Black and white illustration depicting several varieties of sea-weed used to produce varech, also known as kelp. The accompanying text describes various applications of sea-weed, including as a fertilizer and source of alkali.
This plate is from John Howard Appleton's (1844-1930) Chemistry, Developed by Facts and Principles Drawn Chiefly from the Non-Metals, published in 1884. Intended as an introduction to the study of chemistry, this volume contains illustrations throughout the text including color plates. Color plates have been digitized along with a selection of illustrations.
Appleton, John Howard. “Figure 27. Varieties of Sea-Weed Used to Produce Varech.” Chemistry, Developed by Facts and Principles Drawn Chiefly from the Non-Metals. Providence, Rhode Island: Providence Lithograph Company, 1884. https://digital.sciencehistory.org/works/3lhf2ru.
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