Jan Baptist van Helmont
Overview
 
Jan Baptist van Helmont (bapt. 12 January 1579 – 30 December 1644) was an early modern period
Early modern period
In history, the early modern period of modern history follows the late Middle Ages. Although the chronological limits of the period are open to debate, the timeframe spans the period after the late portion of the Middle Ages through the beginning of the Age of Revolutions...

 Flemish
Flemish people
The Flemings or Flemish are the Dutch-speaking inhabitants of Belgium, where they are mostly found in the northern region of Flanders. They are one of two principal cultural-linguistic groups in Belgium, the other being the French-speaking Walloons...

 chemist
Chemist
A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

, physiologist, and 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...

. He worked during the years just after Paracelsus
Paracelsus
Paracelsus was a German-Swiss Renaissance physician, botanist, alchemist, astrologer, and general occultist....

 and iatrochemistry
Iatrochemistry
Iatrochemistry is a branch of both chemistry and medicine. Having its roots in alchemy, iatrochemistry seeks to provide chemical solutions to diseases and medical ailments....

, and is sometimes considered to be "the founder of pneumatic chemistry
Pneumatic chemistry
Pneumatic chemistry is a term most-closely identified with an area of scientific research of the seventeenth, eighteenth, and early nineteenth centuries. Important goals of this work were an understanding of the physical properties of gases and how they relate to chemical reactions and,...

". Van Helmont is remembered today largely for his ideas on spontaneous generation, his 5-year tree experiment, and his introduction of the word "gas" (from the Greek word chaos) into the vocabulary of scientists.
Van Helmont was the youngest of five children of Maria (van) Stassaert and Christiaen van Helmont, a public prosecutor and Brussels council member, who had married in the Sint-Goedele
St. Michael and Gudula Cathedral
The St. Michael and St. Gudula Cathedral is a Roman Catholic church at the Treurenberg hill in Brussels, Belgium. In French, it is called Cathédrale Saints-Michel-et-Gudule and in Dutch Sint-Michiels- en Sint-Goedelekathedraal, usually shortened to "Sint-Goedele".In 1047, Lambert II, Count of...

 church in 1567.
 
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