The Intelligent Eye with 3-D Stereo Illustrations. Contents follow: Foreword, Directions for viewing the 3-D pictures and performing the experiments in this book, Objects and pictures, The peculiarity of pictures, Ambiguous, paradoxical and uncertain figures, Distorting figures, Scaling the universe, Drawing in two-dimensional space, Drawing in three-dimensional space, Pictures, symbols, thought and language, Seeing how things work, Appendix A: Stereoscopic projection and drawing in 3-D, Appendix B: An instrument for improving disturbed images, Notes, Bibliography, and Index.