This book is a collection of papers and discussions presented at the meetings of the South African Philosophical Society during the late 19th and early 20th centuries. The topics covered in these essays range from the natural sciences and mathematics to the humanities and social sciences, reflecting the diverse intellectual interests and concerns of the society's members. Through its rigorous and stimulating debates, the society played a crucial role in fostering the growth of intellectual culture and scientific inquiry in South Africa during a time of immense social and political change. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.