Biography of Famous Biologists Alfred R. Wallace

Alfred Russel Wallace: Co-founder of the Theory of Evolution by Natural Selection

Early Life and Education:
Alfred Russel Wallace was born on January 8, 1823, in the village of Llanbadoc, Monmouthshire, Wales. He was the eighth of nine children in a middle-class family. Unfortunately, financial difficulties led to the family moving to Hertford, England, when Wallace was quite young. Despite facing limited formal education, Wallace developed a keen interest in nature and the natural sciences.

In his teenage years, Wallace worked as an apprentice land surveyor with his older brother. However, due to economic challenges faced by his family, Wallace had to curtail his formal education. Nevertheless, he continued to educate himself through reading and self-study.

Exploration and Early Career:
Wallace’s interest in natural history led him to explore the countryside around Hertford. In 1848, he took a job as a teacher at Leicester Collegiate School, where he met Henry Walter Bates, another naturalist with whom he would later embark on significant scientific expeditions.

In 1848, Wallace set sail for South America, where he spent several years exploring the Amazon rainforest. He collected specimens of insects, birds, and mammals, making numerous observations about the diversity of life in the region. During this time, Wallace formulated the idea of natural selection independently of Charles Darwin, a concept that would later become foundational in the theory of evolution.

Evolution by Natural Selection:
In 1852, Wallace embarked on another expedition, this time to the Malay Archipelago (now Indonesia), where he spent eight years collecting and studying the flora and fauna. It was during this expedition that he formulated his theory of evolution by natural selection. In 1858, while recovering from an illness, Wallace sent a paper outlining his theory to Charles Darwin.

The reception of Wallace’s paper prompted Darwin to publish his own work on the theory of evolution, and both men’s writings were presented jointly to the Linnean Society in 1858. Wallace’s contribution to the theory of evolution was significant, as he independently arrived at the same conclusions as Darwin, providing additional support for the concept of natural selection.

Later Life and Contributions:
Upon returning to England in 1862, Wallace continued his scientific work, writing extensively on topics ranging from natural selection to biogeography. He also became known for his advocacy of social and land reform.

Wallace’s notable publications include “The Malay Archipelago” (1869) and “The Geographical Distribution of Animals” (1876). In the latter, he explored the field of biogeography and made important contributions to the understanding of how geographical barriers shape the distribution of species.

In recognition of his contributions to science, Wallace received numerous awards and honors, including the Darwin-Wallace Medal, which was established in 1908 to commemorate the 50th anniversary of the presentation of the theory of evolution by natural selection. Wallace passed away on November 7, 1913, in Broadstone, England.

Alfred Russel Wallace’s legacy lies not only in his co-discovery of the theory of evolution but also in his extensive contributions to the fields of biogeography, anthropology, and social reform. His work continues to be celebrated for its impact on the understanding of the natural world.