On January 8, 1823, British naturalist, explorer, geographer, anthropologist, and biologist Alfred Russel Wallace was born. He is best known for independently conceiving the theory of evolution through natural selection; his paper on the subject was jointly published with some of Charles Darwin‘s writings in 1858. This prompted Darwin to publish his own ideas in On the Origin of Species [5,6].
Alfred Russel grew up in Kensington Cottage near Usk, Monmouthshire, England (now Wales). At the age of only 14, Wallace probably had to drop out of school due to financial issues and began working for a land-surveying business. Along with his brother, he moved to to the Neath area of Wales and it is widely believed that his interest in natural history started out there. It is assumed that he wanted to be able to identify the plants he saw while surveying and bought several books on the topic and also began collecting several plants. Wallace became a teacher in drafting, surveying, English, and arithmetic at the Collegiate School in Leicester, where he was able to increase his knowledge in natural history. It is believed that he met the amateur naturalist Henry Walter Bates in the school’s library who got Wallace passionate about collecting and studying beetles as well.
In about 1845, Wallace read Robert Chambers‘ anonymously published controversial book Vestiges of the Natural History of Creation and at that time, it is assumed, he was convinced of the reality of evolution. He suggested to Bates that they travel to Brazil in order to collect specimens of insects, birds and further animals, both for their private collections and to sell to collectors and museums in Europe. In Brasil, they soon split up, because they had different views on the expedition and Wallace focused his activities in the middle Amazon and Rio Negro, drafting a map of the river. His work was later published by the Royal Geographical Society, London and became the standard map of the region for several years.[1,2]
In the early 1850s, Wallace wanted to return to Britain, but due to an accident almost his entire notes and collections were destroyed and he received much less than expected. However, Wallace set off for another expedition to the Malay Archipelago and spent almost eight years in the region. Wallace managed to collect about 110,000 insects, 7500 shells, 8050 bird skins, and 410 mammal and reptile specimens, including probably more than 5000 species new to science. While in Sarawak, Borneo, Wallace wrote what was probably the most important paper on evolution prior to the discovery of natural selection. his Sarawak Law paper is believed to have influenced Charles Lyell so much that he started a species notebook in which he began to contemplate the implications of evolutionary change . Further it is then believed that Lyell visited Charles Darwin, who explained his theory of natural selection to Lyell for the first time. Lyell encouraged Darwin to publish his findings quick before another scientist (like Wallace) would do so first and Darwin began to write his influential book on evolution. [1,3]
Interestingly, Wallace wrote an essay explaining his ideas on natural selection and asked Darwin to pass it on to Charles Lyell, who was already a highly respected scientist. At that time, Wallace was probably not aware of the fact that Darwin had discovered natural selection previously. It is assumed that Darwin asked Lyell and also Hooker what to do about this delicate situation and they decided to present Wallace’s essay – without asking for his permission – along with two unpublished excerpts from Darwin’s writings to a meeting of the Linnean Society of London in 1858. These events led Darwin to abandon writing his big book and instead publish an ‘abstract of what he had written. This abstract was published in 1859 with the famous title ‘On the Origin of Species‘. [1,2]
At yovisto academic video search you may be interested in a lecture about Alfred Russel Wallace by the Natural History Museum.
References and Further Reading:
-  Alfred Russel Wallace Website
-  Alfred Russel Wallace Page
-  Wallace at the Natural History Museum, London
-  Charles Lyell and the Principles of Geology, SciHi Blog, November 14, 2012.
-  Charles Darwin and the Natural Selection, SciHi Blog, February 12, 2013.
-  Charles Darwin’s ‘On the Origin of Species’, SciHi Blog, November 24, 2012.
-  Alfred Russel Wallace at Wikidata
-  Timeline for Alfred Russel Wallace, via Wikidata