John French (doctor)
Encyclopedia
John French was an English
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 physician
Physician
A physician is a health care provider who practices the profession of medicine, which is concerned with promoting, maintaining or restoring human health through the study, diagnosis, and treatment of disease, injury and other physical and mental impairments...

 known for his contributions to 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 in particular to distillation
Distillation
Distillation is a method of separating mixtures based on differences in volatilities of components in a boiling liquid mixture. Distillation is a unit operation, or a physical separation process, and not a chemical reaction....

 as well as for his English translations of Latin and German works.

Life

He was born in 1616 at Broughton, near Banbury
Banbury
Banbury is a market town and civil parish on the River Cherwell in the Cherwell District of Oxfordshire. It is northwest of London, southeast of Birmingham, south of Coventry and north northwest of the county town of Oxford...

, Oxfordshire
Oxfordshire
Oxfordshire is a county in the South East region of England, bordering on Warwickshire and Northamptonshire , Buckinghamshire , Berkshire , Wiltshire and Gloucestershire ....

. He obtained a B.A.
Bachelor of Arts
A Bachelor of Arts , from the Latin artium baccalaureus, is a bachelor's degree awarded for an undergraduate course or program in either the liberal arts, the sciences, or both...

 degree from Oxford University in 1637 and an M.A. in 1640, qualifying as a physician
Physician
A physician is a health care provider who practices the profession of medicine, which is concerned with promoting, maintaining or restoring human health through the study, diagnosis, and treatment of disease, injury and other physical and mental impairments...

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

 in 1648. He died in 1657 near Boulogne
Boulogne-sur-Mer
-Road:* Metropolitan bus services are operated by the TCRB* Coach services to Calais and Dunkerque* A16 motorway-Rail:* The main railway station is Gare de Boulogne-Ville and located in the south of the city....

 while serving as a physician to the English army. He left a widow, Mary, and a son, John.

He lived at a time when the new science of 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....

 was developing from alchemy
Alchemy
Alchemy is an influential philosophical tradition whose early practitioners’ claims to profound powers were known from antiquity. The defining objectives of alchemy are varied; these include the creation of the fabled philosopher's stone possessing powers including the capability of turning base...

 and was an enthusiast for its application to medicine
Medicine
Medicine is the science and art of healing. It encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness....

. He was known for his extensive knowledge of chemistry and was respected by scientists of the time such as Robert Boyle
Robert Boyle
Robert Boyle FRS was a 17th century natural philosopher, chemist, physicist, and inventor, also noted for his writings in theology. He has been variously described as English, Irish, or Anglo-Irish, his father having come to Ireland from England during the time of the English plantations of...

.

Works

John French is chiefly remembered for publishing in 1651 The Art of Distillation, a detailed handbook of knowledge and practice at the time, said to be possibly the earliest definitive book on distillation
Distillation
Distillation is a method of separating mixtures based on differences in volatilities of components in a boiling liquid mixture. Distillation is a unit operation, or a physical separation process, and not a chemical reaction....

.. However, it has been claimed that much of it was a translation of an earlier (1500) German
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

 text by Hieronymus Brunschwig
Hieronymus Brunschwig
Hieronymus Brunschwig or Hier Brunschwygk , was a German physician, now known for his early work on chemical techniques.-Life:...

.

John French was also the translator of Three Books of Occult Philosophy in 1651 (original: De Occulta Philosophia libri tres by Heinrich Cornelius Agrippa
Heinrich Cornelius Agrippa
Heinrich Cornelius Agrippa von Nettesheim was a German magician, occult writer, theologian, astrologer, and alchemist.-Life:Agrippa was born in Cologne in 1486...

, although he was only identified as J.F. in that work. All other English translations of the book available have been merely edited versions of his work.
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