Public Figure Profiles

Émile Duclaux

Émile Duclaux (24 June 1840 – May 2, 1904) was a French microbiologist and chemist born in Aurillac, Cantal.

He studied at the College of Aurillac, the Lycée Saint-Louis in Paris and at École Normale Supérieure. In 1862 he began work as an assistant in the laboratory of Louis Pasteur (1822–1895). During his career, he taught classes in Tours (1865), Clermont-Ferrand (1866), Lyon (from 1873) and Paris (from 1878). In Paris, he was a professor of meteorology at the Institute of Agronomy. For much of his career he was associated with the work of Louis Pasteur.

In 1888 he was elected to the Académie des sciences, and in 1894 became a member of the Académie Nationale de Médecine.

Duclaux's work was largely in the fields of chemistry, bacteriology, hygiene and agriculture. Duclaux initiated the custom of naming enzymes by adding the suffix "-ase" to the enzyme's substrate. His intention was to honor the first scientists (namely Anselme Payen, 1795–1871; and Jean-François Persoz, 1805–1868) to isolate an enzyme; "diastase", in 1833. With Pasteur, he collaborated in the study of silkworm diseases, and also took part in experiments to debunk the theory of spontaneous generation. In the 1870s, he undertook studies of phylloxera, an aphid-like pest that plagued grape vineyards. In addition, he performed research on the composition of milk, and conducted studies on beer and wine.

In 1887 he began publication of the Annales de l'Institut Pasteur, with Charles Chamberland (1851-1908), Jacques-Joseph Grancher (1843–1907), Edmond Nocard (1850–1903) and Pierre Paul Émile Roux (1853–1933) as members of the first editorial board. Following Pasteur's death in 1895, Duclaux became director of the Institute, with Roux and Chamberland serving as its sub-directors.

Duclaux was a prolific writer, some of his better known publications were Traité de microbiologie, L'hygiène sociale, Ferments et maladies and Pasteur, histoire d'un esprit, the latter being a biography dedicated to Pasteur.

Being actively involved in French politics, he was a vocal supporter of Alfred Dreyfus (1859-1935), when the latter was unjustly accused of treason. Duclaux's second wife, Agnes Mary Frances Duclaux (maiden name Agnes Mary Frances Robinson 1857–1944), was a well-known author, and his son, Jacques Eugène Duclaux (1877–1978), was a highly regarded chemist.

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Some of their strengths

Émile Duclaux has many admirable traits.

Based on spiritual traditions from around the world, they are someone who can be described as Intuitive, Energetic, Generous, Courageous, Caring, Passionate, and Adventurous.

Intuitive and Imaginative

According to Mysticism’s Astrology tradition, Émile Duclaux is someone who is a highly intuitive, creative and imaginative person who is very loyal, caring and compassionate to others. A person who sees life as a journey not a destination.

Strong and Resilient

Based on Daoism’s Ba-Zi or ‘Chinese Zodiac’ tradition, people who know Émile Duclaux well know them as someone who can be strong, expansive, and stable like a big tree.

Ambitious and Forceful

According to Hinduism’s Jyotisha or ‘Vedic Astrology’ tradition, many would also describe Émile Duclaux as someone who is ambitious, hard-working, determined, and intelligent.

A person who has a knack for identifying opportunities, has amazing concentration and focus, who can work independently, who likes starting new things, and who is somewhat of an intellectual.

Realistic and Skillful

Based on the Mayan Tzolk’in or ‘Mayan Astrology’ tradition, Émile Duclaux is someone who is able to separate emotions from reality, see the world in terms of right or wrong, and who is very good at getting things done.

They are also someone who is altruistic, tolerant, and sophisticated, and who tends to be a perfectionist who is always working to try and make everything and everyone better.

Traditional and Patient

According to Judaism’s Kabbalah tradition, Émile Duclaux tends to be someone who is a patient person that is very emotional, has a very sharp memory, has an ability to understand people, and who tends to be traditional and frugal.

Some of Émile Duclaux's challenges

While Émile Duclaux has many strengths, nobody is perfect. They also have some challenging traits they need to manage.

For example, Émile Duclaux can be Emotional, Standoffish, Short-tempered, Impulsive, Complicated, Brusque, and Relentless.

Emotional and Standoffish

One of Émile Duclaux's key challenges is that they are someone who can be emotional and standoffish.

Relentless and Inflexible

Émile Duclaux is someone who can be relentless, obsessive, and inflexible, who can be confrontational with work colleagues, can have difficulty communicating feelings and be somewhat reclusive, and who can be self-destructive, overindulgent, and extravagant.

Sensitive and Money-oriented

Finally, Émile Duclaux also can have mood swings, be overly sensititive, and be a bit rigid and materialistic.

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