Everything about Jan Baptist Van Helmont totally explained
Jan Baptista van Helmont (
January 12,
1580 –
December 30,
1644) was a
early modern period Belgian chemist,
physiologist, and
physician. He worked during the years just after
Paracelsus and iatrochemistry, and is sometimes considered to be "the founder of
pneumatic chemistry". van Helmont is remembered today largely for his ideas on spontaneous generation, his 5-year tree experiment, and his introduction of the word "gas" into the vocabulary of scientists.
Life
Born into a noble family, van Helmont was born at
Brussels in
1580. He was educated at
Louvain, and after ranging restlessly from one science to another and finding satisfaction in none, turned to medicine, taking his doctor's degree in 1599. The next few years he traveled through
Switzerland,
Italy,
France, and
England.
Returning to his own country, van Helmont lived at Antwerp at the time of the great plague in 1605, and having contracted a rich marriage settled in 1609 at
Vilvoorde, near Brussels, where he occupied himself with chemical experiments and medical practice until his death on the 30th of December 1644.
Work
van Helmont was a man of contradictions. On the one hand, he was a disciple of
Paracelsus (though he scornfully repudiated his errors as well as those of most other contemporary authorities), a mystic and
alchemist. On the other hand, he was touched with the new learning based on
experiment that was producing men like
William Harvey,
Galileo Galilei and
Francis Bacon.
van Helmont is regarded as the founder of
pneumatic chemistry, as he was the first to understand that there are gases distinct in kind from atmospheric air. The very word "
gas" he claimed as his own invention, and he perceived that his "gas sylvestre" (
carbon dioxide) given off by burning charcoal, was the same as that produced by
fermenting must, which sometimes renders the air of caves unbreathable.
For van Helmont,
air and
water were the two primitive elements. Fire he explicitly denied to be an
element, and earth isn't one because it can be reduced to water.
van Helmont was a careful observer of
nature, and an exact experimenter who realized that
matter can neither be created nor destroyed. He performed an experiment to determine where plants get their mass. He grew a willow tree and measured the amount of soil, the weight of the tree and the water he added. After five years the plant had gained about 170 pounds. Since the amount of soil was basically the same as it had been when he started his experiment, he deduced that the tree's weight gain had come from water. Since it had received nothing but water and the soil weighed practically the same as at the beginning, he argued that the increased weight of wood, bark and roots had been formed from water alone.
At the same time, chemical principles guided him in the choice of medicines -- undue acidity of the digestive juices, for example, was to be corrected by
alkalines and vice versa; he was thus a forerunner of the
iatrochemical school, and did service to medicine by applying chemical methods to the preparation of drugs.
Religious and philosophical opinions
Although a faithful Catholic, he incurred the suspicion of the Church by his tract
De magnetica vulnerum curatione (1621), which was thought to derogate from some of the miracles. His works were collected and published in Amsterdam as
Ortus medicinae, vel opera et opuscula omnia in 1648 by his son
Franz Mercurius van Helmont, in whose own writings (for example
Cabbaiah Denudata (1677) and
Opuscula philosophica (1690)) mystical theosophy and alchemy appear in confusion.
Over and above the
archeus, he believed that there's the sensitive soul which is the husk or shell of the immortal mind. Before
the Fall the archeus obeyed the immortal mind and was directly controlled by it, but at the Fall men also received the sensitive soul and with it lost immortality, for when it perishes the immortal mind can no longer remain in the body.
In addition to the
archeus, which he described as "aura vitalis seminum, vitae directrix", van Helmont believed in other governing agencies resembling the archeus which were not always clearly distinguished from it. From these he invented the term
blas, defined as the "vis motus tam alterivi quam localis." Of
blas there were several kinds, for example blas humanum and blas meteoron; the heavens he said "constare gas materiâ et blas efficiente."
van Helmont and digestion
van Helmont wrote extensively on the subject of digestion. In
Oriatrike or Physics Refined (1662, English translation of
Ortus medicinae ...), van Helmont addressed earlier ideas on the subject, such as that food was digested due to the body's internal heat. If such was the case, van Helmont argued, how could cold-blooded animals live? His own opinion was that digestion was aided by a chemical reagent, or "ferment", within the body, such as inside the stomach. Harré suggests that in this way, van Helmont's idea was "very near to our modern concept of an enzyme." van Helmont proposed and described six different stages of digestion.
Portrait discovered
In 2003, the historian
Lisa Jardine claimed a recently discovered portrait represented
Robert Hooke. However, Jardine's hypothesis was disproved by William Jensen of the
University of Cincinnati and by the German researcher Andreas Pechtl of
Johannes Gutenberg University of Mainz. The portrait in fact depicts Jan Baptista van Helmont.
For further reading
- Redgrove, I. M. L. and Redgrove, H. Stanley (2003). Joannes Baptista van Helmont: Alchemist, Physician and Philosopher, Kessinger Publishing.
- Pagel, Walter (2002). Joan Baptista van Helmont: Reformer of Science and Medicine, Cambridge University Press.
- The Moldavian prince and scholar, Dimitrie Cantemir, wrote a biography of Helmont, which is now difficult to locate.
- Nature 433, 197 (20 January 2005)doi:10.1038/433197a; Published online 19 January 2005
Notes and references
Steffen Ducheyne, Joan Baptiste van Helmont and the Question of Experimental Modernism, Physis: Rivista Internazionale di Storia della Scienza, vol.43, 2005, pp. 305-332.
Further Information
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