On this day, 150 years ago, on February 22, 1875 (January 17, 1875 in the lunar calendar), Ryle, a British geologist and father of modern geology, passed away. Ryle, an outstanding British geologist and father of modern geology, died on February 22, 1875 at the age of 78. Ryle (1797~1875) was a British geologist. He has traveled extensively in continental Europe and the United Kingdom and has an in-depth study of geology. Member of the Royal Society in 1826. From 1831 to 1833, he served as Professor of Geology at the Royal College. From 1830 to 1833, three volumes of "Principles of Geology" were published. Darwin first met Ryle in 1836 and became a known friend. His greatest contribution was to insist and prove that all features of the earth's surface are formed by invisible and long-term natural processes. He also proved that rocks in the earth's crust recorded hundreds of millions of years of history and could be explained objectively. These achievements laid the foundation for biological evolution and understanding the earth. His representative works are "Principles of Geology" and "Fundamentals of Geology". Darwin's "On the Origin of Species" published in 1859 quoted extensively from the Principles of Geology. In 1863, Ryle published "Geological Evidence of Ancient Humanity", which listed scientific facts favorable to Darwin's theory. In 1864, he clearly expressed support for Darwin's theory.