A Treatise on Hat-Making and Felting: Including a Full Exposition of the Singular Properties of Fur, Wool, and Hair

In Short

This practical guide serves as a technical manual and historical overview of the nineteenth-century hatting trade. It meticulously documents the transition from manual labor—using bows and hot water—to the industrial age of steam and machinery. The narrative explores the "singular properties" of fur and wool, explaining the science of felting while providing detailed recipes for stiffening agents. It endures as a fascinating snapshot of American industrial evolution, preserving the methods of a skilled trade that once relied as much on the artisan’s dexterity as on chemical precision.

The Story

The narrative begins by establishing the fundamental difference between theory and practice, arguing that the true hatter must reconcile both. Before the reader encounters a single hat, they are introduced to the raw material: hair. The text moves from the microscopic anatomy of a single filament—with its overlapping, fish-like scales—to the broader, global trade of fur. By detailing how hairs travel root-end foremost when agitated, the author demystifies the ancient process of felting, which he humorously attributes to the legendary St. Clement using wool in his sandals during a pilgrimage.

From this scientific foundation, the account shifts to the workshop floor. We follow the evolution of the "body" of the hat, starting with the manual "bowing" process, where a vibration-heavy, cat-gut-strung bow separates and distributes fur fibers with surgical precision. The narrative details the exhausting labor of "planking" or "sizing," where hatter's hands, protected by leather shields, beat, roll, and shrink the conical mass in scalding water until it achieves structural integrity.

The story of the hat then enters the realm of industry. The author tracks the transition from the old-fashioned "bare body" methods to the modern era, where machinery began to displace hand-labor. He describes the introduction of chemical agents like mercury—the "secretage" process—used to curl fibers, and the complexities of stiffening, where gums like shellac and mastic provide the necessary rigidity. As the hat moves toward completion, the text explains the intricacies of dyeing, blocking, and the refinement of the "flowing nap."

Finally, the arc reaches the modern factory of 1868. We see the rise of the "gossamer" or silk-covered hat, constructed from muslin and shellac, which signals a move toward lighter, more ephemeral fashion. The conclusion reflects on the state of the trade in America, where a confluence of immigrants from across the globe creates a melting pot of techniques. The author envisions a future where the amalgamation of these diverse methods will lead to an unprecedented perfection in the craft, even as he acknowledges that the era of the "lifetime hat" is being replaced by the rapid consumption of modern city fashion.

How It Unfolds

The science of the fiber The account opens with a biological deep-dive, examining how the scales on animal hair allow for the physical interlocking that defines felt. It uses analogies like schoolboys placing barley beards in their sleeves to illustrate the directional movement of hair.

The history of the craft The narrative bridges the gap between ancient Greek travelers and the medieval guilds of Nuremburg and London. It positions hat-making as a long-standing human endeavor, culminating in the eighteenth-century complaints of London hatters regarding American competition.

The manual workshop A vivid picture is painted of the "hurdle" and the bow-string, the traditional tools of the trade. The reader is walked through the physical exertion of shrinking and stiffening, where boiling water and human endurance create a solid cone from loose fur.

The industrial shift The arrival of machines, such as the blowing machine and the carding-based forming apparatus, is presented as a transformative force. This transition marks the end of the "old system," increasing the speed of production exponentially while altering the quality of the final product.

The finishing touches The final beats focus on the aesthetic and commercial demands of the market. Detailed instructions for dyeing, pouncing, and the application of silk plush demonstrate the transition from a utilitarian object to a piece of urban fashion.

The People

The central figure is the author, John Thomson, a "practical hatter" who speaks with the authority of years spent at the plank kettle. He views himself as a bridge between the old-world secrets of the workshop and the transparency of modern industry. He is motivated by a desire to elevate his trade from a collection of "would-be secrets" to a scientific discipline.

Standing in his way are the entrenched prejudices of older tradesmen, who guard their methods as proprietary, and the rapid, often destructive, demands of the modern consumer. The "unprincipled men" who skimp on material quality or use inferior, cheaper ingredients represent the tension between traditional craftsmanship and the race to the bottom in the mass-market economy.

The "hatter" as a collective figure emerges as a resilient actor, constantly adapting to new inventions. Whether they are the nomadic journeymen traveling from town to town or the factory owners integrating machinery, these artisans are shown as being in a state of flux. By the end of the text, they are no longer just local craftsmen, but participants in an international exchange of knowledge, destined to refine their art through the sheer diversity of their origins.

In Its Own Voice

"The practice of a trade without a knowledge of the why and the wherefore of certain usages is a sad defect in any workman, but more especially in certain trades: Hatting being one of those which depends upon second causes for its proficiency."

This serves as the author's manifesto, insisting that the hatter must understand the science behind his labor rather than relying on superstition or imitation.

"The hatters of the present day most generously ascribe the honor of the invention of felting, and of its prospective introduction to that of hat-making, to the old renowned Monk St. Clement, who when marching at the head of his pilgrim army obtained some sheep's wool to put between the soles of his feet and the sandals that he wore, which of course became matted into a solid piece."

This provides a charming, legendary anchor to a technical subject, illustrating the accidental discovery of the felting process.

What It's Really About

At its core, this work is about the triumph of observation over mystery. It seeks to answer why a pile of loose, disjointed fibers can become a solid, impermeable barrier against the elements. The author argues that craftsmanship is not a divine gift but a series of "second causes"—physical and chemical reactions that can be mastered, measured, and eventually automated. It explores the tension between the longevity of traditional goods and the fleeting nature of modern fashion. Underneath the technical descriptions lies a deeper question about the value of human labor: when a machine can produce a hat thirty times faster than a man, what remains of the artisan's soul, and how do we define quality in an age of industrial efficiency?

Why Read It Today

Readers with an interest in the history of technology or the mechanics of textiles will find this a deeply rewarding, if niche, experience. It offers a rare, ground-level view of how a common, everyday object—the hat—was once the pinnacle of chemical and manual engineering. To read these pages is to enter a nineteenth-century workshop, hearing the vibration of the bow-string and feeling the heat of the sizing kettle.

However, the modern reader should be prepared for the book’s density. It does not shy away from complex, archaic chemical recipes or the highly technical jargon of the nineteenth-century factory. Its tone is that of a practical instructor, which can feel dry or repetitive to those seeking a light narrative. Furthermore, the casual mention of toxic substances like mercury and the occasional period attitudes regarding "the natives" or industrial competition serve as stark reminders of the social and environmental context of the 1860s. Despite these challenges, the book rewards those who appreciate the beauty of a well-understood process. It leaves you with a profound, lingering awareness of the materials that surround you, transforming a simple hat into a complex, storied artifact of human ingenuity.