More than a Manual: Early-Modern Mathematical Instrument Books

In Elizabethan London, one of the more surprising things a wealthy owner of a beautifully illustrated folio volume could do was to take a sharp knife and cut it to pieces. John Blagrave’s 1585 Mathematical Jewel, in fact, demands nothing less.[1] This work, which introduced an elaborate instrument of Blagrave’s design for performing astronomical calculations, included woodcuts that were specifically provided in order to be cut out and used as surrogates for the brass original:

get very fine pastboord made of purpose, and then spred your paste very fine thereon, & quickly laying on this picture & clappe it streight into a presse before it bee thorowe wette with the paste (fol. ¶6v)

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The Manual as Artifact: On Artists’ Manuals and Craftsmen’s Handbooks

On November 4, 1646, Sir Theodore de Mayerne (1573–1655), first physician to Charles I and the English Aristocracy, decided to spend his day away from his demanding patients and to devote his attention to the vibrant world of colors. He took a good handful of bilberries and carefully inspected the color of their peel and pulp. He then cooked them following a recipe for making a “very beautiful and very oriental” colorant for writing and limning. The recipe he followed has survived as part of an extensive manuscript collection dated to the first half of the seventeenth century. Continue reading “The Manual as Artifact: On Artists’ Manuals and Craftsmen’s Handbooks”

Popular and Specialist Artisanal Knowledge in China, Mid-Thirteenth to Early Twentieth Centuries

In premodern China, the population was roughly divided according to professions into four groups: literati, farmers, artisans, and merchants. During this period, artisanal knowledge was mainly transmitted in person. Most Chinese artisans were not as literate as their European counterparts, if literate at all, and written texts played a minor role in the transmission of their specialized knowledge.[1] The master of a workshop taught the apprentices how to perform bodily actions by working alongside them and only transmitted written knowledge with brief and codified texts. Sometimes craft recipes were not even written down; they were memorized by masters and transferred verbally to designated successors in the craft. [2] Continue reading “Popular and Specialist Artisanal Knowledge in China, Mid-Thirteenth to Early Twentieth Centuries”

Vicissitudes in Soldering: Reading and Working with a Historical Gold- and Silversmithing Manual

In 1721, the Dutch craftsman Willem van Laer (1674–1722) published a Guidebook for Upcoming Gold- and Silversmiths. Intended as a manual to educate young novices, the Guidebook discussed a variety of different practices, techniques, and skills that ranged from assays to determine the quality of precious metals to sand mold casting and polishing (Figure 1). Four different editions, including one pirated copy, appeared in less than fifty years, attesting to its popularity. The book was explicitly aimed at teaching young readers how to do and make things. Van Laer reassured readers by saying “there will be few young gold- or silversmiths, who won’t find anything to their liking and benefit while reading this book; they will be led by hand to the knowledge of many things.”[1] Yet, however confident Van Laer might come across in this passage, there is sufficient reason to question the actual success of Guidebook at explaining and delivering these skills. Practical knowledge is often better demonstrated than written down. Van Laer was very well aware of this fact and offered disclaimers warning his readers that full comprehension of the text was only achieved when complemented with manual instruction. This begs the question of what could, in fact, be learned from the Guidebook. Continue reading “Vicissitudes in Soldering: Reading and Working with a Historical Gold- and Silversmithing Manual”