Leon Paweł Teodor Marchlewski (15 December 1869 in

Włocławek Włocławek (Polish pronunciation: ; german: Leslau) is a city located in central Poland along the Vistula (Wisła) River and is bordered by the Gostynin-Włocławek Landscape Park. As of December 2021, the population of the city is 106,928. Loc ...

– 16 January 1946 in

Kraków Kraków (), or Cracow, is the second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Voivodeship, the city dates back to the seventh century. Kraków was the official capital of Poland until 1596 ...

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It is divided into 16 administrative provinces called voivodeships, covering an area of . Poland has a population of over 38 million and is the fifth-most populous ...

) was a Polish

chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe th ...

and an Honorary Member of the

Polish Chemical Society The Polish Chemical Society ( pl, Polskie Towarzystwo Chemiczne, PTCHEM) is a professional scientific society of Polish chemists. History The society was founded of 118 Charter Members on 29 June 1919 on the initiative of Leon Marchlewski, Stan ...

. He was one of the founders in the field of

chlorophyll Chlorophyll (also chlorophyl) is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words , ("pale green") and , ("leaf"). Chlorophyll allow plants to a ...

chemistry Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...

. The illustration on the right is of his diplomatic passport he used in 1927 to attend an international conference on chemistry in Paris.

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* 1869 births 1946 deaths Burials at Rakowicki Cemetery People from Włocławek Polish senators Polish chemists Chemical pathologists Members of the Lwów Scientific Society Rectors of the Jagiellonian University Commanders of the Order of Polonia Restituta People from Congress Poland {{Chemist-stub