In the fall of 1937, a 61-year-old physician named Josiah Redfern sat alone in an empty lecture hall on the top floor of a building on Sycamore Street in Cincinnati, Ohio, sorting glass specimen jars that no one had asked him to preserve. The building housed the Eclectic Medical Institute, one of the last schools in the country still teaching a medical system based on botanical preparations rather than patented compounds—and it would close its doors for good within two years. Redfern had graduated from that building in 1901. He had taught there since 1915.
By that autumn, he was one of perhaps twelve surviving men trained in the full tradition before its dismantling began. As he sorted jars of dried yarrow, goldenseal, and lobelia, he knew the next class would never learn how to prepare them. He was closing a door that no one else in the building realized was closing at all. He himself recorded almost none of this.
What remains of what he told a former student that year survives because the student kept a private notebook—the kind department heads never asked to see—which his family passed down for two more generations before anyone thought to make it public. The notebook describes a world that had already vanished by the time it was written. Born in 1876 in Adams County, Ohio, Redfern was the son of a farmer who treated his livestock and his children with the same dried plant remedies. He enrolled at the Eclectic Medical Institute at age twenty-two, when the school was one of ten eclectic medical colleges operating in the United States, training physicians in a therapeutic tradition that had run parallel to conventional allopathic medicine since the 1830s.
The eclectics were not folk healers working outside the system. They held state licenses. They took the same medical board examinations as graduates of any other accredited medical school. They operated hospitals, published peer-reviewed journals, and maintained a pharmacopeia of standardized botanical preparations that matched the precision of any allopathic institution’s formulary.
Redfern’s education included anatomy, physiology, surgery, and obstetrics, all taught from the same textbooks used elsewhere. What distinguished the curriculum was a second course of study in what the profession called specific medicines: concentrated liquid extracts of single plants, standardized so that a physician in Cincinnati and a physician in Portland could prescribe the same number of drops of the same preparation and expect the same result. The man most responsible for this standardization was John Uri Lloyd, a pharmacist who worked two buildings away from the school Redfern attended. Lloyd founded a drug manufacturing company, Lloyd Brothers, on the idea that a botanical extract could meet the same standards of reproducibility as any mineral or synthetic compound.
He spent five decades publishing on plant chemistry, extraction ratios, and the specific clinical indications documented by generations of eclectic physicians. His name appears on the title page of King’s American Dispensatory, a reference work printed in multiple editions that functioned within the tradition much as a modern pharmacopeia functions today. Lloyd was not a folk figure trading in vague tradition. He held genuine chemical credentials, corresponded with international pharmacists, and treated the plants in his catalogs with the same precision a conventional pharmacist applied to quinine or morphine.
By the time Redfern began practicing in 1910, the eclectic formulary listed hundreds of botanical preparations with documented indications, and the school’s teaching hospital kept case records the same way any conventional hospital did, tracking admissions, treatments, and outcomes. Yarrow appeared in those records as a febrifuge and fever reducer. Goldenseal appeared as an antiseptic wash and treatment for mucous membrane inflammation. Lobelia, used carefully and at specific dosages, appeared in respiratory cases.
None of this was secret knowledge. It was published, studied, and taught at an accredited institution under the same state licensing board that certified every other medical college in Ohio. It was not the quality of the evidence that made the eclectic tradition vulnerable. It was the structure of its economics.
A specific medicine extracted from a plant that grew along roadsides and fence lines could not be patented in a way that prevented competitors from growing the same plant and making the same extract. There was no proprietary chemistry to defend, no exclusive manufacturing process to license, no barrier to entry that kept a preparation profitable once its formula was known. A synthetic compound derived from petroleum or coal-tar byproducts was treated differently under patent law. It could be owned.
It could be sold at a price the market would bear rather than a price set by the cost of harvesting a plant that grew for free. That distinction mattered little to physicians treating patients in 1905. But it mattered enormously to the industrial interests that funded the reorganization of American medical education five years later. In 1904, the American Medical Association formed a Council on Medical Education tasked with inspecting and rating every medical college in the country on a three-grade scale from A to C.
