Jane Marcet née Haldimand (1769-1858) was a writer of introductory science books. In 1799 she married Alexander Marcet, a Swiss exile and physician, she settled in London where, through her husband, she had contact with many leading scientists. After helping to proof-read one of her husband's books, she decided to write her own, and produced expository books on chemistry, botany, religion and economics under the general title Conversations. The first of these was eventually published as Conversations on Natural Philosophy in 1819. Her Conversations on Chemistry was published anonymously in 1805, and became her most popular and famous work.