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Wednesday, July 10, 2019

Search for Dyes: Daniel Solander

This year we are taking another look at our Linnaeus Apostles, but using a filter for textiles and plant dyes. The "apostles" were sent out from the University of Sweden in the 1700s by their professor, Carl Linnaeus, to gather plant specimens, name and classify them using the binomial naming system, and identify economically useful plants. Our guide for this second look is Viveka Hansen, and her work Textilia Linnaeana: Global 18th Century Textile Traditions & Trade.

Daniel Solander (1733-1782) made several expeditions to Lapland, England, and Scotland, but usually to classify museum and curiosity collections. His major botanical expedition was to join Captain James Cook, John Banks, and a team of botanists, scientists, and artists on the H.M.S. Endeavor to circumnavigate the globe. The journey lasted three years from August 1768 - July 1771. They visited Madeira, Brazil, Argentina, French Polynesia, New Zealand, Australia, Papua New Guinea, Java, South Africa and St. Helena.

Solander described Brazilwood, used to produce a range of red dyes
Illustration by Paul Hermann Wilhelm Taubert (1862-1897, public domain)


Solander's exposure to local practises and traditions for producing fabric may have been somewhat limited, since they travelled by ship, but they frequently stopped for long periods to restock provisions and make ship repairs, so had some opportunity. Some of the places they visited were so temperate that minimal clothing was required, so materials and processes for creating them were unique.

Solander did not keep a travel journal, but wrote many letters and documented the botanical material they collected (30,300 plants from 3,607 species and 110 plant families). Hansen relies on these letters and documents, and on the journals of Joseph Banks, James Cook, and Sydney Parkinson to compile her textile and dyeing information for Solander.

Solander and Banks were intrigued to see floating molluscs periodically while crossing the Atlantic between Africa and South America. Banks thought they might produce a reddish-purple color, similar to the Murex snail shell of the Mediterranean, but sightings were rare and they never had sufficient numbers with which to experiment.

In the Portuguese colony of Rio de Janeiro, their movement was restricted which curtailed their investigation. In Brazil, they did not find a dye trade, but learned of several materials used to produce dyes. Brazilwood (Caesalpinia echinata, renamed Paubrasilia echinata in 2016) and the duramen of the Fernambuca tree (Lignum fernambuca) produced reddish purple dyes. Indigo was also produced to export to Portugal (frequently taking the land that local farmers would have used to produce their food).

In Tahiti and nearby islands, they found tapa bark cloth was created for clothing and other uses. Cloth of a similar kind had also been documented in Africa, Asia, and America. Solander thought they used the same material to create tapa, as the Chinese used to make paper (the paper mulberry). Both Cook and Parkinson recorded detailed notes about tapa's production, adornment, and practical and ceremonial uses. Only parts of the bark cloth were dyed, not the whole sheet. Red and yellow were the predominant colors. Red was produced from a mixture of liquids from Ficus tinctoria and Cordia sebestena. The yellow was produce from the bark from the Morinda umbellata plant or from the fruit of Calophyllum inophyllum.  The dyes were pressed into the tapa cloth in various patterns, and seemed to remain colorfast, at least as long as they were present to observe.

In New Zealand they encountered a type of fabric produced from flax by the Maori. They described the cloth as silky and white, with colored boarders (but no details beyond that). The Maori had little use for European fabric, but were very interested to trade provisions for tapa cloth from other regions. In Australia they found the native inhabitants to be devoid of clothing, but adorned with patterns of paint,

During a brief stay in New Guinea, they observed that both men and women wore blue and white patterned cotton cloth. They did not observe the actual production, but did see the tools used for cleaning away the cotton seeds, spinning the thread, and weaving lengths of cloth. The weaving impressed them, since the warp yarn was resist-dyed (ikat). The end product was described as a clouding or waving pattern.

On their way home from the expedition they spent several months in Batavia (as did Carl Peter Thunberg). They too made observations about indigo cultivation, and the importance of the indigo trade for the Dutch East India Company.

Learn More

Textilia Linnaeana: Global 18th Century Textile Traditions & Trade by Viveka Hansen, fifth volume in the Mundus Linnae Series, issued by the IK Foundation & Company (London 2017). See pages 203-226.

Wednesday, July 3, 2019

More Lazy Daze of Summer

Welcome to the kick off to summer! We've passed all the usual milestones – Memorial Day in late May, the summer solstice a couple of weeks ago, and the kids out of school for summer break. We've had some hot days here in the San Francisco Bay Area, but relieved by our wonderful temperate weather. And everyone enjoys the extra daylight that extends into evening.

We're ready for the "lazy daze of summer"! Enjoy this gallery of favorite summer images.
My Example

Bishop Lake Marina

San Ramon Pool
Shadow Play

Patriotic Dreams

Salmon on the Grill

Pink Wine on the Patio

Borage Flower Ice Cubes

Car Wash Fun

Panicle Hydrangea

Gooseberry Blossom

Enjoy the extra hours of light doing something you love, whether working in the garden, gathering with friends and family, travelling to parts unknown, or exploring what is already around you with a fresh perspective. Happy summer daze!

Wednesday, June 26, 2019

Colours from Nature

Colours from Nature: A Dyer's Handbook  is by Jenny Dean and published by Search Press Limited (Great Britain, 2009). This is another book of treasures for the home dyer. It is full of information about dyeing, inspiration for gathering ingredients, recipes, and photographs showing the beautiful colors that are possible from nature.


Image copyrighted by Search Press Limited


The table of contents covers all the basic information including equipment and safety, preparing materials for dyeing, mordanting, and gathering and extracting dye colors from plant sources, and dyeing fiber. She also provides information about other dye sources, such as shellfish (Murex) and insects (Kermes, Lac/Sticklac, and Cochineal). Dean provides over 30 pages of recipes organized by color, and a full bibliography packed with information. She takes the point of view to consider the environment and human impact when gathering dye sources (for example, lichen can take 20-30 years to grow, so harvest only from limbs that have fallen to the ground). She also recommends avoiding the use of metal mordants since they can be toxic for people and the environment.

Dean defines three categories of dyes, summarized here:

  • Substantive dyes – those that are rich in tannins, such as bark, leaves, or fruits of certain plants (like walnut, oak, and sumac).
  • Vat dyes – those that require some kind of fermentation, such as Indigo or Tyria or Imperial purple (from shellfish). The coloring matter is not soluble in water so can't be simmered to extract. Instead the dye material coats the fiber, and may appear almost colorless as the fiber emerges from the dye vat. The color develops with exposure to oxygen or light.
  • Adjective dyes – those that require a mordant in order for colors to fully develop and be color fast. Most mordants are metal based.

This is another book that I recommend for the home dyer. It is full of useful information, and goes a little deeper about dye sources than I've seen in other books. I also appreciate her concern for using natural materials and avoiding those that could be harmful to humans and the environment.