The council’s early assessments were conducted quietly and attracted little public attention. That changed in 1910 when Abraham Flexner, an educator with no medical degree and no clinical training, published a report titled Medical Education in the United States and Canada, issued as bulletin number four of the Carnegie Foundation for the Advancement of Teaching. Flexner was chosen for the task specifically because he was outside the medical profession—someone whose judgment of a school’s value would rest on facility inspection rather than clinical outcomes. He toured most of the country’s medical colleges over roughly a year and a half, rating each one against a single template derived from Johns Hopkins University, a school built around laboratory science and full-time faculty rather than the apprenticeship model and clinical case study that most schools, including the eclectic institutions, still relied on.
In part, the Flexner report did not evaluate patient outcomes. It evaluated square footage of laboratories, the presence of full-time research faculty, and the availability of cadavers for dissection. Schools that could not fund those features, regardless of how their graduates performed in practice, were rated poorly. The eclectic schools were chronically underfunded compared to institutions with access to philanthropic capital from Carnegie and Rockefeller, and they scored poorly by definition because the criteria measured what well-funded institutions already possessed rather than what underfunded schools actually did well.
The funding behind the report is a matter of public record. The Carnegie Foundation commissioned and published it. Alongside that commission, the Rockefeller family’s General Education Board began directing massive grants toward medical colleges that adopted the laboratory-centered model. The Flexner report favored schools that embraced that model and withheld similar support from schools that did not.
The effect was not subtle. A school rated highly by the Council on Medical Education and favored by the Flexner model qualified for philanthropic capital that could fund new laboratories, new faculty positions, and new facilities. A poorly rated school, regardless of its clinical record, was denied that money at the moment state licensing boards began using council ratings to determine which schools’ graduates could apply for a medical license at all. Redfern watched this machinery work from the inside.
In 1911, the year after the Flexner report appeared, Ohio began informally favoring graduates of A-rated schools in its licensing decisions. By 1915, many states made the relationship explicit, refusing licenses to graduates of C-rated schools entirely. The Eclectic Medical Institute retained a C rating for most of this period—not because its graduates failed at higher rates in practice, but because the school could not fund the laboratory infrastructure the rating system demanded and had no philanthropic patron interested in providing it. The number of medical colleges in the United States tells the story plainly.
In 1910, there were roughly 155 medical colleges operating across the country, a figure that included conventional schools, homeopathic medical schools, and the ten remaining eclectic institutions. Within two decades, fewer than 80 colleges remained. The homeopathic schools, which had numbered in the dozens at the turn of the century, shrank to a small handful by the 1920s and disappeared as a distinct category shortly after. The eclectic schools fell from ten to two, then to one.
The speed of this contraction is the detail that deserves the most attention, because genuine shifts in scientific understanding that topple an entire therapeutic tradition based on evidence usually unfold over generations. The germ theory of disease took roughly half a century to replace the older miasma model, moving through the profession as research accumulated and older physicians retired. The dismantling of botanical medical education took less than twenty years, and it did not follow the publication of any single study refuting the eclectic therapeutic formulas. It followed funding decisions and licensing rule changes made by boards that, by the 1920s, were increasingly run by graduates of the schools the new funding system favored.
Redfern’s notebook, as relayed by his former student, records the question of mercury as the detail that angered him most in his final years. Calomel, a mercury compound, remained a standard treatment for a wide range of conditions in conventional American medicine through the nineteenth century and continued in some form into the twentieth. Physicians prescribed it for fevers, digestive disorders, and a long list of conditions connected only loosely to mercury’s actual physiological effect, which at sufficient dosages included poisoning the patient it was meant to treat. The eclectic physicians had objected to calomel for decades, publishing case after case of patients suffering mercury poisoning, gum tissue necrosis, and in severe cases organ damage, attributed directly to a treatment their conventional counterparts considered standard practice.
These were not fringe criticisms. They were documented clinical objections published in eclectic medical journals with the same rigor as any other clinical paper of the era. What disturbed Redfern was not that the Flexner reorganization eventually helped remove calomel from routine use, which it did, alongside a broader shift toward evidence-based pharmacology that the eclectics themselves had been demanding. What disturbed him was that the same reorganization, in the same decade, also eliminated the institutional structure that had been raising the best-documented objections against mercury poisoning in the first place—and did so using a rating system that never once asked whether graduates of the schools were killing their patients or curing them.
