Before 1765 there was no medical school in the American colonies. A young man who wanted to be a physician read with an established practitioner for three or four years, watched what he did, ground his powders, and then set up on his own. The ambitious crossed the Atlantic. They went to Edinburgh, where Alexander Monro taught anatomy and William Cullen taught the theory and practice of physic to the largest medical class in Europe, or to London for the hospitals and the dissecting rooms, and came home with a degree that almost nobody else in America had.
What they were taught descended from one man. Hermann Boerhaave, who taught at Leiden in Holland until his death in 1738, had compressed the whole of medicine into about fifteen hundred numbered aphorisms so that a student could carry the system in his head. Boerhaave taught the men who founded the Edinburgh school; Edinburgh taught the Americans. The line runs Leiden, Edinburgh, Philadelphia, and this room begins with two books that can be placed exactly on it: John Redman's own copies of Boerhaave, one bought in Edinburgh in 1746, signed and dated by him.
Redman came home to Philadelphia in 1751 and became the most influential teacher of his generation, taking pupils into his shop in the old way. John Morgan read with him, went to Edinburgh, and came back in 1765 with a plan, which he delivered as a public address to the trustees of the College of Philadelphia. The first medical school in the colonies opened that autumn. Benjamin Rush, who had also served his apprenticeship with Redman, sailed for Edinburgh a few weeks later, took his degree under Cullen in 1768, and returned in 1769 to the chair of chemistry, the first in America.
Rush sailed with a letter of introduction from Franklin to William Cullen, the most eminent physician in Britain. Franklin was sixty and the most famous American alive; Rush was twenty-one, with talent, ambition and no connections. The letter was everything. It has never been located, and everything in this collection is its consequence. Rush wrote afterwards that he "owed more to Dr. Cullen than to any other teacher."
He taught for forty-four years, and something over three thousand students passed through his lectures. What he taught them was Cullen's system pushed a good deal further than Cullen would have gone: that disease came down to one cause, excessive action in the blood vessels, and that the cure was to reduce it by bleeding and purging. His lecture tickets, his printed syllabus, his students' notebooks and the theses they wrote under him are the everyday equipment of that education, and they are what this room is made of.
He came home as Cullen's apostle and taught his system for twenty years. When Cullen died in 1790 Rush delivered his eulogy before the College of Physicians and called himself his disciple. Then, in the fevers of the 1790s, he changed his mind about all of it. There was, he decided, "but one fever in the world," and a nosology of many diseases taught students to withhold the lancet while they looked for distinctions that did not exist. He never renounced the man. What he renounced was the system, and in its place he built one that was simpler, bolder, and, in the judgment of the century that followed, more dangerous than anything Cullen had taught him.