On Orthogenesis And The Impotence Of Natural Selection In Species-Formation is a scientific book written by Theodor Eimer and published in 1897. The book discusses the theory of orthogenesis, which proposes that evolution proceeds in a predetermined direction, rather than being influenced by natural selection. Eimer argues that natural selection is not the sole driving force behind the formation of new species and that other factors, such as internal genetic and developmental processes, play a significant role. The book presents a detailed analysis of various examples of orthogenesis in different species, including the evolution of the horse and the development of the human brain. The author also critiques the concept of natural selection and argues that it is not sufficient to explain the complexity and diversity of life on Earth. Overall, On Orthogenesis And The Impotence Of Natural Selection In Species-Formation is a thought-provoking and influential work that challenges traditional views of evolution and species formation.An Address Delivered At The Leyden Congress Of Zoologists, September 19, 1895.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.