The schools that survived were not chosen because their treatments outperformed the eclectic formulary in outcomes. They were chosen because they had laboratories, and laboratories required capital, and capital flowed from a small number of philanthropic sources with a specific, well-documented interest in an emerging pharmaceutical industry built on manufactured, patentable compounds rather than plants any farmer could grow along a fence line. The connection between that emerging industry and the philanthropic capital funding medical education reform is not speculation. Standard Oil, the main industrial holding of the Rockefeller family, was developing in the same period the chemical operations that would become the foundation of twentieth-century pharmaceutical industries.
A medical education system oriented toward laboratory chemistry and patentable compounds emerged as a secondary structural result, not as a stated goal: a workforce of physicians trained to prescribe exactly the category of products the emerging industry was positioned to supply. No one needed to write a memo stating that intention for the effect to occur. The rating criteria did the work on their own, favoring laboratory-model schools and strangling schools built around a formulary of unpatentable plants. Regardless of what patients at either type of school experienced, the medical history of John D.
Rockefeller himself stands at an odd angle to this story and deserves to be stated plainly rather than ignored. For much of his later life, Rockefeller’s personal physician was Hamilton Biggar, a homeopathic practitioner. Rockefeller’s own health regimen during his final decades relied on the same botanical and homeopathic practices the reorganization his philanthropy funded was simultaneously defunding in medical colleges. He lived to ninety-seven.
This detail appears in his own biographical record and is not disputed by historians who have examined it. This does not prove intent behind the funding decisions. But it demonstrates at least that the therapeutic tradition excluded from institutional training was not excluded because the man funding its exclusion believed it worthless. He used it himself in private while the schools teaching it publicly closed one by one for lack of the capital his foundation chose to direct elsewhere.
The eclectic schools were not the only victims of this reorganization, and the pattern with the other victims is instructive. The physio-medical colleges—a smaller botanical tradition with its own formulary and state-licensed graduates—vanished entirely within the same two decades, leaving no surviving institution by the 1930s. The homeopathic schools, which trained thousands of licensed physicians across dozens of institutions at the turn of the century, followed the same path, collapsing from roughly twenty-two schools in 1900 to a single surviving institution by 1920. In each case, the mechanism was identical.
A rating system built around laboratory infrastructure and full-time research faculty measured the wrong variable for a tradition whose value lay in clinical knowledge of drug preparations rather than laboratory science. And a licensing system tied to the rating system turned low grades into a practical death sentence, regardless of what the school’s graduates actually achieved in practice. Johns Hopkins, the model around which Flexner built his entire evaluation, had received a series of massive individual endowments, including significant support connected to the Rockefeller family, which funded full-time faculty positions and dedicated laboratory space. No eclectic, physio-medical, or homeopathic school could match that without a similar patron.
The schools were not competing on the same field. One category had access to a concentrated, specific flow of philanthropic capital tied to an emerging pharmaceutical economy, and the other did not. The rating system Flexner designed measured almost nothing except which category a given school belonged to. Redfern taught through all of this.
He watched enrollment at the Eclectic Medical Institute fall from several hundred at the turn of the century to a few dozen by the mid-1920s, then to single digits in the graduating classes of the following decade. He watched younger colleagues leave the tradition for conventional training—not because they had lost faith in the drug formulas, but because a diploma from a C-rated school had become, in a growing number of states, a diploma that could not be used to obtain a license at all. He continued teaching specific drug preparation methods to a shrinking number of students who understood, exactly as he did, that they were likely training in a specialty that would no longer exist as a credentialed profession by the time they reached his age. By 1935, the Eclectic Medical Institute in Cincinnati was one of only two schools left in the entire country granting degrees in the tradition.
The other closed first. The Cincinnati institute’s own board of trustees voted to close the school in 1939. It did not close because a government agency ordered it shut, or because any inspection found its clinical education deficient. It closed because it could no longer attract enough new students willing to enter a profession that no longer offered a viable path to licensing in most of the country.
No competing research paper ever proved that yarrow, goldenseal, or lobelia had stopped working. No clinical review of the institute’s hospital records found its outcomes inferior to comparable allopathic hospitals of similar size in the same city. The drug formulas themselves were never refuted in a courtroom or a peer-reviewed scientific journal. The science simply stopped being taught because the institutional structure that had trained physicians in it for nearly a century was denied the one resource—capital—that the new accreditation system required, which the old formulas, based on plants that grew for free, did not need and could not generate on their own terms.
