On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection

Exploring the foundations of evolutionary theory, this work presents Alfred Russel Wallace's groundbreaking ideas on natural selection, originally published in 1858. Wallace, inspired by the naturalists of his time, embarked on an expedition in the Amazon rainforest, where he meticulously documented the region's diverse ecosystems and cultures. His observations led to the formulation of his revolutionary theory, which he famously shared with Charles Darwin. This article highlights Wallace's significant role in shaping natural sciences and his lasting legacy in evolutionary thought.