Adolf von Baeyer
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Johann Friedrich Wilhelm Adolf von Baeyer was a German chemist who synthesized indigo and developed a nomenclature for cyclic compounds. He was ennobled in the Kingdom of Bavaria in 1885 and was the 1
Baeyer in 1905
Father Johann Jacob Baeyer, Prussian lieutenant-general, the noted geodesist
Indigo dye
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Indigo dye is an organic compound with a distinctive blue color. Indigo is a natural dye obtained from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria. Dye-bearin
Adolf von Baeyer
…Johann Friedrich Wilhelm Adolf von Baeyer (German: ; 31 October 1835, Berlin – 20 August 1917, Starnberg) was a German chemist who synthesized indigo and developed a nomenclature for cyclic compounds (that was subsequently extended and adopted as part of the IUPAC organic nomenclature). He was ennobled…
Cake of indigo, c. 2 centimetres (1 in)
Indigo, historical dye collection of the Technical University of Dresden, Germany
Piece of indigo plant dye from India, c. 2+1⁄2 centimetres (1 in) square.
![Indigo factory at Allahabad, India, drawn by Émile Thérond [fr], 19th century](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Ridpath%27s_history_of_the_world%3B_being_an_account_of_the_ethnic_origin%2C_primitive_estate%2C_early_migrations%2C_social_conditions_and_present_promise_of_the_principal_families_of_men_%281897%29_%2814597001160%29.jpg/500px-Ridpath%27s_history_of_the_world%3B_being_an_account_of_the_ethnic_origin%2C_primitive_estate%2C_early_migrations%2C_social_conditions_and_present_promise_of_the_principal_families_of_men_%281897%29_%2814597001160%29.jpg)
Indigo factory at Allahabad, India, drawn by Émile Thérond [fr], 19th century