One of the greatest researchers of the nineteenth century was the English naturalist Charles Robert Darwin, who lived between 1809 and 1882. at age 22 was invited to participate in a trip around the world to perform cartographic surveys, which lasted five years. During this trip collected valuable data and demonstrated two qualities that distinguished him: his powers of observation and ability to conserve natural materials. Years later, he expressed his ideas on the mutability of plants and animals and began to expound his theory in a book: The Origin of Species by Means of Natural Selection. In it, Darwin states that plants and animals derived from more primitive forms, and are exposed to a constant transformation to adapt to the environment and to survive as species. His theory of evolution revolutionized not only the natural sciences, but all contemporary thought.
Among the many and varied activities, hunted animals of different species, which were dissected and embalmed by himself, retained dead insects, plants and marine shells, and collected the remains of rock formations.