Panel painters in both the middle ages and the fifteenth century created works that evoke the luster of precious stones, the sheen of polished gold and silver, and the colorful radiance of stained glass. Yet their approaches to rendering these materials were markedly different. In The Varnish and the Glaze: Painting Splendor with Oil, 1100–1500 (U Chicago Press, 2023), Dr. Marjolijn Bol explores some of the reasons behind this radical transformation by telling the history of the two oil painting techniques used to depict everything that glistens and glows—varnish and glaze.

For more than a century after his death, the fifteenth-century painter Jan van Eyck was widely credited with inventing varnish and oil paint, on account of his unique visual realism. Once this was revealed to be a myth, the verisimilitude of his work was attributed instead to a new translucent painting technique: the glaze. Today, most theories about how Van Eyck achieved this realism revolve around the idea that he was the first to discover or refine the glazing technique. Bol, however, argues that, rather than being a fifteenth-century refinement, varnishing and glazing began centuries before. Drawing from an extensive body of recipes, Dr. Bol pieces together how varnishes and glazes were first developed as part of the medieval art of material mimesis. Artisans embellished metalwork and wood with varnishes and glazes to imitate gold and gems; infused rock crystal with oil, resin, and colorants to imitate more precious minerals; and oiled parchment to transform it into the appearance of green glass. Likewise, medieval panel painters used varnishes and glazes to create the look of enamel, silk, and more.

The explorations of materials and their optical properties by these artists stimulated natural philosophers to come up with theories about transparent and translucent materials produced by the earth. Natural historians, influenced by medieval artists’ understanding of refraction and reflection, developed theories about gems, their creation, and their optical qualities.

This interview was conducted by Dr. Miranda Melcher whose book focuses on post-conflict military integration, understanding treaty negotiation and implementation in civil war contexts, with qualitative analysis of the Angolan and Mozambican civil wars. You can find Miranda’s interviews on New Books with Miranda Melcher, wherever you get your podcasts.

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In popular accounts of the Glorious Revolution of 1688, the autocratic Catholic King James II was ousted by his subjects and replaced by his Protestant daughter Mary Stuart, wife of James’s nephew, the Dutch William III of Orange. Devoted to her husband, Mary would not accept the crown alone, and so William and Mary were crowned together, securing a smooth dynastic succession. The Last Invasion of England: 1688 and the Dutch Armada (Princeton UP, 2026) recounts the forgotten campaign that carried William and his army to English shores and led directly to James’s fall, bringing a revolutionary age vividly to life—and rewriting the history of Britain, Europe and the transatlantic world more widely.

In this bold work of revisionist history, Dr. Arthur der Weduwen tells the momentous story of the Dutch Armada, describing the immense risks and near failures of the last seaborne invasion of England—which occurred exactly one hundred years after the defeat of the Spanish Armada. The sixteen thousand Dutch troops who accompanied William were not on hand for moral support. They came with sword, musket and cannon. Dr. der Weduwen argues that the political revolution in Britain could not have been achieved without the willpower, might and resources of William and the Dutch nation, and explains why the Dutch Republic, a small state that celebrated peace and commerce above all else, would dare to undertake a reckless preemptive military strike on its more powerful neighbour.

Transforming our understanding of the Glorious Revolution and Britain’s ascendancy as a global powerhouse, The Last Invasion of England relies entirely on contemporary sources, many from leading protagonists who prepared and executed the invasion, evoking the historical realities of the women and men who lived during turbulent and uncertain times.

This interview was conducted by Dr. Miranda Melcher whose book focuses on post-conflict military integration, understanding treaty negotiation and implementation in civil war contexts, with qualitative analysis of the Angolan and Mozambican civil wars. You can find Miranda’s interviews on New Books with Miranda Melcher, wherever you get your podcasts.

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In this episode of the Language on the Move Podcast, Brynn Quick chats with Professor Dr. Natalia Filatkina, Dr. Kerstin Roth and Research Associate Miriam Hinterholzer. All three work at the University of Hamburg in Germany on a long-term research project, called FSL Digital, that investigates language history, language attitudes and everyday communication in the context of multilingualism in early modern Europe.

As part of this project, today’s guests annotate and analyse multilingual foreign language textbooks from the 15th to 17th centuries.

Today’s guests discuss these textbooks, the research project, and what historical foreign language manuals can tell us about language attitudes and expectations of foreign language learning.

For additional resources, show notes, and transcripts, go here.

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