Jane Marcet

Jane Marcet

Jane Marcet was a science writer, but that alone doesn’t qualify her as a famous scientist.

In fact, Jane Marcet was the first female science writer ever, writing Conversations on Chemistry in 1806.

Yet that still does not qualify her as a famous scientist, even though she wrote her book for girls in a time when education for girls in Great Britain was viewed as unimportant.

No, the reason she is famous is that she wrote her chemistry book in a way that anyone with little formal education could understand, and it became the standard text in chemistry education.


In Jane Marcet’s time, science was a field inhabited by wealthy people. It was very difficult for poorer people to get enough education to become scientists.

But one poor boy, born in 1791, whose father had worked as a blacksmith, did it.

The boy started work as an apprentice bookbinder aged 13, and went on to become one of the world’s greatest scientists, revolutionizing both physics and chemistry.

That boy was Michael Faraday. Here’s what he wrote about Jane Marcet:

Michael Faraday“Mrs Marcet was a good friend to me, as she must have been to many of the human race. I entered the shop of a bookseller and bookbinder at the age of 13, in the year 1804, remained there 8 years, and during the chief part of the time bound books.

Now it was in these books, in the hours after work, that I found the beginnings of my philosophy. There were two that especially helped me; the Encyclopedia Britannica, from which I gained my first notions of Electricity and Mrs. Marcet’s Conversations on Chemistry, which gave me my foundation in that science.

… I was a very lively, imaginative person, and could believe in the Arabian Nights as easily as the Encyclopedia. But facts were important to me and saved me… so when I questioned Mrs. Marcet’s book by such little experiments as I could find means to perform, and found it true to the facts as I could understand them, I felt that I had got hold of an anchor in chemical knowledge and clung fast to it.

Hence my deep veneration for Mrs. Marcet… as one able to convey the truths and principles of those boundless fields of knowledge which concern natural things to the young, untaught, and inquiring mind.”

Michael Faraday, 1791 – 1867
Chemist and Physicist

Jane Marcet’s book Conversations on Chemistry was so good, many schools in Great Britain started using it.

It made its way to the United States, where Thomas Jefferson’s papers show that he bought a copy of it in 1809.

It became a standard textbook for girls’ education in America and was translated into both French and German.

Amazingly, Jane Marcet was not a chemist and had received no formal training in chemistry. So, how did she come to write such an influential book?

The Making of Jane Marcet

Jane Marcet (pronounced marset, not market) was born in London on the very first day of the year 1769. She was the daughter of the wealthy Swiss banker Anthony Francis Haldiman and his wife Jane. She was home-schooled. In 1799, she married Alexander Marcet, a Swiss medical doctor. The couple lived in London. Alexander, who was interested in chemistry, became a Fellow of the Royal Society and had a home-laboratory built.

Increasingly, Jane became as interested in chemistry as her husband. She began attending lectures at the Royal Institution given by eminent chemists such as Humphry Davy. She found these lectures confusing. Why? she wondered.

Discussing the lectures with other attendees, she realized she was not alone in her confusion. She performed experiments at home and was able share her thoughts with her husband, who had been formally educated in chemistry, and understood her difficulties.

Mrs Marcet decided to learn enough to write about chemistry in such a way that everyone who wanted to understand the subject could understand it.

In 1806, aged 37, she published Conversations on Chemistry, Intended More Especially for the Female Sex. The book was anonymous until 1837, when her name finally appeared as its author. It was always clear that the book had been written by a woman, because at its front it had always featured these words penned by Jane Marcet:

Jane Marcet“In venturing to offer to the public, and more particularly to the female sex, an Introduction to Chemistry, the author, herself a woman, conceives that some explanation may be required: and she feels it the more necessary to apologize for the present undertaking, as her knowledge of the subject is but recent, and as she can have no real claims to the title of chemist.”

Jane Marcet, in 1806

She wrote the book to help other people who were confused by chemistry.

Jane Marcet's Illustration

An Illustration by Jane Marcet: Apparatus to React Metals with Oxygen Gas. (Click image to enlarge it.)

Her explanations were easier to understand than other textbooks, but they were still scientifically accurate for the time they were written.

The book was user-friendly and treated its subject thoroughly in two volumes, each with more than 300 pages.

It featured conversations between an adult who understood chemistry – Mrs. B, and two children who made comments and asked questions – Caroline and Emily.

Jane Marcet also added her own drawings to help make her explanations even clearer, again helping people understand chemistry better.

Here’s a sampling of a conversation from the book, in slightly modernized English:


Are all the metals equally reactive with oxygen?


No; their reactivities vary greatly. Some metals react with oxygen only at a very high temperature, or with the help of acids; while others react spontaneously and with great speed, even at the lowest temperatures. For example manganese hardly ever exists as the pure metal, because it immediately absorbs oxygen when it’s exposed to air. After a few hours, it forms manganese oxide and becomes powdery.


Weren’t you able to extract oxygen gas from manganese oxide?


Yes, because manganese combines with oxygen easily at low temperatures, but releases it when strongly heated.


Do any other metals combine with oxygen at room temperature?


Yes, they all do, more or less, except for gold, silver and platinum. Copper, lead and iron react slowly with oxygen in air and cover themselves with a sort of rust, as the surface of the metal turns into a metal oxide. This rusty surface prevents the interior metal from oxidizing, as it prevents the air from coming into contact with it.

In all, the book was published in 16 editions spanning 1806 and 1853. Mrs Marcet was 84 years old when she released her final edition of the book.

By 1833, events had come spectacularly full-circle. Michael Faraday’s work was featured in that year’s edition of Conversations on Chemistry. The boy who had been inspired by the book now had his work featured in the book.

And now Michael Faraday had met Jane Marcet. He wrote of her:

Michael Faraday“When I came to know Mrs. Marcet personally; how often I cast my thoughts backward, delighting to connect the past and the present; how often, when sending a paper to her as a thank you offering, I thought of my first instructress.”

Michael Faraday, 1791 – 1867
Chemist and Physicist

Ultimately, the influence of Jane Marcet on science was enormous. She made it a subject that girls could consider pursuing, and she made it a subject that people who were not wealthy and who had only a few years of schooling could get to grips with. In doing so, she inspired one of the greatest scientists in history and enabled him to learn enough about chemistry to start a scientific career.

Mary Somerville, after whom The University of Oxford’s first female college was named, said of Jane Marcet:

Mary Somerville“No one at this time can duly estimate the importance of Mrs Marcet’s scientific works.”

Mary Somerville, 1790 – 1872

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