Redfern spent his final working years, from 1937 until the school closed two years later, cataloging what he could of the collection. Instead of passing knowledge to the next generation, he labeled specimen jars that no incoming class of students would ever need to recognize. He copied preparation ratios from memory into a set of private notes. Not because any institution asked him to preserve the record, but because he understood, watching enrollment decline year after year, that once the last class of graduates left the building, no one would remain who had learned this specific medical tradition directly from a teacher who had learned it the same way.
A textbook could describe the plant. But it could not transmit the accumulated clinical judgment of generations of physicians who had spent their careers refining dosages and preparations through direct observation of thousands of patients. That judgment lived in people’s minds, and those people were dying or retiring faster than they were being replaced. Decades later, he confided to his former student that the last thing he did before locking the collection room for the final time was to write down, from memory, the precise ratio Lloyd had developed for the yarrow tincture used in postpartum hemorrhage cases—a preparation the institute’s teaching hospital had used successfully for three decades.
He had no confidence anyone would ever open that page again. He wrote it anyway because the alternative was letting it disappear with him, and he had already seen too much of this tradition disappear that way to allow one more piece of it to be lost without at least attempting preservation. The closing of the Eclectic Medical Institute did not end the story Redfern was trying to preserve. It only ended the last institution large enough to teach it as a complete system.
What happened to the drug formulas themselves, and to the physicians who spent their lives defending them, is a separate and in some ways more revealing record—one that appears less in medical history and more in the quiet, unremarked revisions of the pharmacopeia over the following decades. The United States Pharmacopeia is the official reference standard for drugs recognized in American medical practice. The yarrow, goldenseal, lobelia, and dozens of other botanical preparations that anchored the eclectic pharmacy for nearly a century were periodically reviewed by a committee of physicians and pharmacists, appeared in early twentieth-century editions, and were then quietly dropped in subsequent revisions. This did not happen through a single dramatic vote.
It happened through slow administrative reclassification that removed them from official recognition, one entry at a time. Most removals were accompanied by no public hearings. No clinical trial proved the preparations had stopped working. The committees conducting these reviews were by then increasingly composed of physicians trained in the laboratory-focused schools.
The Flexner reorganization had favored physicians who had never learned the specific medicine tradition and had no institutional reason to defend a category of preparations their training had deemed obsolete before they ever examined the clinical record behind it. John Uri Lloyd lived until 1936, long enough to watch nearly the entire arc of this collapse unfold around the pharmaceutical enterprise he had spent his life building. He continued publishing revised editions of King’s American Dispensary through those years, adding new pharmacological detail, even as the institutional audience for that detail shrank with each passing decade. His position was not framed as a rejection of laboratory science.
He had always believed in rigorous chemical analysis of plant compounds, and much of his life’s work anticipated the kind of standardized, reproducible preparation laboratory pharmacy would later demand for any compound entering clinical use. His argument, preserved in his published writings rather than reconstructed from secondary testimony, was that a preparation with decades of documented clinical outcomes should not be stricken from the official record merely because the institutions now writing that record had not been trained to evaluate it on its own terms. Redfern outlived Lloyd by more than two decades. He continued private practice in Cincinnati after the Eclectic Medical Institute closed in 1939, treating a dwindling number of patients who sought him out specifically for the kind of care his conventional colleagues no longer offered.
He kept his own notebooks. He kept the specimen jars he had cataloged in the school’s final years, moving them from his office to his home when his practice finally wound down. His former student, whose account was eventually preserved, visited him regularly through the 1950s. During those visits, especially in the last eighteen months of Redfern’s life, the old man began speaking more openly about what he had watched happen and the cost he believed it had exacted.
By 1958, Redfern was eighty-two, in failing health, housebound, his hands trembling so badly he could no longer prepare the drugs he had spent sixty years perfecting. His former student, in a private notebook that still exists, recorded a conversation from that winter in which Redfern described the closing of the institute not as the end of a school but as the end of a kind of clinical judgment that had taken generations to accumulate and could not be rebuilt by any single physician, however careful, in a single lifetime. He said the tragedy of what happened was not the replacement of a good system with a bad one. The laboratory-based medicine that succeeded the eclectic tradition had achieved genuine advances the old system lacked.
