1813 in science

The year 1813 in science and technology involved some significant events, listed below.
Biology

April – William Charles Wells reads a paper to the Royal Society of London making the first clear statement about natural selection.
Charles Waterton begins the process of turning his estate at Walton Hall, West Yorkshire, England, into what is, in effect, the world's first nature reserve.

Chemistry

Mathieu Orfila publishes his groundbreaking Traité des poisons, formalizing the field of toxicology.
Louis Jacques Thénard commences publication of his textbook Traité de chimie élémentaire, théorique et pratique in Paris.
Edward Howard invents the enclosed vacuum pan for refining sugar.

Exploration

May 11 – Gregory Blaxland, William Lawson and William Wentworth leave on an expedition to cross the Blue Mountains (New South Wales).

Mathematics...