Conrad Quensel was a Swedish naturalist

Naturalist

Naturalist may refer to:* Practitioner of natural history* Conservationist* Advocate of naturalism * Naturalist , autobiography-See also:* The American Naturalist, periodical* Naturalism...

.

He was the grandchild of the astronomer

Astronomer

An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...

 of same name.
In 1783 Quensel became a student at the University of Lund and gained there (1787) his Magisterexamen in philosophy

Philosophy

Philosophy is the study of general and fundamental problems, such as those connected with existence, knowledge, values, reason, mind, and language. Philosophy is distinguished from other ways of addressing such problems by its critical, generally systematic approach and its reliance on rational...

. In 1789 he undertook a study trip to Lappland

Lappland

Lappland can refer to:*Lapland, geographic region in Northern Fennoscandia* Lappland, Sweden* Lapland, FinlandUnlike the English word "Lapland", the Swedish word is not used to indicate the area specifically inhabited by the Sami people. An old Swedish word for the Sami area under Swedish control...

, where he described several new species of insect

Insect

Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...

s.

Starting from 1791 he was an employee of the Botanic Garden at the University of Uppsala

Linnaean Garden

The Linnaean Garden or Linnaeus' Garden is the oldest of the botanical gardens belonging to Uppsala University in Sweden. It has been restored and is kept as an 18th century botanical garden, according to the specifications of Carolus Linnaeus.The garden was originally planned and planted by Olaus...

, in 1797 he became a Doctor of Medicine

Doctor of Medicine

Doctor of Medicine is a doctoral degree for physicians. The degree is granted by medical schools...

 and after 1798 he became Director of the nature cabinet (Naturkabinetts

Cabinet of curiosities

A cabinet of curiosities was an encyclopedic collection in Renaissance Europe of types of objects whose categorical boundaries were yet to be defined. They were also known by various names such as Cabinet of Wonder, and in German Kunstkammer or Wunderkammer...

) of the Royal Swedish Academy of Sciences

Royal Swedish Academy of Sciences

The Royal Swedish Academy of Sciences or Kungliga Vetenskapsakademien is one of the Royal Academies of Sweden. The Academy is an independent, non-governmental scientific organization which acts to promote the sciences, primarily the natural sciences and mathematics.The Academy was founded on 2...

 in Stockholm.

Later he became a chemistry

Chemistry

Chemistry is the science of matter, especially its chemical reactions, but also its composition, structure and properties. Chemistry is concerned with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds....

 and natural history

Natural history

Natural history is the scientific research of plants or animals, leaning more towards observational rather than experimental methods of study, and encompasses more research published in magazines than in academic journals. Grouped among the natural sciences, natural history is the systematic study...

 teacher at the military school in Schloss Karlberg, where he received in 1805 the title of professor. Quensel wrote the largest part of the text of the first four volumes of the book " Svensk Botanik" (Swedish Botany) (1802–1843) with copper plates by Johan Wilhelm Palmstruch

Johan Wilhelm Palmstruch

Johan Wilhelm Palmstruch was a soldier, artist and naturalist.Palmstruch was a Swedish captain of cavalry. Known as the Swedish Sowerby he published two vast works of natural history, Svensk Botanik et Svensk Zoologi.- External links :* Digital Svensk Botanik' from the Biodiversity Heritage Library...

. He wrote also the text of the first volume of " Svensk Zoologi" in English SwedishZoology (1806–1809)and parts of Carl Johan Schönherr

Carl Johan Schönherr

Carl Johan Schönherr was a Swedish entomologist who revised the taxonomy of beetles, including weevils.Born in Stockholm, Schönherr was son of a German immigrant who had established himself as a silk manufacturer. At the age of nineteen, he took over the business together with his mother and...

's Genera et species curculionidum, cum synonymia hujus familiae,specie novae aut hactenus minus cognitae, descriptionibus a dom. Leonardo Gyllenhal, C. H. Boheman; et entomologis aliis illustratae