Sequel: Man rises of Parnassus; critical epochs in the prehistory of man, 1927 Bibliography: p 527-546.

Men of the Old Stone Age: Their Environment, Life and Art by Henry Fairfield Osborn: In this pioneering work of anthropology and paleontology, Henry Fairfield Osborn explores the lives and cultural expressions of prehistoric humans. Through a combination of scientific research and speculative interpretation, Osborn reconstructs the world of ancient humans, examining their habitats, tools, art, and social structures. "Men of the Old Stone Age" sheds light on the origins of human civilization and offers a fascinating glimpse into our ancient past. Key Aspects of the Book "Men of the Old Stone Age: Their Environment, Life and Art": Prehistoric Anthropology: Osborn's research delves into the study of ancient human societies and their interaction with the environment. Archaeological Insights: The book provides valuable archaeological insights into the lifestyles, tools, and artistic expressions of early human populations. Scientific Interpretation: While some aspects of the book are speculative, Osborn's work offers a pioneering effort to understand human history through the lens of paleontology and anthropology. Henry Fairfield Osborn was an American paleontologist and biologist, born in 1857. He played a significant role in the development of modern paleontology and contributed to the understanding of vertebrate evolution. Osborn served as the president of the American Museum of Natural History and the New York Zoological Society, leaving a lasting impact on the fields of natural history and anthropology. His dedication to scientific research and exploration helped shape our understanding of human and animal history.

This volume is part of the definitive edition of letters written by and to Charles Darwin, the most celebrated naturalist of the nineteenth century. Notes and appendixes put these fascinating and wide-ranging letters in context, making the letters accessible to both scholars and general readers. Darwin depended on correspondence to collect data from all over the world, and to discuss his emerging ideas with scientific colleagues, many of whom he never met in person. The letters are published chronologically: Volume 21 includes letters from 1873, the year in which Darwin received responses to his work on human and animal expression. Also in this year, Darwin continued his work on carnivorous plants and plant movement, finding unexpected similarities between the plant and animal kingdoms, raised a subscription for his friend Thomas Henry Huxley, and decided to employ a scientific secretary for the first time - his son Francis.