The States of Gelre chartered the Guelders Academy in 1648, the same year the Peace of Westphalia ended the Eighty Years' War and recognized the Dutch Republic as a sovereign nation. Leiden had been first, founded in 1575 as a reward to a city that had survived a Spanish siege on rotted herring. Then came Franeker, Groningen, Utrecht - and now Harderwijk, on the Zuiderzee coast, in a town that had once been a Hanseatic herring port and was looking for a future. The university was deliberately small. The charter capped enrollment, and in practice it rarely exceeded 150 students in a year. That smallness, it would turn out, was a feature, not a bug.

Harderwijk did one thing well: it processed candidates. Its fees were the lowest in the Republic. Its examinations were rigorous in form but compressed in time. If you arrived with a thesis already drafted, you could be examined within days. This made it the natural destination for Swedes, Hungarians, Germans, and Britons who could not legally take a doctorate at home. Lutheran Sweden barred its citizens from medical doctorates; Hungary had no university of its own; Catholic countries kept Protestants out of their faculties. Harderwijk did not care. Pay, defend, pass, leave. The town joked that the university handed out degrees like fish - one local rhyme ran, in rough translation, that Harderwijk was a town where cows and degrees both grew. The diplomas were perfectly legal. They were also, very often, going to people who would change Europe.

Linnaeus was twenty-eight and broke. He had a fiancee in Falun whose father had set a condition: get the doctorate, then we will talk. He had drafted his fever thesis at Uppsala, walked it across the Baltic, and made for the cheapest, fastest faculty he could find. The Harderwijk records show him arriving in mid-May 1735, submitting his thesis, defending it before the medical professors, and receiving his degree before the end of the month. A small tower in modern Harderwijk - the Linnaeustorentje - marks where he is said to have lodged. From Harderwijk he went to Leiden, where Herman Boerhaave (himself a Harderwijk alumnus from 1693) introduced him to the wealthy patrons who funded the publication of Systema Naturae. Within a year the framework that still organizes every species on Earth was in print. The doctorate that made the rest possible took him about as long as it takes to brew a batch of Dutch gin.

Pull the graduate register, and the names keep arriving. Jacob Roggeveen, who would stumble onto Easter Island at the age of sixty-three in 1722, graduated in 1690. Herman Boerhaave, the physician whose bedside teaching method became the template for clinical medicine across Europe, graduated in 1693. Romeyn de Hooghe, the etcher whose propaganda prints helped sell William of Orange to the English, took a degree in 1689. Herman Willem Daendels, the Patriot revolutionary who would later govern Java for Napoleon and ram a thousand-kilometer post road across it, graduated in 1783. For a school that almost no one in Europe had heard of, Harderwijk produced an astonishing density of people who left visible dents in the world.

Then Napoleon arrived. The French annexed the Netherlands in 1810, and in 1811 the French administration shuttered Harderwijk along with most of the smaller Dutch universities, consolidating instruction at Leiden, Groningen, and Utrecht. After Waterloo, King William I tried to revive the Guelders Academy. He failed - the town was small, the faculty had scattered, and the Republic that had given Harderwijk its quiet niche no longer existed. The university survives now as a tower, a few buildings, a Linnaeus statue, and a strange kind of immortality. Every time a botanist writes Homo sapiens or Quercus robur, they are using a system whose author paid a Harderwijk pedel a small fee in 1735 and walked out with a degree.