Bibliography.

The article presents a list of articles related to science including "Occurrence of Life in the Universe," by Su-Shu Huang, "Space Perception of Tortoises," by R. M. Yerkes, "Visually Controlled Locomotion and Visual Orientation in Animals," by James J. Gibson, "Geometrical Spiders," by R. W. G. Hingston and "The Delayed Type of Allergic Inflammatory Response," by H. Sherwood Lawrence.