The book ""The Causation Of Sex In Man, A New Theory Of Sex Based On Clinical Materials: Together With Chapters On Forecasting Or Predicting The Sex Of The Unborn Child (1917)"" by Ernest Rumley Dawson is a scientific work that proposes a new theory on the causation of sex in humans. The author presents clinical materials to support his arguments and offers chapters on forecasting or predicting the sex of unborn children. The book was originally published in 1917 and provides a historical perspective on the study of sex determination. The author's theory provides insight into the biological factors that influence the development of sex in humans and offers a unique perspective on the topic. This book is recommended for anyone interested in the history of science, biology, and the study of human sexuality.And On The Determination Or Production Of Either Sex At Will.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.