The tragedy, in his telling, was that the elimination was carried out through funding and licensing mechanisms that never once measured the thing they claimed to correct: patient treatment outcomes. And that in discarding an entire clinical record on the basis of laboratory square footage, documented knowledge about mercury toxicity, hemostatic plant preparations, and fever management was wasted—knowledge that later generations of conventional medicine spent decades rediscovering through separate research, often without any awareness that the older tradition had already reached the same conclusions using different methods and simpler tools. Redfern died in the spring of 1959, a few months after that conversation. His former student kept the notebook alongside a number of Redfern’s preparation records throughout his career, occasionally showing them to colleagues interested in the history of American medical education, but rarely finding anyone willing to treat the material as more than a historical curiosity.
The notebook eventually passed to the student’s daughter, who donated part of it to a regional historical society in the 1990s, where it remains cataloged and largely unstudied beside a modest collection of other papers from physicians of that vanished generation. What remains physically of the Eclectic Medical Institute itself is very limited. The Sycamore Street building that housed the school through its final decades was sold after the 1939 closing, repurposed for commercial use unrelated to medicine, then demolished decades later during a broader redevelopment of that section of Cincinnati. No historical marker identifies the site.
The Lloyd Library, which John Uri Lloyd built specifically to house the botanical and pharmacological reference collection he assembled over his career, still stands in Cincinnati and remains one of the few institutions in the country preserving an intact archive of eclectic pharmacological literature. Although it functions today as a specialized research library rather than part of an active medical training program, the drug formulas themselves did not so much disappear as move entirely outside institutional medicine. The yarrow, goldenseal, and lobelia plants remain botanically identical to those Redfern’s generation used in their preparations. They still grow along the same roadsides and waste grounds where they always grew.
The plant did not change. Something else changed. What changed was the institutional infrastructure that once trained physicians to prepare them with clinical precision, tested their preparations against documented patient outcomes, and passed that accumulated expertise through a formal educational chain from teacher to student across multiple generations. That infrastructure does not currently exist within conventional American medical education in any form resembling what Redfern trained in.
The specific dosage ratios, blending protocols, and clinical indications that eclectic physicians spent a century refining today survive mostly in scattered archival collections, like the one holding Redfern’s notebook, which historians occasionally consult and practicing physicians never read. Contemporary pharmacological research in the decades since has independently confirmed many of the mechanisms the eclectic formulas relied on. Modern laboratory analysis of yarrow has identified compounds consistent with its traditional use as a hemostatic and fever-reducing agent. Antimicrobial compounds in goldenseal have been isolated and studied in modern pharmacology literature.
None of this research was conducted by physicians working within Redfern’s tradition, and little of it refers to the specific institutional record the eclectic schools maintained, because that record was never integrated into mainstream medical education after being excluded from it. Clinical knowledge and modern chemical confirmation developed on separate, unconnected tracks, each independently reaching conclusions the older tradition had already arrived at through direct clinical observation decades—or in some cases a full century—earlier. Lloyd himself responded directly to the Flexner report in the press, arguing across several articles published in the years after its release that the rating system measured facilities rather than physicians, and that if applied consistently it would have penalized any medical tradition lacking access to the specific flow of philanthropic funding the favored schools received. He was careful in these writings not to reject laboratory science itself, given that much of his career was devoted to bringing that kind of rigor to plant chemistry.
His argument was narrower—and it received little attention within his own profession at the time. He asserted that a century of clinical case documentation tracking real patients and real outcomes constituted evidence, and that discarding it because it was not produced inside a university laboratory was not a scientific judgment but an administrative one wrapped in scientific language. Lloyd’s predecessor in standardizing the eclectic formulary, a physician named John King who published the earliest version of the American Dispensatory decades before Lloyd’s revisions, had spent much of his career making the same argument to an earlier generation of skeptics within conventional medicine. Neither man’s case affected the funding and licensing mechanisms that determined the final outcome, regardless of the merits of the argument itself.
The mercury question was ultimately resolved in the direction the eclectics had argued for. Calomel fell out of general medical use during the early decades of the twentieth century. By the 1930s, mainstream American medicine had largely abandoned mercury compounds as routine treatment, independently reaching a conclusion the eclectic formulas had been documenting since at least the 1870s. Mainstream professions did not attribute this shift to the eclectic clinical records when it occurred.
