuscripts of Bach and Victor Hugo, and early drafts of the U.S. Constitution.

Old 'sepia' drawings were inked with cuttlefish

The warm brown wash called 'sepia' isn't just a colour name — it's an animal. 'Sepia' is the cuttlefish's own genus, and the pigment was made from the dark, melanin-rich ink it squirts to escape predators. The dried ink sacs were boiled down into a brown drawing ink that grew hugely popular from the Renaissance on; the Romans wrote with it even earlier. It is so chemically stable that sepia drawings made centuries ago still hold their rich brown tone today.

Pure pencil 'lead' was guarded by armed men

There has never been any lead in a pencil — the core is graphite, a soft form of carbon long mistaken for a kind of lead and called 'black lead' or plumbago. The purest deposit ever found surfaced before 1565 at Borrowdale in northwest England, so pure it could be sawn into solid writing sticks. It was valuable enough to line moulds for cannonballs, so the mines were patrolled by armed guards and deliberately flooded between digs; after a raid in 1752, stealing it became a crime punishable by transportation to Australia.

Papyrus uses no glue — the plant binds itself

Egyptians made papyrus by peeling the green rind off the papyrus reed, slicing the soft inner pith into thin strips, and laying them in two crossed layers. Pounded and pressed while still damp, the strips fuse with no added glue — the plant's own sap and swelling cells lock the sheet together as it dries. And despite giving us the word 'paper,' papyrus technically isn't paper at all: real paper is made from fibres mashed to a pulp and re-formed, while papyrus keeps the plant's own structure intact.

A single old Bible could cost a whole herd

Parchment and its finest grade, vellum, aren't paper — they're animal skin. Calf, sheep and goat hides were soaked in lime, scraped clean of hair and flesh, stretched on a frame, and dried under tension into a smooth, pale writing surface. Because one skin yields only a few large leaves, a complete medieval Bible could swallow the hides of 200 or more animals — the 12th-century Winchester Bible used around 250 calfskins. Each great book was, quite literally, a herd.

Why South Asian scripts turned out so round

For more than two thousand years, much of South and Southeast Asia wrote on dried palm leaves, scratching the letters in with a metal stylus. A palm leaf splits easily along its lengthwise fibres, and a straight stroke cut across the grain can start a tear that runs the whole leaf. So scribes favoured curves over corners — and the looping, rounded shapes of scripts like Tamil, Telugu, Kannada, Malayalam, Sinhala and Burmese are widely thought to have been shaped by the very leaf they were carved on.

The Inca kept an empire's records in knots

The Inca ran an empire of millions with no writing — instead they recorded with the quipu, bundles of knotted cords. Numbers were stored as knots tied in a decimal place system: a figure-eight knot for one, a long knot wound several times for two through nine, and simple knots in higher positions for tens, hundreds and thousands. Cord colour, twist and position carried still more meaning. Census counts, tribute and storehouse tallies were all kept on string — and scholars are still learning to read them.

This ink is a solid stick you grind into being

East Asian ink doesn't come as a liquid — it comes as a hard stick. Soot, collected from burning pine wood or vegetable oil, is kneaded with animal glue, moulded, and dried into a solid block, often beautifully carved. To write, you drip a little water onto a stone inkstone and grind the stick against it, making fresh ink each time and controlling exactly how dark it runs. Sealed and kept dry, an inkstick lasts for generations, and well-aged sticks are especially prized by calligraphers.

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