Jonathan Pereira
Encyclopedia
Jonathan Pereira was a pharmacologist, author of the Elements of Materia Medica, a standard work. He was examiner on the subject in the University of London
University of London
-20th century:Shortly after 6 Burlington Gardens was vacated, the University went through a period of rapid expansion. Bedford College, Royal Holloway and the London School of Economics all joined in 1900, Regent's Park College, which had affiliated in 1841 became an official divinity school of the...

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Pereira graduated as apothecary in 1823 after studying at the Aldersgate General Dispensary and St Bartholomew's Hospital
St Bartholomew's Hospital
St Bartholomew's Hospital, also known as Barts, is a hospital in Smithfield in the City of London, England.-Early history:It was founded in 1123 by Raherus or Rahere , a favourite courtier of King Henry I...

. In 1826 he became lecturer on chemistry at the Royal College of Surgeons and in 1832 he was an established physician in London, being appointed professor of materia medica and lecturer in chemistry at the Aldersgate Medical School. In 1839 he became professor and lecturer at the London Hospital, where he received the position of assistant physician in 1841. Jonathan Pereira delivered the introductory lectures on Materia Medica in 1842 at the Pharmaceutical Society
Royal Pharmaceutical Society of Great Britain
The Royal Pharmaceutical Society of Great Britain was formerly the statutory regulatory and professional body for pharmacists and pharmacy technicians in England, Scotland and Wales...

 and one year later he was appointed as Professor of Materia Medica by this institution, examining the subject in the University of London. His subject area was the forerunner of pharmacology and he published a series of research papers on plant drugs. Pereira later resigned in 1852, the result of a dispute between the Council of the Pharmaceutical Society following the illegal publications of his lecture material. After this incident another teacher in material medica was not appointed, instead Professor Robert Bentley, who was professor of botany at the time, was asked to combine the lectures with his botany lectures.

Pereira's Materia Medica

His interest in the area of crude drugs began when he realised that little was known about those imported into Britain. After years of research he acquired an extensive knowledge of the history of origin, morphology and histology
Histology
Histology is the study of the microscopic anatomy of cells and tissues of plants and animals. It is performed by examining cells and tissues commonly by sectioning and staining; followed by examination under a light microscope or electron microscope...

 of crude drugs where he was later appointed professor of material medica at the London Hospital. His book on Materia Medica
Materia medica
Materia medica is a Latin medical term for the body of collected knowledge about the therapeutic properties of any substance used for healing . The term 'materia medica' derived from the title of a work by the Ancient Greek physician Pedanius Dioscorides in the 1st century AD, De materia medica libre...

 was the first great English work on Pharmacology
Pharmacology
Pharmacology is the branch of medicine and biology concerned with the study of drug action. More specifically, it is the study of the interactions that occur between a living organism and chemicals that affect normal or abnormal biochemical function...

 and he was foremost in putting the knowledge and use of drugs on a scientific footing.
During one of his first lectures held at the School of Pharmacy he spoke about ‘material medica consisting of three parts: (1) pharmacognosy, pharmacology, pharmacopathia or the history of simple drugs; (2) pharmacy, and (3) pharmacodynamics. It was here that he referred to the study of crude drugs under the name pharmacognosy instead of materia medica in what appeared to be the first time in which it was used, when in fact it was introduced by Seydler in 1817. It took many years until the term was officially used as the name of the subject taught to pharmacy students.
Students of Pharmacy studying for their major examinations where given the opportunity of examining the drugs further as well as being introduced to the microscope as another method for the examination of drugs in their powdered form such as starch, with the exception of vegetable drugs. Although where not being examined on authenticity and quality, Pereira encouraged his students to investigate authenticity and quality of drugs, something that he was carrying out a lot of research on at the time. This was considered an important part of the pharmacists role as Jacob Bell pointed out ‘the reputation of pharmacy depended upon pharmacists having this expertise.
Jonathan Pereira's outstanding contributions to science
Science
Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe...

 were fully recognised by his colleagues as he became Fellow of the Royal Society in May 1838. Two years later he received the degree of M.D. "honoris causa" from Erlangen University. In his memory a marble bust was erected in the London Hospital and the Pharmaceutical Society founded the Pereira Medal and a scholarship fund with his name.

Works

  • The Elements of Materia Medica and Therapeutics : in 2 Vol. - Philadelphia : Lea & Blanchard, 1843. Digital ed.

External links

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