There are four parts in this book, Part The question of all questions, Part Artists of the Ice Age, Part The Dawn of Humanity, Part Betzeen animal and man.
Although some parts of the book are outdated by new discoveries, it's still an interesting read. I specially liked the part about the European "stone age" discoveries and what scientist in those day thought of it. How some of them were on the right track and others, mainly due to religious convictions, kept their eyes closed.