The change is usually credited in mainstream medical history to newer synthetic compounds that simply replaced calomel in the market, rather than to the accumulated evidence of mercury toxicity that eclectic physicians spent decades compiling—evidence the profession that absorbed the correction no longer had any institutional memory of, because the schools that held that memory had already been defunded and closed. A modest revival of interest in the herbal tradition Redfern trained in began decades after his death, driven mostly by practitioners and researchers working entirely outside conventional medical education. The American Herbalists Guild, founded in the late 1980s, gathered clinical herbalists working to reconstruct something resembling the documented prescription-based practice the eclectic schools once maintained—though without the accredited institutional support, teaching hospitals, or state licensing that had once anchored the tradition within mainstream medicine. Pharmacognosy, the scientific study of plant-derived medicines, continued as an academic discipline throughout the twentieth century.
It is largely through pharmacognosy research, rather than through any restored clinical tradition, that modern laboratory science re-confirmed many of the mechanisms Redfern’s generation had already documented through direct patient observation. This confirmation arrived decades after the institutional knowledge identifying those mechanisms had faded. It was built by researchers who in most cases had no idea a century of formal clinical documentation about the same plants existed in an archive no one in their field had reason to consult: the Lloyd Library. The reference collection John Uri Lloyd built in Cincinnati specifically to house the pharmaceutical literature his life’s work depended on is the only part of this institutional world that never closed its doors.
It survived the collapse of the school two buildings away, survived the deaths of the physicians who once used it as a working clinical reference, and still operates today as a specialized research library. Its shelves hold editions of King’s American Dispensary, decades of eclectic medical journals, and prescription records documenting with precise clinical detail the same kind of individual case evidence the Flexner rating system never asked to see. Access to the collection today is limited mostly to medical historians and occasional pharmacognosy researchers tracing a specific compound through its documented clinical history. Practicing physicians—the heirs of the therapeutic tradition that ultimately replaced the one the library was built to preserve—do not routinely consult it.
A handful of American medical colleges in the decades since Redfern’s death have introduced electives in what is now generally called integrative or botanical medicine, usually framed as a supplement to conventional pharmacology rather than a restoration of the prescription-based training eclectic and physio-medical schools once offered. These programs rarely reference the specific institutional history of the schools closed in the 1910s and 1920s. In most cases, the physicians who created them were unaware that a full century of formal clinical documentation about many of the same plants they were reintroducing existed in libraries such as the Lloyd Library, unread by the profession that had once produced it—and then forgotten that it had done so. Redfern’s former student never became a physician.
He trained as a pharmacist, worked in Cincinnati for four decades, and kept Redfern’s notebook among his private papers, largely out of personal loyalty rather than any conviction that it would matter to anyone outside his family. He occasionally mentioned it to colleagues over the years, usually met with polite, limited interest—the kind reserved for old men’s stories about an obsolete profession, rather than a documented account of how that profession had been made obsolete in the first place. It was his daughter who, sorting his papers after his death in the 1990s, realized what she was holding and arranged for its donation to the regional historical society where it remains today. One volume among many.
Its catalog entry gives no indication that it contains the last firsthand account of a physician who watched from the inside the specific mechanism by which an entire century of documented clinical knowledge was allowed to disappear. What remains in the end is a documented sequence of funding decisions, rating criteria, and licensing rule changes—each defensible on its own terms, but together producing the near-total elimination of an entire clinical tradition within two decades, based on criteria that never measured that tradition’s actual clinical performance. No single party working in secret needed to plan this result for it to occur. The Carnegie Foundation commissioned a man with no medical training to write a report.
Rockefeller’s General Education Board directed capital toward schools the report favored and away from those it did not. State licensing boards adopted the resulting ratings as a gatekeeping mechanism for professional licensure. Each step is a matter of public record. None of it required inventing anything.
It only required following the money and the paperwork far enough to see where they led—which is exactly what Redfern spent his final years trying to do in his own quiet, largely undocumented way. His notebooks still exist in the regional historical society’s archive, filed under a donor’s name rather than his own, waiting for a researcher patient enough to read past the catalog description—to find, in the record of a dying man watching his profession disintegrate around him, the precise ratio of a tincture that had stopped bleeding in patients the newer forms of medicine had not yet learned how to save. The plant it was extracted from still grows along the roadside outside that archive itself, unnoticed, unpatented, entirely unaware that the knowledge of what it once did for a dying patient had ever needed saving in the first place.